Multiplexing method and recording medium

Abstract

There is provided a multiplexing method facilitating reproduction process and reducing uncomfortable feeling of a viewer from the image quality. The multiplexing method includes: a step (S100) for judging a clip to be encoded is to be encoded as a part of continuous reproduction unit configured in such a way that a plurality of encoded streams can be continuously reproduced; a step (S110) for deciding a common color space within the continuous reproduction unit for the clip to be encoded if the clip has bee judged to be encoded as a part of the continuous reproduction unit; a step (S112) for encoding the clip to be encoded according tot he decided color space so as to generate an encoded stream; and a step (S118) for packet-multiplexing the encoded stream.

Description

technical field

[0001] The present invention relates to a multiplexing method for multiplexing an encoded stream generated by encoding a moving image, and a recording medium for recording the multiplexed encoded stream including Information about color spaces. Background technique

[0002] According to the MPEG (Moving Picture Experts Group: Moving Picture Experts Group)-2 standard, an international standard for moving picture coding, information about the color space of moving picture signals (hereinafter referred to as color space information) can be described in the sequence display extension section. ) (Non-Patent Document 1). Also, in the MPEG-4 AVC standard, color space information can be described in a video usability information section in a sequence parameter set (Non-Patent Document 2). Here, the color space information represents, for example, color bases (colour_primaries), transfer characteristics (transfer_characteristics), and matrix coefficients (matrix_coe...

Examples

Embodiment 1

[0048] FIG. 1 is a block diagram showing the configuration of a multiplexing apparatus for realizing the multiplexing method according to the present embodiment.

[0049] The multiplexing device 100 according to the present embodiment, which includes a color space determination unit 101, a marker, and a color space determining unit 101, facilitates reproduction processing and reduces the sense of incongruity in image quality felt by the viewer during reproduction. The generating unit 102 , the encoding unit 103 , the system multiplexing unit 104 , the management information generating unit 105 , and the combining unit 106 .

[0050] The color space determination unit 101 determines a color space for each clip using, for example, a moving image sequence represented by the image data Vin, and outputs color space information Cs indicating the determined color space to the marker generation unit 102 and the encoding unit 103 . Here, the color space determination unit 101 determin...

Embodiment 2

[0087] The reproducing apparatus according to the present embodiment reads out and reproduces the recorded data D recorded in the recording medium by the multiplexing apparatus 100 of the first embodiment.

[0088] FIG. 5 is a block diagram showing the configuration of a reproduction apparatus that implements the reproduction method according to the present embodiment.

[0089] The reproduction device 200 according to this embodiment includes a decoding unit 201 , a first color conversion unit 202 , a second color conversion unit 203 , a control unit 204 , and switching units 205 and 206 .

[0090] The decoding unit 201 obtains the multiplexed data Md, and performs decoding processing corresponding to the encoding method of the data (for example, the MPEG-2 or MPEG-4 AVC method) for the multiplexed data Md. The data Md is obtained from the recorded data D read out from the recording medium. As a result, the decoding unit 201 generates and outputs the YUV decoded image data Vy...

technical field

[0001] The present invention relates to a multiplexing method for multiplexing an encoded stream generated by encoding a moving image, and a recording medium for recording the multiplexed encoded stream including Information about color spaces. Background technique

[0002] According to the MPEG (Moving Picture Experts Group: Moving Picture Experts Group)-2 standard, an international standard for moving picture coding, information about the color space of moving picture signals (hereinafter referred to as color space information) can be described in the sequence display extension section. ) (Non-Patent Document 1). Also, in the MPEG-4 AVC standard, color space information can be described in a video usability information section in a sequence parameter set (Non-Patent Document 2). Here, the color space information represents, for example, color bases (colour_primaries), transfer characteristics (transfer_characteristics), and matrix coefficients (matrix_coe...

Examples

Embodiment 1

[0048] FIG. 1 is a block diagram showing the configuration of a multiplexing apparatus for realizing the multiplexing method according to the present embodiment.

[0049] The multiplexing device 100 according to the present embodiment, which includes a color space determination unit 101, a marker, and a color space determining unit 101, facilitates reproduction processing and reduces the sense of incongruity in image quality felt by the viewer during reproduction. The generating unit 102 , the encoding unit 103 , the system multiplexing unit 104 , the management information generating unit 105 , and the combining unit 106 .

[0050] The color space determination unit 101 determines a color space for each clip using, for example, a moving image sequence represented by the image data Vin, and outputs color space information Cs indicating the determined color space to the marker generation unit 102 and the encoding unit 103 . Here, the color space determination unit 101 determin...

Embodiment 2

[0087] The reproducing apparatus according to the present embodiment reads out and reproduces the recorded data D recorded in the recording medium by the multiplexing apparatus 100 of the first embodiment.

[0088] FIG. 5 is a block diagram showing the configuration of a reproduction apparatus that implements the reproduction method according to the present embodiment.

[0089] The reproduction device 200 according to this embodiment includes a decoding unit 201 , a first color conversion unit 202 , a second color conversion unit 203 , a control unit 204 , and switching units 205 and 206 .

[0090] The decoding unit 201 obtains the multiplexed data Md, and performs decoding processing corresponding to the encoding method of the data (for example, the MPEG-2 or MPEG-4 AVC method) for the multiplexed data Md. The data Md is obtained from the recorded data D read out from the recording medium. As a result, the decoding unit 201 generates and outputs the YUV decoded image data Vy...

Images