CN101217652A - An image information recording and extracting method in the process of the encoding and decoding of video images - Google Patents
An image information recording and extracting method in the process of the encoding and decoding of video images Download PDFInfo
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- CN101217652A CN101217652A CNA2007101690184A CN200710169018A CN101217652A CN 101217652 A CN101217652 A CN 101217652A CN A2007101690184 A CNA2007101690184 A CN A2007101690184A CN 200710169018 A CN200710169018 A CN 200710169018A CN 101217652 A CN101217652 A CN 101217652A
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Abstract
The invention relates to an image information recording and extracting method thereof in the process of coding and decoding video images. By setting marks, such as a region changing mark, a region number mark, a region ID, the horizontal coordinate of the left-top corner position of the region, the vertical coordinate of the left-top corner position of the region, the horizontal coordinate of the lower right corner position of the region and the vertical coordinate of the lower right corner position of the region, etc., a multi-area mark as well as subsequent and region-based video coding and video processing is fully supported. The invention can be realized by modifying and expanding the existing video standard so as to support the region-based mark, the video coding and the video processing. The invention has excellent popularizing prospect and is hopeful to generally improve the quality and the efficiency of video transmission.
Description
Technical field
The invention belongs to the video coding and decoding technology field, particularly image information recording and the extracting method in the video image encoding and decoding process.
Background technology
The network video stream business develop the inevasible restriction that is subjected to the finite bandwidth resource rapidly, and when very low bit rate carries out video compression, tend to lose some detailed information, even wherein partial information is that people are interested especially, such as the shoulder of the personage's head in video conference zone, the little target area of carrying important information in the aerial image, the interference fringe zone in the interference multispectral image, and focus zone or the like in the medical image, these can be referred to as area-of-interest.From the subjective vision angle, the recovery quality in these zones directly has influence on the whole subjective feeling quality of reconstructed image.Do not have at present effect technique as yet and can solve this defective that has video technique now.
Summary of the invention
The object of the invention is to solve the prior art deficiency, at area-of-interest transmission quality problem, provides image information recording and extracting method in the video image encoding and decoding process.
For achieving the above object, the invention provides the image information recording method in a kind of encoding video pictures process, write down following image information content and enroll the video coding code stream,
(1) at least one rectangular area in the selection piece image, the number in zone selected in record, and write down each regional area I D.
(2) with the macro block be the following information of unit record,
The position, the upper left corner in selected zone with respect to the position, the upper left corner in the horizontal-shift of the position, the upper left corner of image under it, selected zone with respect to the position, the lower right corner in the vertical shift of the position, the upper left corner of image under it, selected zone with respect to the position, the lower right corner in the horizontal-shift of the position, the upper left corner of image under it, selected zone vertical shift with respect to the position, the upper left corner of image under it;
(3) in the record present image in the position of the number of rectangular area and each rectangular area and the last piece image position of the number of rectangular area and each rectangular area whether the same.
(4) whether record uses zone marker.
And described image is still frame or motion picture.
And if do not use the function of zone marker, then the positional information of the number of rectangular area, each rectangular area and area I D save record.
And, if in the present image in the position of the number of rectangular area and each rectangular area and the last piece image position of the number of rectangular area and each rectangular area the same, then the positional information of the number of the rectangular area of present image, each rectangular area and area I D save record.
The present invention also provides the image information extracting method in the corresponding video image decoding process, it is characterized in that: from the video coding code stream, obtain digital picture, from digital picture, extract following information,
(1) obtains the number of selecting the zone, obtain each regional area I D of record.
(2) be that unit extracts following information with the macro block,
The position, the upper left corner in selected zone with respect to the position, the upper left corner in the horizontal-shift of the position, the upper left corner of image under it, selected zone with respect to the position, the lower right corner in the vertical shift of the position, the upper left corner of image under it, selected zone with respect to the position, the lower right corner in the horizontal-shift of the position, the upper left corner of image under it, selected zone vertical shift with respect to the position, the upper left corner of image under it.
(3) whether the position of the number of rectangular area and each rectangular area is the same in the position that obtains the number of rectangular area in the present image and each rectangular area and the last piece image.
(4) obtain whether use zone marker.
And described digital picture is to have removed the redundant and two field picture that obtains of time domain from the video coding code stream.
And if do not use the function of zone marker, then the positional information of the number of rectangular area, each rectangular area and area I D need not obtain.
And, if in the present image in the position of the number of rectangular area and each rectangular area and the last piece image position of the number of rectangular area and each rectangular area the same, then the positional information of the number of the rectangular area of present image, each rectangular area and area I D need not obtain.
