WO2012124300A1

WO2012124300A1 - Video image encoding method, video image decoding method, video image encoding device, and video image decoding device

Info

Publication number: WO2012124300A1
Application number: PCT/JP2012/001617
Authority: WO
Inventors: チョンスンリム; 西　孝啓; 寿郎笹井
Original assignee: パナソニック株式会社
Priority date: 2011-03-11
Filing date: 2012-03-09
Publication date: 2012-09-20

Abstract

A video image encoding method that encodes a plurality of views using the multi-view video coding standard and the MPEG-2 video coding standard, and comprises: a step (400) in which timing information having hour, minute, and second units is derived; a step (402) in which the timing information is written to a GOP header in a base view MPEG-2 compressed video stream, as a time_code parameter; a step (404) in which a position for a first intrapicture is specified; a step (406) in which the value for a temporal reference parameter for the first intrapicture is derived; a step (408) in which the derived timing information is written to a picture timing SEI message; a step (410) in which the derived temporal reference parameter value is written to the picture timing SEI message as an n_frame parameter; and a step in which the picture timing SEI message is written to a dependent view compressed video stream.

Description

Moving picture coding method, moving picture decoding method, moving picture coding apparatus, and moving picture decoding apparatus

The present invention relates to a moving image encoding method, a moving image decoding method, a moving image encoding device, and a moving image decoding device.

The MPEG-4 multi-view video coding (MVC) standard was established as an extension of the ISO / IEC 14496-10 advanced video coding (AVC) standard. The profile of the MVC standard is designed to be backward compatible with a part of the profile defined by the AVC standard. That is, a decoder or player conforming to the MVC profile can decode a part of the AVC profile bitstream. Conversely, a conventional decoder in an AVC profile (especially a high profile) can decode at least one view of the bitstream that conforms to the MVC profile.

There is a problem that a base-view picture encoded in the MPEG-2 video format and a dependent-view picture encoded in the MPEG-4 MVC format cannot coexist in a single stream.

The problem to be solved by the present invention is to synchronize timing related information between a base-view picture encoded in the MPEG-2 video format and a dependent-view picture encoded in the MPEG-4 MVC video format. Is to introduce a new method. It is also to introduce a new method for detecting errors in these timing related information and executing an error concealment process when these errors occur.

A moving image encoding method according to an aspect of the present invention is a moving image encoding method that encodes a plurality of views according to a multi-view video encoding standard and an MPEG-2 video encoding standard using a synchronization timing parameter. Deriving timing information in units of hours, minutes, and seconds, and using the derived timing information as a time_code parameter in a GOP (group of pictures) header in the MPEG-2 compressed video stream of the base view A step of writing; a step of specifying a position of a first intra picture to be encoded following the header; a step of deriving a value of a temporal reference parameter of the first intra picture; and , Picture timing SEI (complement Additional information), writing to the picture timing SEI message using the derived time reference parameter value as an n_frame parameter, an encoded sequence parameter set and the encoded sequence parameter set Writing the picture timing SEI message to the compressed video stream of the dependent view that is between the first encoded picture located after

Further, it may be realized as a moving picture decoding method corresponding to the above moving picture encoding method.

These general or specific aspects may be realized by a system, a method, an integrated circuit, a computer program, or a recording medium, and are realized by any combination of the system, method, integrated circuit, computer program, and recording medium. May be.

The effect of the present invention is to solve the problem of synchronization between a base view encoded with MPEG-2 and a dependent view encoded with MPEG-4 MVC, and to enable inter-view prediction, The encoding efficiency is improved. The effect of the present invention is that subjective quality is improved by concealing an error when an error is detected.

FIG. 1 is a diagram showing an example of a three-dimensional (3D) system using MPEG-2 as a base view and MPEG-4 AVC as a dependent view. FIG. 2 is an explanatory diagram of parameters in the MPEG-2 header and parameters of the MPEG-4 MVC picture timing SEI. FIG. 3 is an explanatory diagram of an MPEG-2 time_code parameter and an MPEG-4 MVC timing information parameter. FIG. 4 is a flowchart of the encoding process according to Embodiment 1 of the present invention. FIG. 5 is a flowchart of the decoding process according to Embodiment 1 of the present invention. FIG. 6 is a flowchart of the second encoding process according to Embodiment 1 of the present invention. FIG. 7 is an explanatory diagram of a picture header of an MPEG-2 encoded picture and a sequence parameter set of an MPEG-4 MVC decoded picture. FIG. 8 is a flowchart of the encoding process according to Embodiment 2 of the present invention. FIG. 9 is a flowchart of the first decoding process according to Embodiment 2 of the present invention. FIG. 10 is a flowchart of the second decoding process in the second embodiment of the present invention. FIG. 11 is an explanatory diagram of parameters in the picture encoding extension header of the encoded MPEG-2 video and parameters in the picture timing SEI of the MPEG-4 MVC encoded video. FIG. 12 is a flowchart of the encoding process according to Embodiment 3 of the present invention. FIG. 13 is a flowchart of the decoding process according to Embodiment 3 of the present invention. FIG. 14 is a flowchart of an encoding process according to Embodiment 4 of the present invention. FIG. 15 is a flowchart of a decoding process according to Embodiment 4 of the present invention. FIG. 16 is an explanatory diagram of parameters in the sequence header of the encoded MPEG-2 video and parameters in the sequence parameter set of the MPEG-4 MVC encoded video. FIG. 17 is a flowchart of the encoding process according to Embodiment 5 of the present invention. FIG. 18 is a flowchart of the decoding process according to Embodiment 5 of the present invention. FIG. 19 is a configuration diagram of an example of a video encoding device according to an aspect of the present invention. FIG. 20 is a configuration diagram of an example of a video decoding device according to an aspect of the present invention. FIG. 21 is an overall configuration diagram of a content supply system that realizes a content distribution service. FIG. 22 is an overall configuration diagram of a digital broadcasting system. FIG. 23 is a block diagram illustrating a configuration example of a television. FIG. 24 is a block diagram illustrating a configuration example of an information reproducing / recording unit that reads and writes information from and on a recording medium that is an optical disk. FIG. 25 is a diagram illustrating a structure example of a recording medium that is an optical disk. FIG. 26A illustrates an example of a mobile phone. FIG. 26B is a block diagram illustrating a configuration example of a mobile phone. FIG. 27 is a diagram showing a structure of multiplexed data. FIG. 28 is a diagram schematically showing how each stream is multiplexed in the multiplexed data. FIG. 29 is a diagram showing in more detail how the video stream is stored in the PES packet sequence. FIG. 30 is a diagram illustrating the structure of TS packets and source packets in multiplexed data. FIG. 31 is a diagram illustrating a data structure of the PMT. FIG. 32 shows the internal structure of multiplexed data information. FIG. 33 shows the internal structure of stream attribute information. FIG. 34 is a diagram showing steps for identifying video data. FIG. 35 is a block diagram illustrating a configuration example of an integrated circuit that realizes the moving picture coding method and the moving picture decoding method according to each embodiment. FIG. 36 is a diagram showing a configuration for switching the driving frequency. FIG. 37 is a diagram showing steps for identifying video data and switching between driving frequencies. FIG. 38 is a diagram showing an example of a look-up table in which video data standards are associated with drive frequencies. FIG. 39A is a diagram illustrating an example of a configuration for sharing a module of a signal processing unit. FIG. 39B is a diagram illustrating another example of a configuration for sharing a module of a signal processing unit.

(Knowledge that became the basis of the present invention)
The inventor has found the following problems.

Especially for 2D video broadcasting services, the MPEG-2 video standard is still widely used in the market. One possible method of providing a 3D video broadcasting service is to use MPEG-4 MVC in combination with the MPEG-2 video standard so as to be compatible with conventional players. FIG. 1 is an example of such a three-dimensional (3D) system.

FIG. 1 is a diagram showing a three-dimensional (3D) system using MPEG-2 video for base-view (two-dimensional) video and MPEG-4 AVC (or MVC) for dependent-view video. As shown in FIG. 1, even if the base view and the dependent view are encoded with different video standards, the view between the base view and the dependent view is improved in order to improve the encoding efficiency. Inter-prediction is performed. However, since MPEG-4 MVC is not designed in consideration of using MPEG-2 video as a base view, design considerations and so that inter-view prediction can be used by synchronizing the pictures of both views. Change is required.

Since the MPEG-4 MVC standard was not designed to use MPEG-2 video as a base view, base view pictures encoded in the MPEG-2 video format and MPEG-4 MVC format There is a problem that the picture of the dependent view thus made cannot coexist in a single stream. This is because the 3D decoder cannot distinguish between two types of encoded pictures. For this reason, the coded picture of the base view and the coded picture of the dependent view must be included in separate video streams. However, since these pictures are stored in different video streams, in order to perform inter-view prediction from the base view picture to the dependent view picture, the base view picture corresponding to the dependent view picture is selected. Must be identifiable. Because these pictures in different views are related by time, the timing information must be similar between the related base view picture and the dependent view picture.

The problem to be solved by the present invention is to synchronize timing related information between a base-view picture encoded in the MPEG-2 video format and a dependent-view picture encoded in the MPEG-4 MVC video format. Is to introduce a new method. Also, a new method is introduced that detects errors in these timing related information and executes an error concealment process when these errors occur.

A moving picture decoding method according to an aspect of the present invention is a moving picture decoding method for decoding a plurality of views according to a multi-view video coding standard and an MPEG-2 video coding standard using a synchronization timing parameter. A step of analyzing a time_code parameter from a GOP header in an MPEG-2 compressed video stream of a base view, a step of calculating first timing information from the analyzed time_code parameter, and a sequence parameter set of a dependent view Identifying the position of the encoded first picture timing SEI message, deriving second timing information from the hour, minute and second parameters of the picture timing SEI message, and calculating the calculated first Timing information is derived Determining whether the second timing information is the same value as the second timing information, and when the calculated first timing information is the same value as the derived second timing information, the MPEG-2 compression Performing an inter-view prediction process on the dependent-view pictures encoded following the sequence parameter set using the GOP base-view pictures encoded in a video stream. If the calculated first timing information is not the same value as the derived second timing information, another sequence parameter set in the encoded video of the dependent view is searched for another timing Deriving information.

According to these, it is possible to synchronize the timing related parameter related to the picture of the base view encoded in MPEG-2 with the timing related parameter of the picture of the dependent view encoded in MPEG-4 MVC. . This allows the identification of the base view picture associated with the dependent view picture, so inter-view prediction between these pictures can increase the coding efficiency. In addition, the problem of synchronization between the decoded image of the base view and the decoded image that is not the base view in the video layer is solved, and a solution when an error occurs in the synchronization timing related parameter is presented.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Note that each of the embodiments described below shows a preferred specific example of the present invention. The numerical values, shapes, materials, constituent elements, arrangement positions and connecting forms of the constituent elements, steps, order of steps, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. In addition, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims indicating the highest concept of the present invention are described as optional constituent elements that constitute a more preferable embodiment.

In addition, the same code | symbol is attached | subjected to the same component and description may be abbreviate | omitted.

(Embodiment 1)
FIG. 2 shows the positions of the time_code parameter, temporal_reference parameter (temporal reference parameter) and picture_coding_type parameter in the picture header of the MPEG-2 coded picture, and the picture timing SEI (supplementary additional information) of the MPEG-4 MVC coded picture. The positions of various timing information parameters are shown. As shown in FIG. 2, the time_code parameter is located in the GOP (group of pictures) header, and the temporal_reference parameter and the picture_coding_type parameter are located in the picture header of the MPEG-2 coded picture. As further shown in FIG. 2, the n_frame parameter, the seconds_value parameter, the minutes_value parameter, and the hours_value parameter are located in the picture timing SEI message of the MPEG-4 MVC coded picture.

