JP2016122985A - Image processing system, image processing apparatus and image processing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image processing system and an image processing apparatus and an image processing method capable of notifying a user of the fact that a video signal can represent a dynamic range wider than that of a video signal transmitted according to a current broadcasting standard.SOLUTION: An image processing apparatus includes extraction means for extracting brightness information from a video signal acquired, determination means for determining that a description indicating a dynamic range of a video transmitted according to a second standard, higher than the dynamic range of a video transmitted according to a first standard, is included in the brightness information thus extracted, recording means for recording the determination results when the brightness information includes the description, and brightness information display means for reading the determination results recorded by the recording means, and displaying the information corresponding to the video signal, and the information capable of identifying that the video signal is the dynamic range of a video transmitted according to the second standard, in combination, on a display.SELECTED DRAWING: Figure 5

Description

  The present invention relates to an image processing system, an image processing apparatus, and an image processing method that optimize display characteristics of a display video.

  In recent years, display panels capable of displaying images with a wide dynamic range are becoming popular. In the above display panel, it is possible to decode and display a video encoded by compressing information on the high luminance side in order to prevent whiteout.

  In the next-generation broadcast standard, there is a possibility that a video signal having a wider dynamic range may be transmitted as compared with the current broadcast standard.

JP 2009-251079 A

  However, at present, when the received video signal is displayed on the display unit, the displayed video is a reproduction of the video signal transmitted by the current broadcast standard, or compared with the current broadcast standard. A method for clearly indicating to the user whether the video is a video reproduced from a broadcast standard that can express a wide dynamic range is not defined.

  Therefore, when a user views a video having a different dynamic range for each program or playback video, the user may be confused with a device failure.

  An object of the present invention is to provide an image processing system, image processing apparatus, and image processing capable of notifying a user that the video signal can express a dynamic range wider than the dynamic range of the video signal transmitted in the current broadcast standard. Is to provide a method.

  The image processing apparatus according to the embodiment includes an extraction unit that extracts luminance information from the acquired video signal, and the dynamic range of the extracted luminance information is compared with a dynamic range of a video transmitted according to the first standard. Determining means for determining that a description indicating a high dynamic range of a video transmitted in accordance with the second standard is included; and when the luminance information includes the description, the determination result is stored in the recording unit. The recording means for recording, the judgment result recorded by the recording means is read, and the information corresponding to the video signal and the dynamic range of the video transmitted according to the second standard are identified Brightness information display means for displaying information on the display together.

FIG. 1 is a diagram illustrating an example of an image processing system according to the embodiment. FIG. 2 is a diagram illustrating a data structure of the EIT. FIG. 3A is a diagram showing a data structure of a short format event descriptor. FIG. 3B is a diagram illustrating a data structure of the short format event descriptor. FIG. 4A is a diagram showing a data structure of an extended format event descriptor. FIG. 4B is a diagram showing a data structure of the extended event descriptor. FIG. 5 is a diagram illustrating an example of the configuration of the image processing apparatus according to the embodiment. FIG. 6 is a flowchart illustrating processing performed by the image processing apparatus according to the embodiment. FIG. 7 is a flowchart illustrating processing performed by the image processing apparatus according to the embodiment. FIG. 8 is a diagram showing an example of a program list to which identification information is added. FIG. 9 is a diagram showing an example of a program column of a recorded program. FIG. 10 is a diagram showing a display example of the program description.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the present specification, “high dynamic range” and “wide dynamic range” are used interchangeably.

  FIG. 1 is a diagram illustrating an example of an image processing system according to the embodiment.

  The image processing system shown in FIG. 1 includes a signal transmitter and an image processing device 1 (signal receiver). The signal transmitter is, for example, a part of broadcasting equipment provided in a broadcasting station, and transmits a video signal such as a TV program. The image processing apparatus 1 receives a video signal (ground wave and satellite wave) broadcast by a signal transmitter via an antenna ANT. The signal transmitter transmits video luminance information and / or color gamut information together with the video signal, and the image processing device 1 (signal receiver) receives the video luminance information and / or color gamut from the received video signal. Read information.