Technical scheme of the present invention has added the special design of facing area mark in video image encoding and decoding, can support Video processing and video coding based on the zone, has strengthened interested area information content, has improved the transmission of video images quality.The present invention can be used as the high level syntax design, carries out standard in video standard, so that carry out extensive use in video technique.
Embodiment
This method is made amendment on existing video standard and is expanded, to support mark, video coding and the Video processing based on the zone.Specifically support the mark of multizone and follow-up video coding and Video processing based on the zone by marks such as setting area change mark, regional number mark, position, regional upper left corner horizontal coordinate, position, regional upper left corner vertical coordinate, position, regional lower right corner horizontal coordinate, position, regional lower right corner vertical coordinate, area I D comprehensively.
The invention provides the image information recording method in a kind of encoding video pictures process: select at least one rectangular area in the piece image, and number and each regional area I D in zone selected in record.With the macro block is unit record: the position, the upper left corner in selected zone with respect to the position, the upper left corner in the horizontal-shift of the position, the upper left corner of image under it, selected zone with respect to the position, the lower right corner in the vertical shift of the position, the upper left corner of image under it, selected zone with respect to the position, the lower right corner in the horizontal-shift of the position, the upper left corner of image under it, selected zone vertical shift with respect to the position, the upper left corner of image under it.In the record present image in the position of the number of rectangular area and each rectangular area and the last piece image position of the number of rectangular area and each rectangular area whether the same.Whether record uses zone marker.
The present invention also provides the image information extracting method in the corresponding video image decoding process, is that unit obtains with the macro block: the number in zone, the area I D that each is regional, the position, the upper left corner in selected zone is with respect to the horizontal-shift of the position, the upper left corner of image under it, the position, the upper left corner in selected zone is with respect to the vertical shift of the position, the upper left corner of image under it, the position, the lower right corner in selected zone is with respect to the horizontal-shift of the position, the upper left corner of image under it, the position, the lower right corner in selected zone is with respect to the vertical shift of the position, the upper left corner of image under it.Whether the position of the number of rectangular area and each rectangular area is the same in the position that obtains the number of rectangular area in the present image and each rectangular area and the last piece image.Obtain and whether use zone marker.
The present invention can be used for still image transmission or dynamic video transmission.During coding, image information can be from still frame or motion picture.During decoding, obtain digital picture from the video coding code stream, digital image information can be to have removed the redundant and two field picture that obtains of time domain from the video coding code stream.
Described area I D is the numbering in selected zone, and if any 3 zones, then Qu Yu ID can be respectively 1,2,3.
In order to reduce transmission code rate, improve encoding-decoding efficiency, the present invention proposes further scheme: if do not use the function of zone marker, then the positional information of the number of rectangular area, each rectangular area and area I D need not write down (or obtaining).If in the present image in the position of the number of rectangular area and each rectangular area and the last piece image position of the number of rectangular area and each rectangular area the same, then the positional information of the number of the rectangular area of present image, each rectangular area and area I D need not write down (or obtaining).Saving on this information content has directly brought the minimizing of transmission code rate, and does not damage transmission quality.Technical scheme of the present invention can be used as the high level syntax design, carries out standard in video standard, guarantees the coding transmitting terminal and receive decoding end to adopt corresponding scheme.The present invention is an example with the AVS-P2 video standard, and technical solution of the present invention is converted to modification to video standard grammer on the middle and senior level, indicates the part that the statement of symbol * adds on existing AVS-P2 standard code basis for embodiment in the following form.The target statement is not for having the AVS-P2 standard code now for other, and implication can be with reference to " the information technology advanced audio/video coding part 2: video " of State Administration for Quality Supervision and Inspection and Quarantine's issue, and the present invention will not give unnecessary details.
(1) " definition of I image head " among the AVS-P2 is revised as:
| i_picture_header() { | Descriptor |
| i_picture_start_code | f(32) |
| bbv_delay | u(16) |
| time_code_flag | u(1) |
| if(time_code_flag＝＝’1’) | |
| time_code | u(24) |
| marker_bit | f(1) |
| picture_distance | u(8) |
| if(low_delay＝＝’1’) | |
| bbv_check_times | ue(v) |
| progress_ive_frame | u(1) |
| if(progress ive frame＝＝’0’) | |
| picture_structure | u(1) |
| top_field_first | u(1) |
| repeat_first field | u(1) |
| fixed_picture_qp | u(1) |
| picture_qp | u(6) |
| if(progressive_frame＝＝’0’){ | |
| if(picture_structure＝＝’0’){ | |
| skip_mode_flag | u(1) |
| } | |
| } | |
| If(roi_enable_flag){ | |
| *roi_change_flag | u(1) |
| If(roi_change_flag){ | |
| *roi_num | u(4) |
| for(i＝0；i＜region_num；i++){ | |
| *region_ID | u(4) |
| *region_spos_x | u(7) |
| *region_spos_y | u(7) |
| *marker_bit | f(1) |
| *region_epos_x | u(7) |
| *region_epos_y | u(7) |
| } | |
| } | |
| } | |
| reserved_bits | r(4) |
| loop_filter_disable | u(1) |
| if(！loop_filter disable){ | |
| loop_fi lter_parameter_flag | u(1) |
| if(loop_filter_parameter_flag){ | |
| alpha_c_offset | se(v) |
| beta_offset | se(v) |
| } | |
| } | |
| next_start_code() | |
| } |
In the semantic description of I image head, increase following content simultaneously:
1) mark current region information change roi_change_flag1 position signless integer.Whether the area information that present frame is described is different with former frame.