FIG. 3 shows the relationship between the time_code parameter of MPEG-2 encoded video and timing information of MPEG-4 MVC encoded video. As illustrated in FIG. 3, time_code in the GOP header is associated with the first picture displayed following the GOP header. On the other hand, the timing information included in the picture timing SEI is associated with a decoded picture that immediately follows the picture timing SEI, and this picture may not be the first picture displayed following the sequence parameter set.

FIG. 4 is a flowchart of the encoding process according to Embodiment 1 of the present invention. As shown in FIG. 4, first, the module 400 derives timing information in units of hours, minutes, and seconds. Next, the module 402 writes the derived timing information into the GOP header in the base view MPEG-2 compressed video stream. Next, in module 404, the position of the first intra picture in the GOP of the base view following the header of the GOP is specified. Next, in module 406, a temporal_reference parameter of the identified intra picture is derived. Next, module 408 writes the derived base view timing information into the picture timing SEI message as hour, minute and second parameters. Next, in module 410, the temporal_reference parameter value in the derived intra-picture of the base view is written in the picture timing SEI message as an n_frame parameter. Next, in module 412, a picture timing SEI message is written to the encoded video of the dependent view that is between the encoded sequence parameter set and the first encoded picture that follows the encoded sequence parameter set. .

FIG. 5 is a flowchart of the first decoding process in the first embodiment of the present invention. As shown in FIG. 5, first, the module 500 analyzes the time_code parameter from the GOP header in the MPEG-2 compressed video stream of the base view. Next, the module 502 calculates timing information from the analyzed time_code parameter. Next, in module 504, the location of the first picture timing SEI message following the dependent view encoded sequence parameter set is determined. Next, in module 506, dependent view timing information is derived based on the hour, minute, and second parameters in the picture timing SEI message. Next, the module 508 determines whether the calculated timing information is the same as the derived timing information. If the calculated timing information in the module 508 is the same as the derived timing information, the dependent view picture positioned after the sequence parameter set encoded in the module 510 is encoded in MPEG-2. The inter-view prediction process is performed using a group of pictures including the normalized base view picture. On the other hand, when the calculated timing information is different from the derived timing information in module 508, the position of another sequence parameter set in the encoded video of the dependent view is specified in module 512, and another picture timing SEI is determined. The timing information contained in is derived.

FIG. 6 is a flowchart of the second decoding process in the first embodiment of the present invention. As shown in FIG. 6, the module 600 analyzes the first timing information from the GOP header in the base view MPEG-2 compressed video stream. Next, in module 602, the GOP picture is decoded using the MPEG-2 video decoding tool. Next, in module 604, a dependent-view picture that temporally matches the decoded picture of the base view is identified.

Next, in module 606, the position of the first picture timing SEI message following the encoded sequence parameter set of the dependent view is identified. Next, in module 608, second timing information of the dependent view is derived based on the analysis of the hour parameter, the minute parameter, and the second parameter in the picture timing SEI message. Next, the module 610 determines whether or not the first timing information is the same as the second timing information. In module 610, if the first timing information is the same as the second timing information, module 612 decodes the picture of the specified dependent view using the MPEG-4 MVC decoding tool. On the other hand, in the module 610, when the first timing information is different from the second timing information, the decoded picture of the base view is copied as the reconstructed picture of the dependent view.

FIG. 7 shows the positions of the temporal_reference parameter and the picture_coding_type parameter in the picture header of the MPEG-2 coded picture, the position of the frame_mbs_only flag in the sequence parameter set of the MPEG-4 MVC decoded picture, and the picture order count (POC) in the slice header of the slice. ) Position. As shown in FIG. 7, the temporal_reference parameter and the picture_coding_type parameter are in the picture header of the MPEG-2 coded picture. As further shown in FIG. 7, frame_mbs_only_flag is located in the sequence parameter set, and picture order count (POC) is located in the slice header of the MPEG-4 MVC coded picture.

(Embodiment 2)
FIG. 8 is a flowchart of the encoding process according to Embodiment 2 of the present invention. First, in module 800, the position of the first intra picture in the GOP of the base view is specified. Next, the module 802 writes the first temporal_reference parameter in the header of the identified base view intra picture. Next, the module 804 writes the frame_mbs_only_flag parameter in the GOP header (sequence parameter set) of the dependent view. Next, in module 806, the second temporal_reference parameter is written in the header of the picture displayed first in the GOP. The first displayed picture may not be the first intra picture in the same GOP. Next, in module 808, the position of the GOP picture in the dependent view that is temporally related to the first displayed picture in the base view is determined. Next, if the frame_mbs_only_flag parameter is set to a value of 1 at module 810, the POC value is set to the same value as the difference value of the second temporal_reference parameter and the first temporal_reference parameter at module 812. On the other hand, if the frame_mbs_only_flag parameter is not set to a value of 1 in the module 810, the POC value is set to a value twice the difference value between the second temporal_reference parameter and the first temporal_reference parameter in the module 814. Next, in module 816, the POC value is written in the slice header of the picture of the specified dependent view. The identified picture is also the picture displayed first in the GOP of the dependent view.

FIG. 9 is a flowchart of the first decoding process in the second embodiment of the present invention. As shown in FIG. 9, first, in module 900, the position of the first intra picture in the GOP of the base view is specified. Next, in module 902, the first temporal_reference parameter of the header of the identified base view intra picture is analyzed. Next, in the module 904, the frame_mbs_only_flag parameter is analyzed from the GOP header (sequence parameter set) of the dependent view. Next, in module 906, the second temporal_reference parameter of the header of the picture displayed first in the GOP of the base view is analyzed. The first picture to be displayed may or may not be the first intra picture. Next, the module 908 determines whether or not the analyzed frame_mbs_only_flag is 1. If the analyzed frame_mbs_only_flag is 1, then at module 910, the first POC value is set to the same value as the difference value between the second temporal_reference parameter and the first temporal_reference parameter. On the other hand, if the analyzed frame_mbs_only_flag is not 1 in the module 908, the first POC value is set to a value twice the difference value between the second temporal_reference parameter and the first temporal_reference parameter in the module 912.

Next, in module 914, the second POC value is analyzed from the header of the slice belonging to the GOP picture of the dependent view related to the first picture of the base view. Next, in module 916, if the first POC value is the same as the second POC value, module 918 uses the MPEG-4 MVC decoding tool and the reconstructed sample of the first picture of the base view to depend on Decodes the view picture. On the other hand, if the first POC value is different from the second POC value in module 916, another picture in the GOP of the dependent view is searched for in module 920, and the POC value having the same value as the first POC value is searched. Is detected.

FIG. 10 is a flowchart of the second decoding process in Embodiment 2 of the present invention. As shown in FIG. 10, first, in module 1000, the position of the first intra picture in the GOP of the base view is specified. Next, the module 1002 analyzes the first temporal_reference parameter from the header of the identified intra-view of the base view. Next, the module 1004 analyzes the frame_mbs_only_flag parameter from the GOP header (sequence parameter set) of the dependent view. Next, the module 1006 analyzes the second temporal_reference parameter of the header of the picture displayed first in the GOP of the base view. The first picture to be displayed may or may not be the first intra picture. Next, in module 1008, the first picture is decoded using an MPEG-2 video decoding tool. Next, the module 1010 identifies a picture in the dependent view GOP that temporally matches the decoded first picture.

If the analyzed frame_mbs_only_flag is set to 1 in the module 1012, the first POC value is set to the same value as the difference value between the second temporal_reference parameter and the first temporal_reference parameter in the module 1014. If the analyzed frame_mbs_only_flag is not set to 1 in the module 1012, the first POC value is set to a value twice the difference value between the second temporal_reference parameter and the first temporal_reference parameter in the module 1016. Next, in module 1018, the second POC value is analyzed from the header of the slice belonging to the specified picture in the dependent view GOP associated with the first picture of the base view. Next, in module 1020, if the first POC value is the same as the second POC value, then in module 1022, the MPEG-4 MVC decoding tool and the base view first picture reconstruction sample are used. Decodes the view picture. On the other hand, if the first POC value is different from the second POC value in the module 1020, the first picture in the base view is duplicated in the module 1024 as a reconstructed sample of the dependent view picture.

FIG. 11 shows the positions of the picture_structure parameter, the top_field_first parameter, and the repeat_first_field parameter in the picture encoding extension header of the encoded MPEG-2 video, the position of the pict_struct parameter in the picture timing SEI of the MPEG-4 MVC encoded video, and the MPEG -4 is a diagram showing the positions of the field_picture_flag parameter and the bottom_field_flag parameter in the slice header of a slice belonging to an MVC coded picture. As further shown in FIG. 11, the field_picture_flag parameter and the bottom_field_flag parameter of the MPEG-4 MVC video can be mapped from the MPEG-2 picture_structure parameter using a predetermined table. Also, the MPEG-4 MVC pic_struct parameter can be mapped from the picture_structure parameter, top_field_first parameter, and repeat_first_field parameter of the MPEG-2 video using another predetermined table.

(Embodiment 3)
FIG. 12 is a flowchart of the encoding process according to the third embodiment of the present invention. As shown in FIG. 12, first, the module 1200 writes the picture_structure parameter in the picture encoding extension header in the first picture of the base view of the MPEG-2 video format. Next, in module 1202, a dependent-view picture that temporally matches the base-view picture is identified. Next, the module 1204 derives a field_picture_flag parameter and a bottom_field_flag parameter from the picture_structure parameter. Next, in module 1206, the derived field_picture_flag parameter and bottom_field_flag parameter are written in the header of the slice belonging to the specified dependent-view picture.

FIG. 13 is a flowchart of the decoding process according to the third embodiment of the present invention. As shown in FIG. 13, the module 1300 analyzes the picture_structure parameter from the picture encoding extension header of the base-view picture encoded in the MPEG-2 format. Next, in module 1302, a dependent-view picture that temporally matches the base-view picture is identified. Next, in a module 1304, a first field_picture_flag parameter and a first bottom_field_flag parameter are derived from the above-mentioned picture_structure parameter. Next, the module 1306 analyzes the second field_picture_flag parameter and the second bottom_field_flag parameter from the header of the slice belonging to the specified dependent-view picture. Next, at module 1308, if the first field_picture_flag parameter is equal to the second field_picture_flag parameter and the first bottom_field_flag parameter is equal to the second bottom_field_flag parameter, then at module 1310, the MPEG-4 and MPEG-4 The dependent view picture is decoded using the reconstructed sample of the view picture. On the other hand, if in module 1308 the first field_picture_flag parameter is different from the second field_picture_flag parameter, or if the first bottom_field_flag parameter is different from the second bottom_field_flag parameter, then in the picture 1312 in the dent view, Duplicate the base view picture as a configuration sample.

(Embodiment 4)
FIG. 14 is a flowchart of the encoding process according to Embodiment 4 of the present invention. As shown in FIG. 14, first, in the module 1400, the picture_structure parameter, the top_field_first parameter, and the repeat_first_field parameter are written into the picture encoding extension header in the first picture of the base view of the MPEG-2 video format. Next, in module 1402, a dependent-view picture that temporally matches the base-view picture is identified. Next, the module 1404 derives a pic_structure parameter from the picture_structure parameter, the top_field_first parameter, and the repeat_first_field parameter. Next, in module 1406, the derived pictstruct parameter is written to the picture timing SEI message associated with the picture of the identified dependent view.