  In the image processing system shown in FIG. 1, the broadcast signal received by the image reproduction device 1 is the luminance information and / or the standard stipulated by the Association of Radio Industries and Businesses, that is, ARIB (Association of Radio Industries and Businesses). Or at least color gamut information is included.

The luminance information includes the following information, for example.
(I) The video data is video data in which information on the high luminance side of a video having a high (wide) dynamic range is compressed.
(Ii) Decoding method for decoding compressed video data Information on the high luminance side of a video with a high dynamic range cannot be displayed on, for example, a display device having a backlight capable of expressing a 500 nit level video. This is information that can be displayed on a display device having a backlight capable of expressing a 1000 to 10,000 nit level video. Alternatively, the high dynamic range is an ultra-high-definition television standard (second standard) that is higher than the dynamic range of video transmitted according to the high-definition television standard (first standard). ) May be used to mean the dynamic range of video transmitted in accordance with

  In addition, the color gamut information is such that the color gamut of the transmitted video conforms to ARIB standard “BT.709” or defines a wider color gamut compared to “BT.709”. BT.2020 ”is included. “BT.709” conforms to the high definition television system studio standard (first standard), and “BT.2020” conforms to the ultra high definition television system studio standard (second standard).

  Details of the signal transmitter and the image processing apparatus 1 will be described below.

  The signal transmitter transmits a video signal in accordance with, for example, an MPEG2 systems or a scalable video transmission method. The video signal includes a TS (Transportstream) corresponding to the video. TS includes section format data in addition to video and audio packets. For example, SI (Service Information: program arrangement information) describing a TS distribution system, contents, schedule, or timing is a data structure including a plurality of fields in which information is described (or multiplexed). The SI includes an EIT (Event Information Table) indicating information related to the program such as program name, broadcast date and time, or broadcast content. A descriptor area exists in the EIT data structure, and the descriptor area includes a plurality of descriptors. The signal transmitter describes the luminance information and / or the color gamut information of the video in the descriptor included in the descriptor area.

FIG. 2 is a diagram illustrating a data structure of the EIT.
The structure of the EIT shown in FIG. 2 conforms to “ARIB_STD-B10“ Program arrangement information used for digital broadcasting ”version 5.1 (revised 2012.9.25)”, which is a standard defined by ARIB.

  In the EIT, information about the program such as a program name, broadcast date and time, or broadcast content is embedded. The descriptor area 101 included in the EIT described above (the section hatched in FIG. 2) can transmit different types of event information by using different descriptors. The descriptor area 101 is located in front of CRC (Cyclic Redundancy Check) in the EIT data structure (CRC is the last field of the table). The CRC is a 32-bit check code for checking whether data is correct.

  Among the plurality of descriptors that can describe event information, for example, luminance information and / or color gamut information is included in a short event descriptor or an extended event descriptor. Described. Details of the short format event descriptor and the extended format event descriptor will be described below. Note that a new descriptor can be used in addition to the short format event descriptor or the extended event descriptor to describe the luminance information and / or the color gamut information.

  The short format event descriptor is a descriptor that can describe a program name and a brief description of the program that are essential for the EIT, and the extended format event descriptor is a descriptor that can describe detailed information about the program. Therefore, the short format event descriptor and the extended format event descriptor are suitable for describing luminance information and / or color gamut information for each program.

  FIG. 3A and FIG. 3B are diagrams each showing a data structure of the short format event descriptor. FIG. 3A is a diagram conceptually showing a column in which fields forming a data structure are arranged.

  The role of each field of the short format event descriptor (short_event_descriptor) will be briefly described below.