2) marked region number region_num4 position signless integer.Provide the number altogether in the zone of institute's mark in the present frame.Marked region is a rectangle.
3) regional location horizontal coordinate region_spos_x7 position signless integer.With the macro block is that unit shows the horizontal-shift of the position, the upper left corner of institute's marked region with respect to the position, the upper left corner of image under it.
4) regional location vertical coordinate region_spos_y7 position signless integer.With the macro block is that unit shows the vertical shift of the position, the upper left corner of institute's marked region with respect to the position, the upper left corner of image under it.
5) regional location horizontal coordinate region_epos_x7 position signless integer.With the macro block is that unit shows the vertical shift of the position, the lower right corner of institute's marked region with respect to the position, the upper left corner of image under it.
6) regional location vertical coordinate region_epos_y7 position signless integer.With the macro block is that unit shows the vertical shift of the position, the lower right corner of institute's marked region with respect to the position, the upper left corner of image under it.
(2) " definition of PB image head " among the AVS-P2 is revised as:
| pb_picture_header(){ | Descriptor |
| pb_picture_start_code | f(32) |
| bbv_delay | u(16) |
| picture_coding_type | u(2) |
| picture_distance | u(8) |
| if(low_delay＝＝’1’) | |
| bbv_check_times | ue(v) |
| progressive_frame | u(1) |
| if(progressive_frame＝＝’0’){ | |
| picture_structure | u(1) |
| if(picture_structure＝＝’0’) | |
| advanced_pred_mode_disable | u(1) |
| } | |
| top_field_first | u(1) |
| repeat_first_field | u(1) |
| fixed_picture_qp | u(1) |
| picture_qp | u(6) |
| if(！(picture_coding_type＝＝’10’&& PictureStructure＝＝1)) | |
| picture_reference_flag | u(1) |
| no_forward_reference_flag | u(1) |
| If(roi_enable_flag){ | |
| *roi_change_flag | u(1) |
| If(roi_change_flag){ | |
| *roi_num | u(4) |
| for(i＝0；i＜region num；i++){ | |
| *region_ID | u(4) |
| *region_spos_x | u(7) |
| *region_spos_y | u(7) |
| *marker_bit | f(1) |
| *region_epos_x | u(7) |
| *region_epos_y | u(7) |
| } | |
| } | |
| } | |
| reserved_bits | r(3) |
| skip_mode_flag | u(1) |
| loop_filter_disable | u(1) |
| if(！loop_filter_disable){ | |
| loop_filter_parameter_flag | u(1) |
| if(loop_fi lter_parameter_flag){ | |
| alpha_c_offset | se(v) |
| beta_offset | se(v) |
| } | |
| } | |
| next_start_code() | |
| } |
(3) " sequence head definition " among the AVS-P2 is revised as:
| sequence_header() { | Descriptor |
| video_sequence_start_code | f(32) |
| profile_id | u(8) |
| level_id | u(8) |
| progressive_sequence | u(1) |
| horizontal_size | u(14) |
| vertical_size | u(14) |
| chroma_format | u(2) |
| sample_precision | u(3) |
| aspect_ratio | u(4) |
| frame_rate_code | u(4) |
| bit_rate_lower | u(18) |
| marker_bit | f(1) |
| bit_rate_upper | u(12) |
| low_delay | u(1) |
| marker_bit | f(1) |
| bbv_buffer_size | u(18) |
| *roi_enable_flag | u(1) |
| reserved_bits | r(3) |
| next_start_code() | |
| } |
In AVS-P2, increase following content simultaneously in the semantic description of sequence head:
Regional code sign: roi_enable_flag sign.Wherein work as its value for adopting regional code in ' 1 ' the expression video sequence; Value does not adopt regional code for ' 0 ' expression.
The present invention also can be used for other video standard except supporting the AVS-P2 standard, only need carry out the information transmission scheme of corresponding grammar correction in can the standard encoding-decoding process, and it is convenient to realize.