FIG. 15 is a flowchart of the decoding process according to the fourth embodiment of the present invention. As shown in FIG. 15, first, in the module 1500, the picture_structure parameter, the top_field_first parameter, and the repeat_first_field parameter are analyzed from the picture encoding extension header of the picture of the base view encoded in the MPEG-2 format. Next, in module 1502, a dependent view picture that temporally matches the base view picture is identified. Next, in module 1504, a first pic_struct parameter is derived from the picture_structure parameter, the top_field_first parameter, and the repeat_first_field parameter in the base view picture. Next, in module 1506, a second pict_struct parameter is analyzed from the picture timing SEI message associated with the identified dependent-view picture. Next, in module 1508, if the first pict_struct parameter is the same as the second pict_struct parameter, module 1510 uses the MPEG-4 MVC decoding tool and the base view picture reconstruction sample to determine the dependent view. Decode a picture. On the other hand, if the first pict_struct parameter is different from the second pict_struct parameter in module 1508, then the base view picture is duplicated in module 1512 as a reconstructed sample of the dependent view picture.

FIG. 16 is a diagram showing the position of the frame_rate_code parameter in the sequence header of the encoded MPEG-2 video, and the positions of the num_units_in_tick parameter and the time_scale parameter in the sequence parameter set of the MPEG-4 MVC encoded video. As shown in FIG. 16, the num_units_in_tick parameter and the time_scale parameter of the MPEG-4 MVC encoded video can be mapped from the frame_rate_code parameter of the MPEG-2 encoded video using a predetermined table.

(Embodiment 5)
FIG. 17 is a flowchart of the encoding process in the fifth embodiment of the present invention. As shown in FIG. 17, first, the module 1700 writes frame_rate_code in the sequence header belonging to the GOP of the base view in the MPEG-2 video format. Next, the module 1702 identifies a dependent view GOP that matches the base view GOP. Next, the module 1704 derives the num_units_in_tick parameter and the time_scale parameter from the frame_rate_code parameter. Next, the module 1706 writes the derived num_units_in_tick parameter and time_scale parameter to the VUI parameter of the sequence parameter set belonging to the GOP of the dependent view.

FIG. 18 is a flowchart of the decoding process in the fifth embodiment of the present invention. As shown in FIG. 18, first, in the module 1800, the frame_rate_code parameter is analyzed from the sequence header belonging to the GOP of the base view encoded in the MPEG-2 format. Next, in module 1802, a dependent view GOP that matches the base view GOP is identified. Next, the module 1804 derives the first num_units_in_tick parameter and the first time_scale parameter from the frame_rate_code parameter. Next, the module 1806 analyzes the second num_units_in_tick parameter and the second time_scale parameter from the sequence parameter set belonging to the identified dependent view GOP. Next, in module 1808, if the first num_units_in_tick parameter is equal to the second num_units_in_tick parameter and the first time_scale parameter is equal to the second time_scale parameter, then in module 1810, the MPEG-4 MVC decoding tool and base The dependent view GOP is decoded using the reconstructed sample of the view GOP. On the other hand, if in module 1808 the first num_units_in_tick parameter is different from the second num_units_in_tick parameter, or the first time_scale parameter is different from the second time_scale parameter, then in module 1812 the decoded picture of the dependent view Duplicate the base view picture.

FIG. 19 is a configuration diagram of an example of a video encoding device according to an aspect of the present invention. As shown in FIG. 19, the moving picture coding apparatus A19 includes an MPEG-2 encoder (1900), a first description part (1902), a dependent view parameter calculation part (1904), and a second description part (1906). And MPEG-4 MVC encoder.

First, the MPEG-2 encoder (1900) reads a picture of the base view (D1901), and outputs a compressed picture of the base view in the MPEG-2 format (D1903). The MPEG-2 encoder (1900) outputs a base view reconstructed picture (D1907) for inter-view prediction and a base view parameter set (D1905). The first description unit (1902) reads the parameter set (D1905) of the base view and inserts it into the header (D1917) of the compressed picture of the base view as a parameter.

Next, the dependent view calculation unit (1904) reads the base view parameter set (D1905), and calculates a new dependent view parameter set (D1911). Then, the second description unit (1906) reads the calculated parameter set (D1911), and outputs it as a parameter to the header of the compressed picture of the dependent view in the MPEG-4 MVC format (D1915). Finally, the MPEG-4 MVC encoder (1908) reads the dependent-view picture (D1909), the base-view reconstructed picture (D1907), and the calculated parameter set (D1911), and reads the MPEG-4 MVC format (D1913). ) To output a dependent view compressed picture.

FIG. 20 is a configuration diagram of an example of a video decoding device according to an aspect of the present invention. As shown in FIG. 20, the moving picture decoding apparatus A20 includes an MPEG-2 decoder (2002), a first analysis unit (2000), a dependent view parameter calculation unit (2004), a comparison unit (2006), a second An analysis unit (2008), an MPEG-4 MVC decoder unit (2010), and a switch unit (2012) are provided.

First, the first analysis unit (2000) reads the compressed video (D2001) of the base view encoded in the MPEG-2 format and outputs the parameter set (D2003). The MPEG-2 decoder reads the compressed picture (D2001) of the base view and the analyzed parameter set (D2003), and outputs the decoded picture (D2013) of the base view. The decoded picture of the base view is used as a reference picture for intra picture prediction (D2011). Next, the dependent view parameter calculation unit (2004) reads the analyzed parameter set (D2003) and outputs a new parameter set (D2005). The second analysis unit (2008) reads the compressed picture of the dependent view and outputs a parameter set (D2009). The comparison unit (2006) compares the analyzed parameter set (D2009) with the calculated parameter set (D2005). If the two parameter sets are the same, the comparison unit (2006) controls the switch unit (2012). The MPEG-4 MVC decoder (2010) reads the dependent view compressed picture (D2007), the analyzed parameter set (D2009), and the base view reconstructed picture (D2011), and decodes the dependent view decoded picture (D2011). D2017) is output. Based on the control signal (D2019), the switch unit (D2012) selects either the decoded picture (D2013) of the base view or the decoded picture (D2017) of the dependent view and outputs it as a reconstructed picture of the dependent view To do.

(Embodiment 6)
By recording a program for realizing the configuration of the moving picture encoding method or the moving picture decoding method shown in each of the above embodiments on a storage medium, the computer system in which the processing shown in each of the above embodiments is independent It becomes possible to carry out easily. The storage medium may be any medium that can record a program, such as a magnetic disk, an optical disk, a magneto-optical disk, an IC card, and a semiconductor memory.

Further, application examples of the moving picture encoding method and the moving picture decoding method shown in the above embodiments and a system using the same will be described.

FIG. 21 is a diagram showing an overall configuration of a content supply system ex100 that realizes a content distribution service. A communication service providing area is divided into desired sizes, and base stations ex106, ex107, ex108, ex109, and ex110, which are fixed wireless stations, are installed in each cell.

This content supply system ex100 includes a computer ex111, a PDA (Personal Digital Assistant) ex112, a camera ex113, a mobile phone ex114, a game machine ex115 via the Internet ex101, the Internet service provider ex102, the telephone network ex104, and the base stations ex106 to ex110. Etc. are connected.

However, the content supply system ex100 is not limited to the configuration shown in FIG. 21, and may be connected by combining any of the elements. In addition, each device may be directly connected to the telephone network ex104 without going from the base station ex106, which is a fixed wireless station, to ex110. In addition, the devices may be directly connected to each other via short-range wireless or the like.

The camera ex113 is a device that can shoot moving images such as a digital video camera, and the camera ex116 is a device that can shoot still images and movies such as a digital camera. The mobile phone ex114 is a GSM (registered trademark) (Global System for Mobile Communications) system, a CDMA (Code Division Multiple Access) system, a W-CDMA (Wideband-Code Division Multiple Access) system, or an LTE (Long Term Evolution). It is possible to use any of the above-mentioned systems, HSPA (High Speed Packet Access) mobile phone, PHS (Personal Handyphone System), or the like.

In the content supply system ex100, the camera ex113 and the like are connected to the streaming server ex103 through the base station ex109 and the telephone network ex104, thereby enabling live distribution and the like. In live distribution, the content (for example, music live video) captured by the user using the camera ex113 is encoded as described in the above embodiments, and transmitted to the streaming server ex103. On the other hand, the streaming server ex103 stream-distributes the content data transmitted to the requested client. Examples of the client include a computer ex111, a PDA ex112, a camera ex113, a mobile phone ex114, and a game machine ex115 that can decode the encoded data. Each device that receives the distributed data decodes the received data and reproduces it.

Note that the captured data may be encoded by the camera ex113, the streaming server ex103 that performs data transmission processing, or may be shared with each other. Similarly, the decryption processing of the distributed data may be performed by the client, the streaming server ex103, or may be performed in common with each other. In addition to the camera ex113, still images and / or moving image data captured by the camera ex116 may be transmitted to the streaming server ex103 via the computer ex111. The encoding process in this case may be performed by any of the camera ex116, the computer ex111, and the streaming server ex103, or may be performed in a shared manner.

Further, these encoding / decoding processes are generally performed in the computer ex111 and the LSI ex500 included in each device. The LSI ex500 may be configured as a single chip or a plurality of chips. It should be noted that moving image encoding / decoding software is incorporated into some recording medium (CD-ROM, flexible disk, hard disk, etc.) that can be read by the computer ex111, etc., and encoding / decoding processing is performed using the software. May be. Furthermore, when the mobile phone ex114 is equipped with a camera, moving image data acquired by the camera may be transmitted. The moving image data at this time is data encoded by the LSI ex500 included in the mobile phone ex114.

Further, the streaming server ex103 may be a plurality of servers or a plurality of computers, and may process, record, and distribute data in a distributed manner.

As described above, in the content supply system ex100, the encoded data can be received and reproduced by the client. Thus, in the content supply system ex100, the information transmitted by the user can be received, decrypted and reproduced by the client in real time, and personal broadcasting can be realized even for a user who does not have special rights or facilities.

In addition to the example of the content supply system ex100, as shown in FIG. 22, at least one of the video encoding device and the video decoding device of each of the above embodiments is incorporated in the digital broadcast system ex200. be able to. Specifically, in the broadcast station ex201, multiplexed data obtained by multiplexing music data and the like on video data is transmitted to a communication or satellite ex202 via radio waves. This video data is data encoded by the moving image encoding method described in the above embodiments. Receiving this, the broadcasting satellite ex202 transmits a radio wave for broadcasting, and this radio wave is received by a home antenna ex204 capable of receiving satellite broadcasting. The received multiplexed data is decoded and reproduced by a device such as the television (receiver) ex300 or the set top box (STB) ex217.

Also, a reader / recorder ex218 that reads and decodes multiplexed data recorded on a recording medium ex215 such as a DVD or a BD, or encodes a video signal on the recording medium ex215 and, in some cases, multiplexes and writes it with a music signal. It is possible to mount the moving picture decoding apparatus or moving picture encoding apparatus described in the above embodiments. In this case, the reproduced video signal is displayed on the monitor ex219, and the video signal can be reproduced in another device or system using the recording medium ex215 on which the multiplexed data is recorded. Alternatively, a moving picture decoding apparatus may be mounted in a set-top box ex217 connected to a cable ex203 for cable television or an antenna ex204 for satellite / terrestrial broadcasting and displayed on the monitor ex219 of the television. At this time, the moving picture decoding apparatus may be incorporated in the television instead of the set top box.