・ Descriptor_tag (descriptor tag)
: Identify each descriptor. It is described in ISO / IEC 13818-1.
-Descriptor_length (descriptor length)
: Specifies the total byte length of the data part of the descriptor length that immediately follows.
・ ISO_639_language_code (language code)
: The language of the subsequent character information field is represented by a three-letter code.
・ Event_name_length (program name length)
: Indicates the byte length of the subsequent program name.
・ Event_name_char (program name)
: Indicates the program name.
・ Text_length (Program description length)
: Indicates the byte length of the subsequent program description.
・ Text_char (program description)
: Write a description of the program.
The dynamic range information is, for example, a character string indicating a wide dynamic range (for example, HDR or BT.2020) in the field of the program description field 'text_char' describing the description of the program among the fields forming the data structure. Is described (multiplexed) and transmitted. The image processing apparatus 1 (signal receiver) can read the code described in the field and know that the video is produced with a wide dynamic range (high luminance and / or wide color gamut).

  However, when the description of the color gamut information is multiplexed in the short format event descriptor, since the short format event descriptor is a descriptor that is indispensably prepared in the EIT, “description of program contents” and “ It is desirable to be able to clearly distinguish “a message with a wide dynamic range”. For example, HDR or BT. 2020 is% HDR% or% BT. It distinguishes by writing 2020%.

  FIG. 3B shows another display example of the data structure in which each field is described in a code format. In the example of FIG. 3B, a character string of “brightness: HDR%” is described in the field “text_char”, which indicates that the luminance dynamic range is wide.

  4A and 4B are diagrams showing the data structure of the extended event descriptor, respectively. FIG. 4A is a diagram conceptually showing a column in which fields forming a data structure are arranged.

  The contents of the descriptor (Extended_event_descriptor) will be briefly described below.

・ Descriptor_tag (descriptor tag)
: Identify each descriptor. It is described in ISO / IEC 13818-1.
-Descriptor_length (descriptor length)
: Specifies the total byte length of the data part of the descriptor length that immediately follows.
・ Descriptor_number (descriptor number)
: Number associated with information that cannot be contained in one descriptor.
-Last_descriptor_number (last descriptor number)
: Indicates the number of the last extended format event descriptor of the associated descriptor set.
・ ISO_639_language_code (language code)
: The language of the subsequent character information field is represented by a three-letter code.
・ Length_of_items (item length)
: Indicates the byte length of the subsequent item.
-Item_description_length (item name length)
: Indicates the byte length of the item name.
-Item_ description_char (item name)
: Specifies the character description of the item name.
-Item_length (item description length)
: Indicates the byte length of the item description.
-Item_char (item description)
: Specifies the character description of the item.
-Text_length (extended description length)
: Indicates the byte length of the extended description with no items.
-Text_char (extended description)
: Specifies a character description with no items.
The dynamic range information is, for example, a character string indicating a wide dynamic range (for example, HDR or BT) in a field of “item_char” that is an item description column or “text_char” that is an extension description column among fields forming a data structure. .2020, etc.) are described (multiplexed) and transmitted. The image processing apparatus 1 (signal receiver) can read the code described in the field and know that the video is produced with a wide dynamic range (high luminance and / or wide color gamut).

  Note that the extended event descriptor can optionally be attached to the short event descriptor. Unlike the case where dynamic range information is described in the short event descriptor, the extended event descriptor does not describe the program content and the dynamic range message in the same place. Therefore, it is possible to clearly distinguish “program content description” from “message having a wide color gamut”.

  FIG. 4B shows another display example of the data structure in which each field is described in a code format. In the example of FIG. 4B, a character string of “brightness: HDR%” is described in the field “item_char”, which indicates that the luminance dynamic range is wide.

  With the above method, the signal transmitter embeds luminance information and / or color gamut information in the TS and transmits a video signal.

  Next, an image processing apparatus 1 (signal receiver) according to the embodiment will be described with reference to the drawings. The image processing apparatus 1 reads luminance information and / or color gamut information described in the predetermined field embedded in the TS.

  FIG. 5 is a diagram illustrating an example of the configuration of the image processing apparatus 1 according to the embodiment.