Claims (8)
1. the image information recording method in the encoding video pictures process is characterized in that: writes down following image information content and enrolls the video coding code stream,
(1) at least one rectangular area in the selection piece image, the number in zone selected in record, and write down each regional area I D.
(2) with the macro block be the following information of unit record,
The position, the upper left corner in selected zone with respect to the position, the upper left corner in the horizontal-shift of the position, the upper left corner of image under it, selected zone with respect to the position, the lower right corner in the vertical shift of the position, the upper left corner of image under it, selected zone with respect to the position, the lower right corner in the horizontal-shift of the position, the upper left corner of image under it, selected zone vertical shift with respect to the position, the upper left corner of image under it;
(3) in the record present image in the position of the number of rectangular area and each rectangular area and the last piece image position of the number of rectangular area and each rectangular area whether the same.
(4) whether record uses zone marker.
2. image information recording method according to claim 1 is characterized in that: described image is still frame or motion picture.
3. image information recording method according to claim 1 and 2 is characterized in that: if do not use the function of zone marker, then the positional information of the number of rectangular area, each rectangular area and area I D save record.
4. image information recording method according to claim 1 and 2, it is characterized in that: if in the present image in the position of the number of rectangular area and each rectangular area and the last piece image position of the number of rectangular area and each rectangular area the same, then the positional information of the number of the rectangular area of present image, each rectangular area and area I D save record.
5. the image information extracting method in the video image decoding process is characterized in that: from the video coding code stream, obtains digital picture, from digital picture, extracts following information,
(1) obtains the number of selecting the zone, obtain each regional area I D of record.
(2) be that unit extracts following information with the macro block,
The position, the upper left corner in selected zone with respect to the position, the upper left corner in the horizontal-shift of the position, the upper left corner of image under it, selected zone with respect to the position, the lower right corner in the vertical shift of the position, the upper left corner of image under it, selected zone with respect to the position, the lower right corner in the horizontal-shift of the position, the upper left corner of image under it, selected zone vertical shift with respect to the position, the upper left corner of image under it.
(3) whether the position of the number of rectangular area and each rectangular area is the same in the position that obtains the number of rectangular area in the present image and each rectangular area and the last piece image.
(4) obtain whether use zone marker.
6. image information extracting method according to claim 5 is characterized in that: described digital picture is to have removed the redundant and two field picture that obtains of time domain from the video coding code stream.
7. according to claim 5 or 6 described image information extracting methods, it is characterized in that: if do not use the function of zone marker, then the positional information of the number of rectangular area, each rectangular area and area I D need not obtain.
8. according to claim 5 or 6 described image information extracting methods, it is characterized in that: if in the present image in the position of the number of rectangular area and each rectangular area and the last piece image position of the number of rectangular area and each rectangular area the same, then the positional information of the number of the rectangular area of present image, each rectangular area and area I D need not obtain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101690184A CN101217652B (en) | 2007-12-26 | 2007-12-26 | An image information recording and extracting method in the process of the encoding and decoding of video images |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101690184A CN101217652B (en) | 2007-12-26 | 2007-12-26 | An image information recording and extracting method in the process of the encoding and decoding of video images |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101217652A true CN101217652A (en) | 2008-07-09 |
| CN101217652B CN101217652B (en) | 2010-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101690184A Expired - Fee Related CN101217652B (en) | 2007-12-26 | 2007-12-26 | An image information recording and extracting method in the process of the encoding and decoding of video images |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102438144A (en) * | 2011-11-22 | 2012-05-02 | 苏州科雷芯电子科技有限公司 | Video transmission method |
| CN101742327B (en) * | 2008-11-12 | 2012-11-28 | 北京中星微电子有限公司 | Video encoding and decoding methods and systems, and region description method and device |
| WO2021068918A1 (en) * | 2019-10-10 | 2021-04-15 | Huawei Technologies Co., Ltd. | An encoder, a decoder and corresponding methods for simplifying signalling picture header |
-
2007
- 2007-12-26 CN CN2007101690184A patent/CN101217652B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101742327B (en) * | 2008-11-12 | 2012-11-28 | 北京中星微电子有限公司 | Video encoding and decoding methods and systems, and region description method and device |
| CN102438144A (en) * | 2011-11-22 | 2012-05-02 | 苏州科雷芯电子科技有限公司 | Video transmission method |
| WO2021068918A1 (en) * | 2019-10-10 | 2021-04-15 | Huawei Technologies Co., Ltd. | An encoder, a decoder and corresponding methods for simplifying signalling picture header |
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| Publication number | Publication date |
|---|---|
| CN101217652B (en) | 2010-09-29 |
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