FIG. 23 is a diagram illustrating a television (receiver) ex300 that uses the video decoding method and the video encoding method described in each of the above embodiments. The television ex300 obtains or outputs multiplexed data in which audio data is multiplexed with video data via the antenna ex204 or the cable ex203 that receives the broadcast, and demodulates the received multiplexed data. Alternatively, the modulation / demodulation unit ex302 that modulates multiplexed data to be transmitted to the outside, and the demodulated multiplexed data is separated into video data and audio data, or the video data and audio data encoded by the signal processing unit ex306 Is provided with a multiplexing / demultiplexing unit ex303.

Further, the television ex300 decodes the audio data and the video data, or encodes each information, the audio signal processing unit ex304, the signal processing unit ex306 including the video signal processing unit ex305, and the decoded audio signal. A speaker ex307 for outputting, and an output unit ex309 having a display unit ex308 such as a display for displaying the decoded video signal. Furthermore, the television ex300 includes an interface unit ex317 including an operation input unit ex312 that receives an input of a user operation. Furthermore, the television ex300 includes a control unit ex310 that performs overall control of each unit, and a power supply circuit unit ex311 that supplies power to each unit. In addition to the operation input unit ex312, the interface unit ex317 includes a bridge unit ex313 connected to an external device such as a reader / recorder ex218, a recording unit ex216 such as an SD card, and an external recording unit such as a hard disk. A driver ex315 for connecting to a medium, a modem ex316 for connecting to a telephone network, and the like may be included. Note that the recording medium ex216 is capable of electrically recording information by using a nonvolatile / volatile semiconductor memory element to be stored. Each part of the television ex300 is connected to each other via a synchronous bus.

First, a configuration in which the television ex300 decodes and reproduces multiplexed data acquired from the outside by the antenna ex204 and the like will be described. The television ex300 receives a user operation from the remote controller ex220 or the like, and demultiplexes the multiplexed data demodulated by the modulation / demodulation unit ex302 by the multiplexing / demultiplexing unit ex303 based on the control of the control unit ex310 having a CPU or the like. Furthermore, in the television ex300, the separated audio data is decoded by the audio signal processing unit ex304, and the separated video data is decoded by the video signal processing unit ex305 using the decoding method described in each of the above embodiments. The decoded audio signal and video signal are output from the output unit ex309 to the outside. At the time of output, these signals may be temporarily stored in the buffers ex318, ex319, etc. so that the audio signal and the video signal are reproduced in synchronization. Also, the television ex300 may read multiplexed data from recording media ex215 and ex216 such as a magnetic / optical disk and an SD card, not from broadcasting. Next, a configuration in which the television ex300 encodes an audio signal or a video signal and transmits the signal to the outside or to a recording medium will be described. The television ex300 receives a user operation from the remote controller ex220 and the like, encodes an audio signal with the audio signal processing unit ex304, and converts the video signal with the video signal processing unit ex305 based on the control of the control unit ex310. Encoding is performed using the encoding method described in (1). The encoded audio signal and video signal are multiplexed by the multiplexing / demultiplexing unit ex303 and output to the outside. When multiplexing, these signals may be temporarily stored in the buffers ex320, ex321, etc. so that the audio signal and the video signal are synchronized. Note that a plurality of buffers ex318, ex319, ex320, and ex321 may be provided as illustrated, or one or more buffers may be shared. Further, in addition to the illustrated example, data may be stored in the buffer as a buffer material that prevents system overflow and underflow, for example, between the modulation / demodulation unit ex302 and the multiplexing / demultiplexing unit ex303.

In addition to acquiring audio data and video data from broadcasts, recording media, and the like, the television ex300 has a configuration for receiving AV input of a microphone and a camera, and performs encoding processing on the data acquired from them. Also good. Here, the television ex300 has been described as a configuration capable of the above-described encoding processing, multiplexing, and external output, but these processing cannot be performed, and only the above-described reception, decoding processing, and external output are possible. It may be a configuration.

In addition, when reading or writing multiplexed data from a recording medium by the reader / recorder ex218, the decoding process or the encoding process may be performed by either the television ex300 or the reader / recorder ex218, The reader / recorder ex218 may share with each other.

As an example, FIG. 24 shows the configuration of the information reproducing / recording unit ex400 when data is read from or written to the optical disk. The information reproducing / recording unit ex400 includes elements ex401, ex402, ex403, ex404, ex405, ex406, and ex407 described below. The optical head ex401 irradiates a laser spot on the recording surface of the recording medium ex215 that is an optical disk to write information, and detects reflected light from the recording surface of the recording medium ex215 to read the information. The modulation recording unit ex402 electrically drives a semiconductor laser built in the optical head ex401 and modulates the laser beam according to the recording data. The reproduction demodulator ex403 amplifies the reproduction signal obtained by electrically detecting the reflected light from the recording surface by the photodetector built in the optical head ex401, separates and demodulates the signal component recorded on the recording medium ex215, and is necessary To play back information. The buffer ex404 temporarily holds information to be recorded on the recording medium ex215 and information reproduced from the recording medium ex215. The disk motor ex405 rotates the recording medium ex215. The servo controller ex406 moves the optical head ex401 to a predetermined information track while controlling the rotational drive of the disk motor ex405, and performs a laser spot tracking process. The system control unit ex407 controls the entire information reproduction / recording unit ex400. In the reading and writing processes described above, the system control unit ex407 uses various kinds of information held in the buffer ex404, and generates and adds new information as necessary, and the modulation recording unit ex402, the reproduction demodulation unit This is realized by recording / reproducing information through the optical head ex401 while operating the ex403 and the servo control unit ex406 in a coordinated manner. The system control unit ex407 is composed of, for example, a microprocessor, and executes these processes by executing a read / write program.

In the above, the optical head ex401 has been described as irradiating a laser spot. However, a configuration in which higher-density recording is performed using near-field light may be used.

FIG. 25 shows a schematic diagram of a recording medium ex215 that is an optical disk. Guide grooves (grooves) are formed in a spiral shape on the recording surface of the recording medium ex215, and address information indicating the absolute position on the disc is recorded in advance on the information track ex230 by changing the shape of the groove. This address information includes information for specifying the position of the recording block ex231 that is a unit for recording data, and the recording block is specified by reproducing the information track ex230 and reading the address information in a recording or reproducing apparatus. Can do. Further, the recording medium ex215 includes a data recording area ex233, an inner peripheral area ex232, and an outer peripheral area ex234. The area used for recording user data is the data recording area ex233, and the inner circumference area ex232 and the outer circumference area ex234 arranged on the inner or outer circumference of the data recording area ex233 are used for specific purposes other than user data recording. Used. The information reproducing / recording unit ex400 reads / writes encoded audio data, video data, or multiplexed data obtained by multiplexing these data with respect to the data recording area ex233 of the recording medium ex215.

In the above description, an optical disk such as a single-layer DVD or BD has been described as an example. However, the present invention is not limited to these, and an optical disk having a multilayer structure and capable of recording other than the surface may be used. Also, an optical disc with a multi-dimensional recording / reproducing structure, such as recording information using light of different wavelengths in the same place on the disc, or recording different layers of information from various angles. It may be.

Also, in the digital broadcasting system ex200, the car ex210 having the antenna ex205 can receive data from the satellite ex202 and the like, and the moving image can be reproduced on a display device such as the car navigation ex211 that the car ex210 has. The configuration of the car navigation ex211 may be, for example, a configuration in which a GPS receiving unit is added in the configuration illustrated in FIG. 23, and the same may be considered for the computer ex111, the mobile phone ex114, and the like.

FIG. 26A is a diagram showing the mobile phone ex114 using the video decoding method and the video encoding method described in the above embodiment. The mobile phone ex114 includes an antenna ex350 for transmitting and receiving radio waves to and from the base station ex110, a camera unit ex365 capable of capturing video and still images, a video captured by the camera unit ex365, a video received by the antenna ex350, and the like Is provided with a display unit ex358 such as a liquid crystal display for displaying the decrypted data. The mobile phone ex114 further includes a main body unit having an operation key unit ex366, an audio output unit ex357 such as a speaker for outputting audio, an audio input unit ex356 such as a microphone for inputting audio, a captured video, In the memory unit ex367 for storing encoded data or decoded data such as still images, recorded audio, received video, still images, mails, or the like, or an interface unit with a recording medium for storing data A slot ex364 is provided.

Furthermore, a configuration example of the mobile phone ex114 will be described with reference to FIG. 26B. The mobile phone ex114 has a power supply circuit part ex361, an operation input control part ex362, and a video signal processing part ex355 with respect to a main control part ex360 that comprehensively controls each part of the main body including the display part ex358 and the operation key part ex366. , A camera interface unit ex363, an LCD (Liquid Crystal Display) control unit ex359, a modulation / demodulation unit ex352, a multiplexing / demultiplexing unit ex353, an audio signal processing unit ex354, a slot unit ex364, and a memory unit ex367 are connected to each other via a bus ex370. ing.

When the end of call and the power key are turned on by a user operation, the power supply circuit unit ex361 starts up the mobile phone ex114 in an operable state by supplying power from the battery pack to each unit.

The cellular phone ex114 converts the audio signal collected by the audio input unit ex356 in the voice call mode into a digital audio signal by the audio signal processing unit ex354 based on the control of the main control unit ex360 having a CPU, a ROM, a RAM, and the like. Then, this is subjected to spectrum spread processing by the modulation / demodulation unit ex352, digital-analog conversion processing and frequency conversion processing are performed by the transmission / reception unit ex351, and then transmitted via the antenna ex350. The mobile phone ex114 also amplifies the received data received via the antenna ex350 in the voice call mode, performs frequency conversion processing and analog-digital conversion processing, performs spectrum despreading processing by the modulation / demodulation unit ex352, and performs voice signal processing unit After being converted into an analog audio signal by ex354, this is output from the audio output unit ex356.

Further, when an e-mail is transmitted in the data communication mode, the text data of the e-mail input by operating the operation key unit ex366 of the main unit is sent to the main control unit ex360 via the operation input control unit ex362. The main control unit ex360 performs spread spectrum processing on the text data in the modulation / demodulation unit ex352, performs digital analog conversion processing and frequency conversion processing in the transmission / reception unit ex351, and then transmits the text data to the base station ex110 via the antenna ex350. . In the case of receiving an e-mail, almost the reverse process is performed on the received data and output to the display unit ex358.

When transmitting video, still images, or video and audio in the data communication mode, the video signal processing unit ex355 compresses the video signal supplied from the camera unit ex365 by the moving image encoding method described in the above embodiments. The encoded video data is sent to the multiplexing / separating unit ex353. The audio signal processing unit ex354 encodes the audio signal picked up by the audio signal input unit ex356 while the camera unit ex365 images a video, a still image, and the like, and the encoded audio data is sent to the multiplexing / separating unit ex353. Send it out.

The multiplexing / demultiplexing unit ex353 multiplexes the encoded video data supplied from the video signal processing unit ex355 and the encoded audio data supplied from the audio signal processing unit ex354 by a predetermined method, and is obtained as a result. The multiplexed data is subjected to spread spectrum processing by the modulation / demodulation circuit unit ex352, subjected to digital analog conversion processing and frequency conversion processing by the transmission / reception unit ex351, and then transmitted via the antenna ex350.