  As shown in FIG. 5, the image processing apparatus 1 according to the first embodiment includes an antenna ANT, an input terminal 102, a tuner unit 103, external input terminals 104 to 107, a signal processing unit 108, a controller 110, an OSD (On − Screen Display) signal generation unit 111, graphic processing unit 112, video processing unit 113, audio processing unit 114, operation unit 115, reception unit 117, card holder 119, card interface 120, brightness sensor 121, LAN terminal 122, communication interface 123, a USB terminal 124, a USB interface 125, an HDMI (registered trademark) terminal 128, an HDMI interface 129, a video display unit 141 (display), a speaker 142, and a recording unit 151. Each of the modules is configured as a hardware circuit, and each module is connected by an electric signal line such as a dedicated line or a general-purpose communication bus.

  Further, the tuner unit 103 includes tuners 1031 to 1038 for terrestrial digital television broadcasting, and further includes a tuner for BS / CS digital television broadcasting. The terrestrial digital television broadcast tuners 1031 to 1038 can receive and display a program guide corresponding to terrestrial digital television broadcast. In addition, a program table corresponding to BS / CS digital television broadcasting can be received and displayed by a tuner for BS / CS digital television broadcasting.

  In the present embodiment, as shown in FIG. 5, a case where the image processing apparatus 1 includes a video display unit 141 and a speaker 142 will be described. However, the image processing apparatus 1 is not limited to such a configuration. For example, the image processing apparatus 1 may be configured not to include the video display unit 141 and the speaker 142. That is, the image processing apparatus 1 may be configured to be connected to the video display unit 141 and the speaker 142 via connection means such as HDMI.

  In the image processing apparatus 1 of the present embodiment, a case where the recording unit 151 is integrated with the controller 110 as illustrated in FIG. 5 will be described. However, the image processing apparatus 1 is not limited to such a configuration. For example, the recording unit 151 may be connected to the image processing apparatus 1 via connection means such as the USB terminal 124 and the USB interface 125. The recording unit 151 is, for example, a large capacity HDD (Hard Disk Drive), and many recorded programs are recorded.

  In the present embodiment, as illustrated in FIG. 5, a case where the image processing apparatus 1 includes a plurality of tuners will be described. However, the image processing apparatus 1 is not limited to such a configuration. For example, the image processing apparatus 1 may be configured not to include a tuner. In this case, for example, the image processing apparatus 1 may receive IP (Internet Protocol) broadcast via the LAN terminal 122 and reproduce or record a program corresponding to a plurality of IP broadcast channels. Good.

  Details of the image processing apparatus 1 will be described below.

  Terrestrial digital television broadcast signals (video signals) received by the antenna 101 for receiving terrestrial broadcasts are supplied to the tuners 1031 to 1038 via the input terminal 102, and the signal processing for terrestrial digital television broadcasts of the tuners 1031 to 1038 is performed. In this section, a digital television broadcast signal of a desired channel is selected. Then, the plurality of digital television broadcast signals selected by the tuners 1031 to 1038 are supplied to the signal processing unit 108 and separated into digital video signals and digital audio signals and demodulated. In addition, the signal processing unit 108 separates the section format data from the acquired video signal. The section format data includes the SI described above.

  Here, the signal processing unit 108 selectively performs predetermined digital signal processing on the digital video signal and audio signal, and outputs them to the graphic processing unit 112 and the audio processing unit 114.

  Further, for example, four input terminals 104 to 107 are connected to the signal processing unit 108. These input terminals 104 to 107 can input analog video signals and audio signals from the outside of the image processing apparatus 1, respectively.

  The signal processing unit 108 selectively digitizes analog video signals and audio signals respectively supplied from the input terminals 104 to 107, and performs predetermined digital processing on the digitized video signals and audio signals. After performing the signal processing, the signal is output to the graphic processing unit 112 and the audio processing unit 114.

  Among these, the graphic processing unit 112 has a function of superimposing and outputting the OSD signal generated by the OSD signal generation unit 111 on the digital video signal supplied from the signal processing unit 108. The graphic processing unit 112 can selectively output the output video signal of the signal processing unit 108 and the output OSD signal of the OSD signal generation unit 111.