Decode multiplexed data received via antenna ex350 when receiving video file data linked to a homepage, etc. in data communication mode, or when receiving e-mail with video and / or audio attached Therefore, the multiplexing / separating unit ex353 separates the multiplexed data into a video data bit stream and an audio data bit stream, and performs video signal processing on the video data encoded via the synchronization bus ex370. The encoded audio data is supplied to the audio signal processing unit ex354 while being supplied to the unit ex355. The video signal processing unit ex355 decodes the video signal by decoding using the video decoding method corresponding to the video encoding method described in each of the above embodiments, and the display unit ex358 via the LCD control unit ex359. From, for example, video and still images included in a moving image file linked to a home page are displayed. The audio signal processing unit ex354 decodes the audio signal, and the audio is output from the audio output unit ex357.

In addition to the transmission / reception type terminal having both the encoder and the decoder, the terminal such as the mobile phone ex114 is referred to as a transmission terminal having only an encoder and a receiving terminal having only a decoder. There are three possible mounting formats. Furthermore, in the digital broadcasting system ex200, it has been described that multiplexed data in which music data is multiplexed with video data is received and transmitted. However, in addition to audio data, character data related to video is multiplexed. It may be converted data, or may be video data itself instead of multiplexed data.

As described above, the moving picture encoding method or the moving picture decoding method shown in each of the above embodiments can be used in any of the above-described devices / systems. The described effect can be obtained.

Further, the present invention is not limited to the above-described embodiment, and various changes and modifications can be made without departing from the scope of the present invention.

(Embodiment 7)
The moving picture coding method or apparatus shown in the above embodiments and the moving picture coding method or apparatus compliant with different standards such as MPEG-2, MPEG4-AVC, and VC-1 are appropriately switched as necessary. Thus, it is also possible to generate video data.

Here, when a plurality of pieces of video data conforming to different standards are generated, it is necessary to select a decoding method corresponding to each standard when decoding. However, since it is impossible to identify which standard the video data to be decoded complies with, there arises a problem that an appropriate decoding method cannot be selected.

In order to solve this problem, multiplexed data obtained by multiplexing audio data or the like with video data is configured to include identification information indicating which standard the video data conforms to. A specific configuration of multiplexed data including video data generated by the moving picture encoding method or apparatus shown in the above embodiments will be described below. The multiplexed data is a digital stream in the MPEG-2 transport stream format.

FIG. 27 is a diagram showing a structure of multiplexed data. As shown in FIG. 27, the multiplexed data is obtained by multiplexing one or more of a video stream, an audio stream, a presentation graphics stream (PG), and an interactive graphics stream. The video stream indicates the main video and sub-video of the movie, the audio stream (IG) indicates the main audio portion of the movie and the sub-audio mixed with the main audio, and the presentation graphics stream indicates the subtitles of the movie. Here, the main video indicates a normal video displayed on the screen, and the sub-video is a video displayed on a small screen in the main video. The interactive graphics stream indicates an interactive screen created by arranging GUI components on the screen. The video stream is encoded by the moving image encoding method or apparatus shown in the above embodiments, or the moving image encoding method or apparatus conforming to the conventional standards such as MPEG-2, MPEG4-AVC, and VC-1. ing. The audio stream is encoded by a method such as Dolby AC-3, Dolby Digital Plus, MLP, DTS, DTS-HD, or linear PCM.

Each stream included in the multiplexed data is identified by PID. For example, 0x1011 for video streams used for movie images, 0x1100 to 0x111F for audio streams, 0x1200 to 0x121F for presentation graphics, 0x1400 to 0x141F for interactive graphics streams, 0x1B00 to 0x1B1F are assigned to video streams used for sub-pictures, and 0x1A00 to 0x1A1F are assigned to audio streams used for sub-audio mixed with the main audio.

FIG. 28 is a diagram schematically showing how multiplexed data is multiplexed. First, a video stream ex235 composed of a plurality of video frames and an audio stream ex238 composed of a plurality of audio frames are converted into PES packet sequences ex236 and ex239, respectively, and converted into TS packets ex237 and ex240. Similarly, the data of the presentation graphics stream ex241 and interactive graphics ex244 are converted into PES packet sequences ex242 and ex245, respectively, and further converted into TS packets ex243 and ex246. The multiplexed data ex247 is configured by multiplexing these TS packets into one stream.

FIG. 29 shows in more detail how the video stream is stored in the PES packet sequence. The first row in FIG. 29 shows a video frame sequence of the video stream. The second level shows a PES packet sequence. As shown by arrows yy1, yy2, yy3, yy4 in FIG. 29, a plurality of Video Presentation Units in the video stream are divided into pictures, B pictures, and P pictures, and are stored in the payload of the PES packet. . Each PES packet has a PES header, and a PTS (Presentation Time-Stamp) that is a display time of a picture and a DTS (Decoding Time-Stamp) that is a decoding time of a picture are stored in the PES header.

FIG. 30 shows the format of the TS packet that is finally written in the multiplexed data. The TS packet is a 188-byte fixed-length packet composed of a 4-byte TS header having information such as a PID for identifying a stream and a 184-byte TS payload for storing data. The PES packet is divided and stored in the TS payload. The In the case of a BD-ROM, a 4-byte TP_Extra_Header is added to a TS packet, forms a 192-byte source packet, and is written in multiplexed data. In TP_Extra_Header, information such as ATS (Arrival_Time_Stamp) is described. ATS indicates the transfer start time of the TS packet to the PID filter of the decoder. Source packets are arranged in the multiplexed data as shown in the lower part of FIG. 30, and a number incremented from the head of the multiplexed data is called an SPN (source packet number).

In addition, TS packets included in the multiplexed data include PAT (Program Association Table), PMT (Program Map Table), PCR (Program Clock Reference), and the like in addition to each stream such as video / audio / caption. PAT indicates what the PID of the PMT used in the multiplexed data is, and the PID of the PAT itself is registered as 0. The PMT has the PID of each stream such as video / audio / subtitles included in the multiplexed data and the attribute information of the stream corresponding to each PID, and has various descriptors related to the multiplexed data. The descriptor includes copy control information for instructing permission / non-permission of copying of multiplexed data. In order to synchronize the ATC (Arrival Time Clock), which is the ATS time axis, and the STC (System Time Clock), which is the PTS / DTS time axis, the PCR corresponds to the ATS in which the PCR packet is transferred to the decoder. Contains STC time information.

FIG. 31 is a diagram for explaining the data structure of the PMT in detail. A PMT header describing the length of data included in the PMT is arranged at the head of the PMT. After that, a plurality of descriptors related to multiplexed data are arranged. The copy control information and the like are described as descriptors. After the descriptor, a plurality of pieces of stream information regarding each stream included in the multiplexed data are arranged. The stream information includes a stream descriptor in which a stream type, a stream PID, and stream attribute information (frame rate, aspect ratio, etc.) are described to identify a compression codec of the stream. There are as many stream descriptors as the number of streams existing in the multiplexed data.

When recording on a recording medium or the like, the multiplexed data is recorded together with the multiplexed data information file.

As shown in FIG. 32, the multiplexed data information file is management information of multiplexed data, has one-to-one correspondence with the multiplexed data, and includes multiplexed data information, stream attribute information, and an entry map.

The multiplexed data information includes a system rate, a reproduction start time, and a reproduction end time as shown in FIG. The system rate indicates a maximum transfer rate of multiplexed data to a PID filter of a system target decoder described later. The ATS interval included in the multiplexed data is set to be equal to or less than the system rate. The playback start time is the PTS of the first video frame of the multiplexed data, and the playback end time is set by adding the playback interval for one frame to the PTS of the video frame at the end of the multiplexed data.

In the stream attribute information, as shown in FIG. 33, attribute information about each stream included in the multiplexed data is registered for each PID. The attribute information has different information for each video stream, audio stream, presentation graphics stream, and interactive graphics stream. The video stream attribute information includes the compression codec used to compress the video stream, the resolution of the individual picture data constituting the video stream, the aspect ratio, and the frame rate. It has information such as how much it is. The audio stream attribute information includes the compression codec used to compress the audio stream, the number of channels included in the audio stream, the language supported, and the sampling frequency. With information. These pieces of information are used for initialization of the decoder before the player reproduces it.

In this embodiment, among the multiplexed data, the stream type included in the PMT is used. Also, when multiplexed data is recorded on the recording medium, video stream attribute information included in the multiplexed data information is used. Specifically, in the video encoding method or apparatus shown in each of the above embodiments, the video encoding shown in each of the above embodiments for the stream type or video stream attribute information included in the PMT. There is provided a step or means for setting unique information indicating that the video data is generated by the method or apparatus. With this configuration, it is possible to discriminate between video data generated by the moving picture encoding method or apparatus described in the above embodiments and video data compliant with other standards.

FIG. 34 shows the steps of the moving picture decoding method according to the present embodiment. In step exS100, the stream type included in the PMT or the video stream attribute information included in the multiplexed data information is acquired from the multiplexed data. Next, in step exS101, it is determined whether or not the stream type or the video stream attribute information indicates multiplexed data generated by the moving picture encoding method or apparatus described in the above embodiments. To do. When it is determined that the stream type or the video stream attribute information is generated by the moving image encoding method or apparatus described in the above embodiments, in step exS102, the above embodiments are performed. Decoding is performed by the moving picture decoding method shown in the form. If the stream type or video stream attribute information indicates that it conforms to a standard such as conventional MPEG-2, MPEG4-AVC, or VC-1, in step exS103, the conventional information Decoding is performed by a moving image decoding method compliant with the standard.

In this way, by setting a new unique value in the stream type or video stream attribute information, whether or not decoding is possible with the moving picture decoding method or apparatus described in each of the above embodiments is performed. Judgment can be made. Therefore, even when multiplexed data conforming to different standards is input, an appropriate decoding method or apparatus can be selected, and therefore decoding can be performed without causing an error. In addition, the moving picture encoding method or apparatus or the moving picture decoding method or apparatus described in this embodiment can be used in any of the above-described devices and systems.

(Embodiment 8)
The moving picture encoding method and apparatus and moving picture decoding method and apparatus described in the above embodiments are typically realized by an LSI that is an integrated circuit. As an example, FIG. 35 shows the configuration of an LSI ex500 that is made into one chip. The LSI ex500 includes elements ex501, ex502, ex503, ex504, ex505, ex506, ex507, ex508, and ex509 described below, and each element is connected via a bus ex510. The power supply circuit unit ex505 is activated to an operable state by supplying power to each unit when the power supply is on.

For example, when performing the encoding process, the LSI ex500 performs the microphone ex117 and the camera ex113 by the AV I / O ex509 based on the control of the control unit ex501 including the CPU ex502, the memory controller ex503, the stream controller ex504, the drive frequency control unit ex512, and the like. The AV signal is input from the above. The input AV signal is temporarily stored in an external memory ex511 such as SDRAM. Based on the control of the control unit ex501, the accumulated data is divided into a plurality of times as appropriate according to the processing amount and the processing speed and sent to the signal processing unit ex507, and the signal processing unit ex507 encodes an audio signal and / or video. Signal encoding is performed. Here, the encoding process of the video signal is the encoding process described in the above embodiments. The signal processing unit ex507 further performs processing such as multiplexing the encoded audio data and the encoded video data according to circumstances, and outputs the result from the stream I / Oex 506 to the outside. The output multiplexed data is transmitted to the base station ex107 or written to the recording medium ex215. It should be noted that data should be temporarily stored in the buffer ex508 so as to be synchronized when multiplexing.

In the above description, the memory ex511 is described as an external configuration of the LSI ex500. However, a configuration included in the LSI ex500 may be used. The number of buffers ex508 is not limited to one, and a plurality of buffers may be provided. The LSI ex500 may be made into one chip or a plurality of chips.

In the above description, the control unit ex510 includes the CPU ex502, the memory controller ex503, the stream controller ex504, the drive frequency control unit ex512, and the like, but the configuration of the control unit ex510 is not limited to this configuration. For example, the signal processing unit ex507 may further include a CPU. By providing a CPU also in the signal processing unit ex507, the processing speed can be further improved. As another example, the CPU ex502 may be configured to include a signal processing unit ex507 or, for example, an audio signal processing unit that is a part of the signal processing unit ex507. In such a case, the control unit ex501 is configured to include a signal processing unit ex507 or a CPU ex502 having a part thereof.

In addition, although it was set as LSI here, it may be called IC, system LSI, super LSI, and ultra LSI depending on the degree of integration.

Further, the method of circuit integration is not limited to LSI, and implementation with a dedicated circuit or a general-purpose processor is also possible. An FPGA (Field Programmable Gate Array) that can be programmed after manufacturing the LSI or a reconfigurable processor that can reconfigure the connection and setting of circuit cells inside the LSI may be used.

Furthermore, if integrated circuit technology that replaces LSI emerges as a result of progress in semiconductor technology or other derived technology, it is naturally possible to integrate functional blocks using this technology. Biotechnology can be applied.

(Embodiment 9)
When decoding the video data generated by the moving picture encoding method or apparatus shown in the above embodiments, the video data conforming to the conventional standards such as MPEG-2, MPEG4-AVC, and VC-1 is decoded. It is conceivable that the amount of processing increases compared to the case. Therefore, in LSI ex500, it is necessary to set a driving frequency higher than the driving frequency of CPU ex502 when decoding video data compliant with the conventional standard. However, when the drive frequency is increased, there is a problem that power consumption increases.

In order to solve this problem, moving picture decoding devices such as the television ex300 and LSI ex500 are configured to identify which standard the video data conforms to and switch the driving frequency in accordance with the standard. FIG. 36 shows a configuration ex800 in the present embodiment. The drive frequency switching unit ex803 sets the drive frequency high when the video data is generated by the moving image encoding method or apparatus described in the above embodiments. Then, the decoding processing unit ex801 that executes the moving picture decoding method described in each of the above embodiments is instructed to decode the video data. On the other hand, when the video data is video data compliant with the conventional standard, compared to the case where the video data is generated by the moving picture encoding method or apparatus shown in the above embodiments, Set the drive frequency low. Then, it instructs the decoding processing unit ex802 compliant with the conventional standard to decode the video data.

More specifically, the drive frequency switching unit ex803 includes a CPU ex502 and a drive frequency control unit ex512 in FIG. Also, the decoding processing unit ex801 that executes the moving picture decoding method shown in each of the above embodiments and the decoding processing unit ex802 that complies with the conventional standard correspond to the signal processing unit ex507 in FIG. The CPU ex502 identifies which standard the video data conforms to. Then, based on the signal from the CPU ex502, the drive frequency control unit ex512 sets the drive frequency. Further, based on the signal from the CPU ex502, the signal processing unit ex507 decodes the video data. Here, for the identification of the video data, for example, it is conceivable to use the identification information described in the seventh embodiment. The identification information is not limited to that described in Embodiment 7, and any information that can identify which standard the video data conforms to may be used. For example, it is possible to identify which standard the video data conforms to based on an external signal that identifies whether the video data is used for a television or a disk. In some cases, identification may be performed based on such an external signal. In addition, the selection of the driving frequency in the CPU ex502 may be performed based on, for example, a look-up table in which video data standards and driving frequencies are associated with each other as shown in FIG. The look-up table is stored in the buffer ex508 or the internal memory of the LSI, and the CPU ex502 can select the drive frequency by referring to the look-up table.

FIG. 37 shows steps for executing the method of the present embodiment. First, in step exS200, the signal processing unit ex507 acquires identification information from the multiplexed data. Next, in step exS201, the CPU ex502 identifies whether the video data is generated by the encoding method or apparatus described in each of the above embodiments based on the identification information. When the video data is generated by the encoding method or apparatus shown in the above embodiments, in step exS202, the CPU ex502 sends a signal for setting the drive frequency high to the drive frequency control unit ex512. Then, the drive frequency control unit ex512 sets a high drive frequency. On the other hand, if it indicates that the video data conforms to the conventional standards such as MPEG-2, MPEG4-AVC, and VC-1, in step exS203, the CPU ex502 drives the signal for setting the drive frequency low. This is sent to the frequency control unit ex512. Then, in the drive frequency control unit ex512, the drive frequency is set to be lower than that in the case where the video data is generated by the encoding method or apparatus described in the above embodiments.

Furthermore, the power saving effect can be further enhanced by changing the voltage applied to the LSI ex500 or the device including the LSI ex500 in conjunction with the switching of the driving frequency. For example, when the drive frequency is set low, it is conceivable that the voltage applied to the LSI ex500 or the device including the LSI ex500 is set low as compared with the case where the drive frequency is set high.

In addition, the setting method of the driving frequency may be set to a high driving frequency when the processing amount at the time of decoding is large, and to a low driving frequency when the processing amount at the time of decoding is small. It is not limited to the method. For example, the amount of processing for decoding video data compliant with the MPEG4-AVC standard is larger than the amount of processing for decoding video data generated by the moving picture encoding method or apparatus described in the above embodiments. It is conceivable that the setting of the driving frequency is reversed to that in the case described above.

Furthermore, the method for setting the drive frequency is not limited to the configuration in which the drive frequency is lowered. For example, when the identification information indicates that the video data is generated by the moving image encoding method or apparatus described in the above embodiments, the voltage applied to the LSIex500 or the apparatus including the LSIex500 is set high. However, when it is shown that the video data conforms to the conventional standards such as MPEG-2, MPEG4-AVC, VC-1, etc., it is also possible to set the voltage applied to the LSIex500 or the device including the LSIex500 low. It is done. As another example, when the identification information indicates that the video data is generated by the moving image encoding method or apparatus described in the above embodiments, the driving of the CPU ex502 is stopped. If the video data conforms to the standards such as MPEG-2, MPEG4-AVC, VC-1, etc., the CPU ex502 is temporarily stopped because there is room in processing. Is also possible. Even when the identification information indicates that the video data is generated by the moving image encoding method or apparatus described in each of the above embodiments, if there is a margin for processing, the CPU ex502 is temporarily driven. It can also be stopped. In this case, it is conceivable to set the stop time shorter than in the case where the video data conforms to the conventional standards such as MPEG-2, MPEG4-AVC, and VC-1.

Thus, it is possible to save power by switching the drive frequency according to the standard to which the video data conforms. In addition, when the battery is used to drive the LSI ex500 or the device including the LSI ex500, it is possible to extend the life of the battery with power saving.

(Embodiment 10)
A plurality of video data that conforms to different standards may be input to the above-described devices and systems such as a television and a mobile phone. As described above, the signal processing unit ex507 of the LSI ex500 needs to support a plurality of standards in order to be able to decode even when a plurality of video data complying with different standards is input. However, when the signal processing unit ex507 corresponding to each standard is used individually, there is a problem that the circuit scale of the LSI ex500 increases and the cost increases.

In order to solve this problem, a decoding processing unit for executing the moving picture decoding method shown in each of the above embodiments and a decoding conforming to a standard such as MPEG-2, MPEG4-AVC, or VC-1 The processing unit is partly shared. An example of this configuration is shown as ex900 in FIG. 39A. For example, the moving picture decoding method shown in each of the above embodiments and the moving picture decoding method compliant with the MPEG4-AVC standard are processed in processes such as entropy coding, inverse quantization, deblocking filter, and motion compensation. Some contents are common. For the common processing content, the decoding processing unit ex902 corresponding to the MPEG4-AVC standard is shared, and for the other processing content unique to the present invention not corresponding to the MPEG4-AVC standard, the dedicated decoding processing unit ex901 is used. Configuration is conceivable. In particular, since the present invention is characterized by inverse quantization, for example, a dedicated decoding processing unit ex901 is used for inverse quantization, and other entropy coding, deblocking filter, motion compensation, and the like are used. For any or all of the processes, it is conceivable to share the decoding processing unit. Regarding the sharing of the decoding processing unit, regarding the common processing content, the decoding processing unit for executing the moving picture decoding method described in each of the above embodiments is shared, and the processing content specific to the MPEG4-AVC standard As for, a configuration using a dedicated decoding processing unit may be used.

Further, ex1000 in FIG. 39B shows another example in which processing is partially shared. In this example, a dedicated decoding processing unit ex1001 corresponding to processing content unique to the present invention, a dedicated decoding processing unit ex1002 corresponding to processing content specific to other conventional standards, and a moving picture decoding method of the present invention A common decoding processing unit ex1003 corresponding to processing contents common to other conventional video decoding methods is used. Here, the dedicated decoding processing units ex1001 and ex1002 are not necessarily specialized in the processing content specific to the present invention or other conventional standards, and may be capable of executing other general-purpose processing. Also, the configuration of the present embodiment can be implemented by LSI ex500.

As described above, by sharing the decoding processing unit with respect to the processing contents common to the moving picture decoding method of the present invention and the moving picture decoding method of the conventional standard, the circuit scale of the LSI is reduced, and the cost is reduced. It is possible to reduce.

As mentioned above, although the component mounting method of this invention was demonstrated based on embodiment, this invention is not limited to this embodiment. Unless it deviates from the meaning of this invention, the form which carried out the various deformation | transformation which those skilled in the art can think to this embodiment, and the structure constructed | assembled combining the component in different embodiment is also contained in the scope of the present invention. .

The present invention relates to a moving image encoding method / encoding device and a decoding method / decoding device. In particular, the present invention relates to a variable length coding method and decoding.

1900 MPEG-2 Encoder 1902

First Description Unit

1904, 2004 Dependent View Parameter Calculation Unit 1906 Second Description Unit 1908 MPEG-4 MVC Encoder 2000 First Analysis Unit 2002 MPEG-2 Decoder 2006 Comparison Unit 2008 Second Analysis Unit 2010 MPEG-4 MVC decoder 2012 switch A19 video encoding device A20 video decoding device