  The digital video signal output from the graphic processing unit 112 is supplied to the video processing unit 113. The video signal processed by the video processing unit 113 is supplied to the video display unit 141. The video display unit 141 displays video based on the video signal.

  The audio processing unit 114 converts the input digital audio signal into an analog audio signal in a format that can be reproduced by the speaker 142, and then outputs the analog audio signal to the speaker 142 for audio reproduction.

  Here, in the image processing apparatus 1, all the operations including the above-described various reception operations are comprehensively controlled by the controller 110. The controller 110 includes a central processing unit (CPU) 1100 and the like, and receives operation information (various instructions) from the operation unit 115 or operation information (various instructions) transmitted from the remote controller 116 and received via the reception unit 117. Then, each module is controlled so that the operation content is reflected.

  The controller 110 also has a function of content playback control, and controls content playback in accordance with input operation information. Note that the receiving unit 117 and the remote controller 116 may transmit and receive operation signals by wireless communication using radio waves or the like, or may use infrared rays. Here, the content indicates, for example, a recorded program obtained by recording a received broadcast signal, a recorded content shot and recorded by a video camera, data stored in a server connected on the Internet, and the like.

  The controller 110 also stores a ROM (read only memory) 1101 that stores a control program executed by the CPU 1100, a RAM (random access memory) 1102 that provides a work area for the CPU 1100, and various setting information and control information. A non-volatile memory 1103. The ROM 1101, the RAM 1102, and the nonvolatile memory 1103 are electrically connected to the CPU 1100.

  The CPU 1100 extracts luminance information and / or color gamut information from the section format data separated by the signal processing unit 108. Specifically, the CPU 1100 multiplexes luminance information and / or color gamut information embedded in, for example, a short format event descriptor or an extended format event descriptor constituting an EIT data structure included in SI. Extracted fields.

  Further, the CPU 1100 transmits the extracted luminance information and / or color gamut information according to the second standard, which has a higher dynamic range than the dynamic range of the video transmitted according to the first standard. It is determined that a description indicating the dynamic range of the video is included. Specifically, the CPU 1100 determines whether, for example, the program description column, item description column, or extended description column in the extracted field includes the above description regarding the dynamic range.

  When the luminance information and / or color gamut information includes the description, the CPU 1100 records the determination result in the RAM 1102 or the nonvolatile memory 1103, for example. Here, the first standard means, for example, a high-definition television system studio standard, and the second standard means, for example, an ultra-high-definition television system studio standard.

  The controller 110 further includes luminance information display means 200. For example, the luminance information display unit 200 reads the determination result recorded by the CPU 1100 in response to a predetermined key operation of the remote controller 116, and transmits information corresponding to the video signal and the video signal in accordance with the second standard. Information that can be identified as the dynamic range of the video to be displayed is also displayed on the display. The information corresponding to the video signal is, for example, a program list, and the information that can identify the dynamic range is, for example, a specific landmark or a message. The luminance information display unit 200 may be a software module executed by the CPU 1100, but may be hardware.

  The controller 110 is connected via a card interface 120 to a card holder 119 into which a memory card 118 can be attached. As a result, the controller 110 can send and receive information via the card interface 120 and the memory card 118 mounted in the card holder 119.

  The controller 110 is connected to the LAN terminal 122 via the communication interface 123. The controller 110 can transmit / receive information to / from a LAN compatible device connected to the LAN terminal 122 via the communication interface 123. In this case, the controller 110 has a DHCP (dynamic host configuration protocol) server function, and assigns an IP address to the LAN compatible device connected to the LAN terminal 122 to control the LAN compatible device. The LAN terminal 122 may be connected to a wireless LAN handset or a wired LAN terminal. The image processing apparatus 1 can communicate with mobile terminals such as a server, a smartphone, and a tablet connected to a network via the communication interface 123.

  Further, the controller 110 is connected to the HDMI terminal 128 via the HDMI interface 129. As a result, the controller 110 can transmit / receive information to / from the HDMI compatible device connected to the HDMI terminal 128 via the HDMI interface 129.