Claims

A video encoding method for encoding a plurality of views using a multi-view video encoding standard and an MPEG-2 video encoding standard using a synchronization timing parameter,
Deriving timing information in units of hours, minutes and seconds;
Writing the derived timing information as a time_code parameter in a GOP (group of pictures) header in the MPEG-2 compressed video stream of the base view;
Identifying a position of a first intra picture to be encoded following the header;
Deriving a value of a temporal reference parameter of the first intra picture;
Writing the derived timing information as a time parameter, minute parameter and second parameter in a picture timing SEI (Supplementary Additional Information) message;
Writing the derived time reference parameter value as an n_frame parameter in the picture timing SEI message;
Writing the picture timing SEI message to the compressed video stream of the dependent view between the encoded sequence parameter set and a first encoded picture located after the encoded sequence parameter set; A video encoding method including:
A moving picture decoding method for decoding a plurality of views using a multi-view video coding standard and an MPEG-2 video coding standard using a synchronization timing parameter,
Analyzing the time_code parameter from the GOP header in the MPEG-2 compressed video stream of the base view;
Calculating first timing information from the analyzed time_code parameter;
Locating the first picture timing SEI message encoded following the dependent view sequence parameter set;
Deriving second timing information from the hour parameter, minute parameter and second parameter of the picture timing SEI message;
Determining whether the calculated first timing information is the same value as the derived second timing information,
When the calculated first timing information is the same value as the derived second timing information, the base view picture of the GOP encoded with the MPEG-2 compressed video stream is used. Performing an inter-view prediction process on the picture of the dependent view encoded following the sequence parameter set;
When the calculated first timing information is not the same value as the derived second timing information, another sequence parameter set in the encoded video of the dependent view is searched for and another timing information A method for decoding a moving image, comprising:
A moving picture decoding method for decoding a plurality of views using a multi-view video coding standard and an MPEG-2 video coding standard using a synchronization timing parameter,
Analyzing the first timing information from the header of the first GOP in the MPEG-2 compressed video stream of the base view;
Decoding the picture of the first GOP using an MPEG-2 video decoding tool;
Identifying a picture of a dependent view whose time coincides with the decoded picture of a decoded base view;
Locating a first picture timing SEI message encoded following a sequence parameter set of a second GOP including the picture of a dependent view;
Analyzing second timing information from the identified picture timing SEI message;
Determining whether the first timing information includes the same value as the analyzed second timing information,
Decoding the picture of the identified dependent view using an MPEG-4 MVC decoding tool if the first timing information includes the same value as the analyzed second timing information;
When the first timing information does not include the same value as the analyzed second timing information, the method includes a step of duplicating the decoded picture of the base view as a reconstructed picture of the dependent view. Decryption method.
A video encoding method for encoding a plurality of views using a multi-view video encoding standard and an MPEG-2 video encoding standard using a synchronization timing parameter,
Locating the first intra picture of the base view GOP;
Writing a first temporal reference parameter in a header of the first intra picture of a base view;
Writing a frame_mbs_only_flag parameter to the GOP sequence parameter set in the dependent view;
Writing a second temporal reference parameter in the header of the picture displayed first in the GOP of the base view;
Locating a second picture in the GOP of a dependent view that is temporally related to the first picture of a base view;
Determining whether the frame_mbs_only_flag parameter contains a value of 1,
When the frame_mbs_only_flag parameter includes a value of 1, including setting a POC value to the same value as a difference value between the second time reference parameter and the first time reference parameter;
When the frame_mbs_only_flag parameter does not include a value of 1, setting the POC value to a value twice the difference value between the second time reference parameter and the first time reference parameter;
And writing the POC value into a header of a slice belonging to the second picture of the dependent view.
A moving picture decoding method for decoding a plurality of views using a multi-view video coding standard and an MPEG-2 video coding standard using a synchronization timing parameter,
Locating the first intra picture in the base view GOP;
Analyzing a first temporal reference parameter from a header of the first intra picture of a base view;
Analyzing the frame_mbs_only_flag parameter from the GOP sequence parameter set in the dependent view;
Analyzing a second temporal reference parameter from a header of a picture displayed first in the GOP of the base view;
Determining whether the frame_mbs_only_flag parameter contains a value of 1,
When the frame_mbs_only_flag parameter includes a value of 1, including setting a first POC value to the same value as a difference value between the second time reference parameter and the first time reference parameter;
When the frame_mbs_only_flag parameter does not include a value of 1, setting the first POC value to a value twice the difference value between the second time reference parameter and the first time reference parameter;
Analyzing the second POC value from the header of the slice belonging to the picture of the dependent view;
Determining whether the first POC value is equal to the second POC value;
further,
Decoding the picture of the dependent view using an MPEG-4 MVC decoding tool and the reconstructed sample of the first picture when the first POC value is equal to the second POC value; Including
A method for decoding a moving picture, comprising: searching for another picture in the GOP of a dependent view and analyzing another POC value when the first POC value is not equal to the second POC value.
A moving picture decoding method for decoding a plurality of views using a multi-view video coding standard and an MPEG-2 video coding standard using a synchronization timing parameter,
Locating the first intra picture of the base view GOP;
Analyzing a first temporal reference parameter from a header of the first intra picture of a base view;
Analyzing the frame_mbs_only_flag parameter from the GOP sequence parameter set in the dependent view;
Analyzing a second temporal reference parameter from a header of a picture displayed first in the GOP of the base view;
Decoding the first picture using an MPEG-2 video decoding tool;
Identifying a second picture in the GOP of a dependent view that temporally matches the first picture of a decoded base view;
Determining whether the frame_mbs_only_flag parameter contains a value of 1,
When the frame_mbs_only_flag parameter includes a value of 1, including setting a first POC value to the same value as a difference value between the second time reference parameter and the first time reference parameter;
When the frame_mbs_only_flag parameter does not include a value of 1, setting the first POC value to a value twice the difference value between the second time reference parameter and the first time reference parameter;
Analyzing a second POC value from a header of a slice belonging to the picture of the identified dependent view;
Determining whether the first POC value is equal to the second POC value;
Decoding the picture of the dependent view using an MPEG-4 MVC decoding tool and the reconstructed sample of the first picture when the first POC value is equal to the second POC value; Including
A method for decoding a moving picture, comprising: copying the first picture of a decoded base view as a reconstructed picture of the second picture when the first POC value is not equal to the second POC value.
A video encoding method for encoding a plurality of views using a multi-view video encoding standard and an MPEG-2 video encoding standard using a synchronization timing parameter,
Writing a picture_structure parameter in a picture encoding extension header in the first picture of the base view of the MPEG-2 format;
Identifying a dependent view second picture that matches the first picture of the base view;
Deriving a field_picture_flag parameter and a bottom_field_flag parameter from the picture_structure parameter;
And writing the derived field_picture_flag parameter and the bottom_field_flag parameter in a header of a slice belonging to the second picture of the dependent view.
A moving picture decoding method for decoding a plurality of views using a multi-view video coding standard and an MPEG-2 video coding standard using a synchronization timing parameter,
Analyzing a picture_structure parameter from a picture encoding extension header in the first picture of the base view of the MPEG-2 format;
Identifying a dependent view second picture that matches the first picture of the base view;
Deriving a field_picture_flag parameter and a bottom_field_flag parameter from the picture_structure parameter;
Analyzing a second field_picture_flag parameter and a second bottom_field_flag parameter from a header of a slice belonging to the identified second picture;
Determining whether the first field_picture_flag parameter is the same value as the second field_picture_flag parameter and the first bottom_field_flag parameter is the same value as the second bottom_field_flag parameter;
When the first field_picture_flag parameter has the same value as the second field_picture_flag parameter and the first bottom_field_flag parameter has the same value as the second bottom_field_flag parameter, the MPEG-4 MVC decoding tool and the base Decoding the second picture of the dependent view using a decoded sample of the first picture of the view,
Reconstructing the second picture if the first field_picture_flag parameter is not the same value as the second field_picture_flag parameter, or if the first bottom_field_flag parameter is not the same value as the second bottom_field_flag parameter A method of decoding a moving image, comprising: replicating the first picture of a decoded base view as a picture.
A video encoding method for encoding a plurality of views using a multi-view video encoding standard and an MPEG-2 video encoding standard using a synchronization timing parameter,
Writing a picture_structure parameter, a top_field_first parameter, and a repeat_first_field parameter in a picture encoding extension header in the first picture of the base view of the MPEG-2 format;
Identifying a dependent view second picture that matches the first picture of the base view;
Deriving a pict_struct parameter based on the picture_structure parameter, the top_field_first parameter, and the repeat_first_field parameter of the first picture of a base view;
And writing the derived pict_struct parameter in a picture timing SEI message associated with the second picture of the dependent view.
A moving picture decoding method for decoding a plurality of views using a multi-view video coding standard and an MPEG-2 video coding standard using a synchronization timing parameter,
Analyzing a picture_structure parameter, a top_field_first parameter, and a repeat_first_field parameter from a picture encoding extension header in the first picture of the base view of the MPEG-2 format;
Identifying a dependent view second picture that matches the first picture of the base view;
Deriving a first pict_struct parameter based on the picture_structure parameter, the top_field_first parameter and the repeat_first_field parameter of the second picture of a base view;
Analyzing a second pict_struct parameter from a picture timing SEI message associated with the second picture of the dependent view;
Determining whether the first pict_struct parameter is the same value as the second pict_struct parameter;
When the first pict_struct parameter has the same value as the second pict_struct parameter, the MPEG-4 MVC decoding tool and the decoded sample of the first picture in the base view are used to determine the first picture in the dependent view. Decoding the two pictures, and when the first pict_struct parameter is not the same value as the second pict_struct parameter, the first picture of the decoded base view as a reconstructed picture of the second picture A method for decoding a moving image, comprising:
A video encoding method for encoding a plurality of views using a multi-view video encoding standard and an MPEG-2 video encoding standard using a synchronization timing parameter,
Writing a frame_rate_code parameter to the sequence header in the GOP of the MPEG-2 format base view;
Identifying a dependent view GOP that matches the GOP of the base view;
Deriving a num_units_in_tick parameter and a time_scale parameter based on the frame_rate_code parameter of the sequence header;
And writing the derived num_units_in_tick parameter and the time_scale parameter in the sequence parameter set of the dependent view.
A moving picture decoding method for decoding a plurality of views using a multi-view video coding standard and an MPEG-2 video coding standard using a synchronization timing parameter,
Analyzing the frame_rate_code parameter from the sequence header in the GOP of the MPEG-2 format base view;
Identifying a dependent view GOP that matches the GOP of the base view;
Deriving a first num_units_in_tick parameter and a first time_scale parameter based on the frame_rate_code parameter of the sequence header;
Analyzing a second num_units_in_tick parameter and a second time_scale parameter from the sequence parameter set of the dependent view;
Determining whether the first num_units_in_tick parameter is the same value as the second num_units_in_tick parameter, and the first time_scale parameter is the same value as the second time_scale parameter,
MPEG-4 MVC decoding tool and base when the first num_units_in_tick parameter is the same value as the second num_units_in_tick parameter and the first time_scale parameter is the same value as the second time_scale parameter Decoding the GOP of the dependent view using the decoded picture of the GOP of the view,
Dependent view reconstruction if the first num_units_in_tick parameter is not the same value as the second num_units_in_tick parameter, or if the first time_scale parameter is not the same value as the second time_scale parameter A method for decoding a moving picture, comprising: replicating the picture of a decoded base view as a picture.
A video encoding apparatus that encodes a plurality of views using a multi-view video encoding standard and an MPEG-2 video encoding standard using a synchronization timing parameter,
A derivation unit for deriving timing information in units of hours, minutes and seconds;
A writing unit for writing the derived timing information as a time_code parameter to a GOP header in the MPEG-2 compressed video stream of the base view;
A position specifying unit for specifying a position of a first intra picture encoded following the header;
A derivation unit for deriving a value of a temporal reference parameter of the intra picture;
A writing unit that writes the derived timing information as a time parameter, a minute parameter, and a second parameter to a picture timing SEI message;
A writing unit that writes the value of the derived time reference parameter as the n_frame parameter to the picture timing SEI message;
A writing unit for writing the picture timing SEI message to the compressed video stream of the dependent view, which is between the encoded sequence parameter set and the first encoded picture located after the encoded sequence parameter set A video encoding device comprising:
A video decoding device for decoding a plurality of views using a multi-view video encoding standard and an MPEG-2 video encoding standard using a synchronization timing parameter,
An analysis unit for analyzing the time_code parameter from the GOP header in the MPEG-2 compressed video stream of the base view;
A calculation unit for calculating first timing information from the analyzed time_code parameter;
A position specifying unit for specifying the position of the first picture timing SEI message encoded following the sequence parameter set of the dependent view;
A derivation unit for deriving second timing information from the hour parameter, minute parameter and second parameter of the picture timing SEI message;
A determination unit that determines whether the calculated first timing information is the same value as the derived second timing information;
When the calculated first timing information is the same value as the derived second timing information,
Using the GOP base-view picture encoded with the MPEG-2 compressed video stream, an inter-view prediction process is performed on the dependent-view picture encoded following the sequence parameter set. With a predictor to execute,
When the calculated first timing information is not the same value as the derived second timing information,
A moving image decoding apparatus comprising: a search unit that searches for another sequence parameter set in the encoded video of the dependent view and derives another timing information.
A video encoding apparatus that encodes a plurality of views using a multi-view video encoding standard and an MPEG-2 video encoding standard using a synchronization timing parameter,
An analysis unit for analyzing the first timing information from the header of the first GOP in the MPEG-2 compressed video stream of the base view;
A decoding unit for decoding the picture of the first GOP using an MPEG-2 video decoding tool;
A specifying unit for specifying a picture of a dependent view that temporally matches the picture of the decoded base view;
A position specifying unit for specifying a position of a first picture timing SEI message encoded following a sequence parameter set of a second GOP including the picture of the dependent view;
An analysis unit for analyzing second timing information from the identified picture timing SEI message;
A determination unit that determines whether the first timing information includes the same value as the analyzed second timing information;
When the first timing information includes the same value as the analyzed second timing information,
A decoding unit for decoding the picture of the specified dependent view using an MPEG-4 MVC decoding tool;
When the first timing information does not include the same value as the analyzed second timing information,
A moving image coding apparatus comprising: a duplicating unit that duplicates the decoded picture of the base view as a reconstructed picture of the dependent view.
A video encoding apparatus that encodes a plurality of views using a multi-view video encoding standard and an MPEG-2 video encoding standard using a synchronization timing parameter,
A position specifying unit for specifying the position of the first intra picture of the GOP of the base view;
A writing unit for writing a first temporal reference parameter in a header of the first intra picture of the base view;
A writing unit for writing the frame_mbs_only_flag parameter to the GOP sequence parameter set of the dependent view;
A writing unit for writing the second temporal reference parameter to the header of the picture displayed first in the GOP of the base view;
A position specifying unit for specifying a position of the second picture in the GOP of the dependent view, which is temporally related to the first picture of the base view;
A determination unit that determines whether the frame_mbs_only_flag parameter includes a value of 1,
When the frame_mbs_only_flag parameter includes a value of 1,
A setting unit for setting a POC value to the same value as a difference value between the second time reference parameter and the first time reference parameter;
If the frame_mbs_only_flag parameter does not contain a value of 1,
A setting unit for setting a POC value to a value twice the difference value between the second time reference parameter and the first time reference parameter;
A moving image encoding apparatus comprising: a writing unit that writes the POC value in a header of a slice belonging to the second picture of the dependent view.
A video decoding device for decoding a plurality of views using a multi-view video encoding standard and an MPEG-2 video encoding standard using a synchronization timing parameter,
A position specifying unit for specifying the position of the first intra picture of the GOP of the base view;
An analysis unit for analyzing a first temporal reference parameter from a header of the first intra picture of a base view;
An analysis unit for analyzing the frame_mbs_only_flag parameter from the GOP sequence parameter set of the dependent view;
An analysis unit for analyzing a second temporal reference parameter from a header of a picture displayed first in the GOP of the base view;
A determination unit that determines whether or not the frame_mbs_only_flag parameter includes a value of 1,
When the frame_mbs_only_flag parameter includes a value of 1,
A setting unit that sets a first POC value to the same value as a difference value between the second time reference parameter and the first time reference parameter;
If the frame_mbs_only_flag parameter does not contain a value of 1,
A setting unit for setting the first POC value to a value twice the difference value between the second time reference parameter and the first time reference parameter;
An analysis unit for analyzing the second POC value from the header of the slice belonging to the picture of the dependent view;
A determination unit for determining whether or not the first POC value is equal to the second POC value;
If the first POC value is equal to the second POC value;
A decoding unit for decoding the picture of the dependent view using an MPEG-4 MVC decoding tool and the reconstructed sample of the first picture;
If the first POC value is not equal to the second POC value;
A moving picture decoding apparatus comprising: a search unit that searches for another picture in the GOP of a dependent view and analyzes another POC value.
A video decoding device for decoding a plurality of views using a multi-view video encoding standard and an MPEG-2 video encoding standard using a synchronization timing parameter,
A position specifying unit for specifying the position of the first intra picture of the GOP of the base view;
An analysis unit for analyzing a first temporal reference parameter from a header of the first intra picture of a base view;
An analysis unit for analyzing the frame_mbs_only_flag parameter from the GOP sequence parameter set of the dependent view;
An analysis unit for analyzing a second temporal reference parameter from a header of a picture displayed first in the GOP of the base view;
A decoding unit for decoding the first picture using an MPEG-2 video decoding tool;
A identifying unit that identifies a second picture in the GOP of the dependent view that temporally matches the first picture of the decoded base view;
A determination unit that determines whether or not the frame_mbs_only_flag parameter includes a value of 1,
When the frame_mbs_only_flag parameter includes a value of 1,
A setting unit that sets a first POC value to the same value as a difference value between the second time reference parameter and the first time reference parameter;
If the frame_mbs_only_flag parameter does not contain a value of 1,
A setting unit for setting the first POC value to a value twice the difference value between the second time reference parameter and the first time reference parameter;
An analysis unit for analyzing a second POC value from a header of a slice belonging to the picture of the specified dependent view;
A determination unit for determining whether or not the first POC value is equal to the second POC value;
If the first POC value is equal to the second POC value;
A decoding unit for decoding the picture of the dependent view using an MPEG-4 MVC decoding tool and the reconstructed sample of the first picture;
If the first POC value is not equal to the second POC value;
A moving picture decoding apparatus comprising: a duplicating unit that duplicates the first picture of the decoded base view as a reconstructed picture of the second picture.
A video encoding apparatus that encodes a plurality of views using a multi-view video encoding standard and an MPEG-2 video encoding standard using a synchronization timing parameter,
A writing unit for writing a picture_structure parameter in the picture encoding extension header of the first picture of the base view in the MPEG-2 format;
A specifying unit that specifies a second picture of the dependent view that matches the first picture of the base view;
A derivation unit for deriving a field_picture_flag parameter and a bottom_field_flag parameter from the picture_structure parameter;
A moving picture encoding apparatus comprising: a writing unit that writes the derived field_picture_flag parameter and the bottom_field_flag parameter in a header of a slice belonging to the second picture of a dependent view.
A video decoding device for decoding a plurality of views using a multi-view video encoding standard and an MPEG-2 video encoding standard using a synchronization timing parameter,
An analysis unit for analyzing a picture_structure parameter from a picture encoding extension header in the first picture of the base view of the MPEG-2 format;
A specifying unit that specifies a second picture of the dependent view that matches the first picture of the base view;
A derivation unit for deriving a field_picture_flag parameter and a bottom_field_flag parameter from the picture_structure parameter;
An analysis unit that analyzes a second field_picture_flag parameter and a second bottom_field_flag parameter from a header of a slice belonging to the identified second picture;
A determination unit that determines whether the first field_picture_flag parameter has the same value as the second field_picture_flag parameter, and the first bottom_field_flag parameter has the same value as the second bottom_field_flag parameter;
When the first field_picture_flag parameter is the same value as the second field_picture_flag parameter, and the first bottom_field_flag parameter is the same value as the second bottom_field_flag parameter,
A decoding unit that decodes the second picture of the dependent view using an MPEG-4 MVC decoding tool and a decoded sample of the first picture of the base view;
When the first field_picture_flag parameter is not the same value as the second field_picture_flag parameter, or when the first bottom_field_flag parameter is not the same value as the second bottom_field_flag parameter,
A moving picture decoding apparatus comprising: a duplicating unit that duplicates the first picture of the decoded base view as a reconstructed picture of the second picture.
A video encoding apparatus that encodes a plurality of views using a multi-view video encoding standard and an MPEG-2 video encoding standard using a synchronization timing parameter,
A writing unit for writing a picture_structure parameter, a top_field_first parameter, and a repeat_first_field parameter in a picture encoding extension header in the first picture of the base view of the MPEG-2 format;
A specifying unit that specifies a second picture of the dependent view that matches the first picture of the base view;
A derivation unit for deriving a pict_struct parameter based on the picture_structure parameter, the top_field_first parameter, and the repeat_first_field parameter of the first picture of a base view;
A moving picture encoding apparatus comprising: a writing unit that writes the derived pict_struct parameter in a picture timing SEI message related to the second picture of the dependent view.
A video decoding device for decoding a plurality of views using a multi-view video encoding standard and an MPEG-2 video encoding standard using a synchronization timing parameter,
An analysis unit for analyzing a picture_structure parameter, a top_field_first parameter, and a repeat_first_field parameter from a picture encoding extension header in the first picture of the base view of the MPEG-2 format;
A specifying unit that specifies a second picture of the dependent view that matches the first picture of the base view;
A derivation unit for deriving a first pict_struct parameter based on the picture_structure parameter, the top_field_first parameter, and the repeat_first_field parameter of the first picture of a base view;
An analysis unit for analyzing a second pict_struct parameter from a picture timing SEI message related to the second picture of the dependent view;
A determination unit that determines whether the first pict_struct parameter has the same value as the second pict_struct parameter;
If the first pict_struct parameter is the same value as the second pict_struct parameter;
A decoding unit that decodes the second picture of the dependent view using an MPEG-4 MVC decoding tool and a decoded sample of the first picture of the base view;
If the first pict_struct parameter is not the same value as the second pict_struct parameter;
A moving picture decoding apparatus comprising: a duplicating unit that duplicates the first picture of the decoded base view as a reconstructed picture of the second picture.
A video encoding apparatus that encodes a plurality of views using a multi-view video encoding standard and an MPEG-2 video encoding standard using a synchronization timing parameter,
A writing unit for writing a frame_rate_code parameter to a sequence header in the GOP of the MPEG-2 format base view;
A specifying unit that specifies the GOP of the dependent view that matches the GOP of the base view;
A derivation unit for deriving a num_units_in_tick parameter and a time_scale parameter based on the frame_rate_code parameter of the sequence header;
A moving image encoding apparatus comprising: a writing unit that writes the derived num_units_in_tick parameter and the time_scale parameter to a sequence parameter set of the dependent view.
A video decoding device for decoding a plurality of views using a multi-view video encoding standard and an MPEG-2 video encoding standard using a synchronization timing parameter,
An analysis unit for analyzing the frame_rate_code parameter from the sequence header in the GOP of the MPEG-2 format base view;
A specifying unit that specifies the GOP of the dependent view that matches the GOP of the base view;
A derivation unit for deriving a first num_units_in_tick parameter and a first time_scale parameter based on the frame_rate_code parameter of the sequence header;
An analysis unit for analyzing a second num_units_in_tick parameter and a second time_scale parameter from the sequence parameter set of the dependent view;
A determination unit configured to determine whether the first num_units_in_tick parameter has the same value as the second num_units_in_tick parameter and whether the first time_scale parameter has the same value as the second time_scale parameter. ,
When the first num_units_in_tick parameter is the same value as the second num_units_in_tick parameter and the first time_scale parameter is the same value as the second time_scale parameter,
A decoding unit that decodes the GOP of the dependent view using an MPEG-4 MVC decoding tool and a decoded picture of the GOP of the base view;
When the first num_units_in_tick parameter is not the same value as the second num_units_in_tick parameter, or when the first time_scale parameter is not the same value as the second time_scale parameter,
A moving picture decoding apparatus comprising: a duplicating unit that duplicates the picture of a decoded base view as a reconstructed picture of a dependent view.