  The controller 110 is connected to the USB terminal 124 via the USB interface 125. As a result, the controller 110 can transmit and receive information to and from the USB compatible device connected to the USB terminal 124 via the USB interface 125.

  Further, the controller 110 records the broadcast signal selected and descrambled by the tuner unit 103 on the recording unit 151 or an external storage device (HDD or the like) connected via the LAN terminal 122 or the USB terminal 124. It is also possible to control the recording operation.

  Further, the controller 110 is configured to receive a brightness detection signal from the brightness sensor 121. Accordingly, the controller 110 can control the brightness of the video and the backlight based on the brightness detection signal.

  Further, as described above, the tuner unit 103 included in the image processing apparatus 1 includes a plurality of tuners 1031 to 1038. Therefore, the image processing apparatus 1 can record a program of a plurality of channels at the same time. Further, the image processing apparatus 1 can simultaneously display a program of a plurality of channels. The image processing apparatus 1 also has a function of authenticating scrambled broadcasting.

  The above is a schematic description of the image processing apparatus 1. Below, the image processing apparatus 1 adopting the above configuration extracts luminance information from the acquired video signal, and accepts processing and instruction input until the determination result is recorded in the recording unit, and then corresponds to the video signal. The processing until the information to be displayed and the dynamic range identification information are displayed together on the display will be described. In the following processing, luminance information may be replaced with color gamut information.

  FIG. 6 is a flowchart illustrating processing performed by the image processing apparatus 1 until luminance information is extracted from an acquired video signal and a determination result is recorded in a recording unit. First, the signal processing unit 108 (separating means) separates the section format data from the acquired video signal (601). Subsequently, the CPU 1100 extracts luminance information from the separated section format data (602). Subsequently, the CPU 1100 determines whether there is a description that the dynamic range of the luminance of the received video is high based on the extracted luminance information (603). When there is a description that the received video has a high luminance dynamic range (603-YES), the CPU 1100 records that the luminance dynamic range is high in the RAM 1102 (604), and the image processing apparatus 1 returns to the standby state. . If there is no description that the dynamic range of the luminance of the received video is high (603-NO), the image processing apparatus 1 is in a standby state as it is. In the above flow, the dynamic range is determined for one video (program), but the same determination is performed for other video (program) embedded in the EIT.

  FIG. 7 is a flowchart showing a process from when an instruction input for displaying program information is received until information corresponding to the video signal and dynamic range identification information are displayed together on the display. First, the receiving unit 117 receives an instruction input for displaying program information (for example, a program list) (701). Subsequently, the luminance information display unit 200 reads out the determination result recorded in the RAM 1102, and among the programs displayed in the program list, a signal for adding identification information to a program column having a high luminance dynamic range is displayed as an OSD signal. The generating unit 111 generates (702) and returns to the standby state.

  FIG. 8 is a diagram showing an example of the program list 8 to which identification information regarding the dynamic range is added. In the program list 8 of FIG. 8, the first column C1 shows the broadcast time zone of the recorded program, and the second column C2 to the sixth column C6 show the programs 1 to 1 broadcasted by the broadcasting stations 1 to 5. 33 program columns are shown. In FIG. 8, in the program column 3, the program column 16, and the program column 24, identification information BM (a mark) indicating that the dynamic range of the luminance of the video is high is displayed. In the program column 11, identification information CM (a mark) indicating that the dynamic range of the video color is wide is displayed. In the program column 19, identification information BCM (a mark) indicating that the dynamic range of luminance and color of video is wide is displayed. In FIG. 8, the identification information of the dynamic range is a unique mark, but instead, in the program column, “video with high dynamic range of brightness”, “video with high dynamic range of color”, etc. A message may be added.

  FIG. 9 is a diagram showing an example of the program column 9 of the recorded program. The program column 9 includes an upper stage 90, a middle stage 92, and a lower stage 94. The upper row 90 displays a thumbnail image and a broadcasting station logo mark 96, the middle row 92 displays the broadcast date and time, and the lower row 94 displays the program title “our football” and the dynamic brightness of the program video. Identification information BM indicating that the range is high is shown.

  FIG. 10 is a diagram showing a display example of the program description. In the upper part, a title “Program Description” is displayed. On the lower right side of the title, a program summary, a broadcaster name, and program detailed information are described. On the lower left side of the title, together with the program title, broadcast date and time, program genre, copy restriction information, audio information, aspect ratio, etc., identification information BM (marker) indicating that the luminance dynamic range is wide is displayed.

  The above is the description of the configuration and signal processing according to the signal transmitter and the image processing apparatus 1 according to the embodiment. According to the image processing system including the signal transmitter and the image processing apparatus 1 employing the above configuration, the received video signal has a wider dynamic range than the dynamic range of the video signal transmitted according to the current broadcast standard. The user can be informed that the video signal can be expressed. As a result, even if the user views a video having a different dynamic range for each program or playback video, the user does not have to be confused with a device failure.

  The present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

  For example, hardware that performs the same function as the extraction unit and the determination unit described above may be provided in the controller 110 separately from the CPU 1100.

  Further, the image processing apparatus 1 can acquire a video (program) from a video supply source such as a video camera device or a portable terminal. The image processing apparatus 1 can acquire a video from a video supply source by, for example, a short-range wireless communication method or a wired transmission method. When the image supply source is a video camera device, the image processing device 1 acquires, for example, luminance information and / or color gamut information from Exif (Exchangeable Image File Format) and DCF (Design Rule for Camera File system). Can do. The image processing apparatus 1 can generate identification information similar to that described above based on the luminance information and / or color gamut information acquired from the video camera apparatus.

  DESCRIPTION OF SYMBOLS 1 ... Image processing apparatus, 102 ... Input terminal, 103 ... Tuner part, 104-107 ... External input terminal, 108 ... Signal processing part, 110 ... Controller, 111 ... OSD signal generation part, 112 ... Graphic processing part, 113 ... Image | video Processing unit 114 ... Audio processing unit 115 ... Operation unit 117 ... Reception unit 119 ... Card holder 120 ... Card interface 121 ... Brightness sensor 122 ... LAN terminal 123 ... Communication interface 124 ... USB terminal 125 ... USB interface, 128 ... HDMI terminal, 129 ... HDMI interface, 141 ... video display unit, 142 ... speaker, 151 ... first recording unit, 200 ... luminance information display unit

Claims (5)

TS (Transport Stream) indicates that the dynamic range of luminance is higher than the dynamic range of video transmitted according to the first standard, and that is the dynamic range of video transmitted according to the second standard. A signal transmitter for writing in a predetermined embedded field and transmitting;
An image processing system comprising: a signal receiver that reads luminance information described in the predetermined field. Extraction means for extracting luminance information from the acquired video signal;
The extracted luminance information includes a description indicating that the dynamic range is a dynamic range of a video transmitted according to the second standard, which is higher than a dynamic range of a video transmitted according to the first standard. A determination means for determining inclusion,
When the luminance information includes the description, a recording unit that records a determination result in a recording unit;
The determination result recorded by the recording means is read, and information corresponding to the video signal is combined with information capable of identifying that the video signal is a dynamic range of a video transmitted according to the second standard. A luminance information display means for displaying on the display.   The image processing apparatus according to claim 2, wherein the descriptor is an extended format event descriptor.   The image processing apparatus according to claim 2, wherein the determination unit determines based on a specific description described in the descriptor. Extract brightness information from the acquired video signal,
The extracted luminance information indicates that the dynamic range of the luminance is higher than the dynamic range of the video transmitted according to the first standard, and the dynamic range of the video transmitted according to the second standard. Determine that the description is included,
If the luminance information includes the description, record the determination result of the determination;
The recorded determination result is read out, and information corresponding to the video signal and information that can identify that the video signal is a dynamic range of a video transmitted according to the second standard are combined on the display. Image processing method to be displayed.

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