DPCM CODEC WITH HIGHER RECONSTRUCTION QUALITY ON IMPORTANT GRAY LEVELS

    公开(公告)号:US20230033083A1

    公开(公告)日:2023-02-02

    申请号:US17962313

    申请日:2022-10-07

    摘要: A method of compressing a frame in an image compression and storage system includes mapping an original sample to a mapped sample based on a bit depth of the original sample and a maximum allowed error, determining a residue of the mapped sample based on a mapped previous reconstructed sample, applying a modulo addition to the residue to generate a biased residue, quantizing the biased residue based on the maximum allowed error to generate a quantized biased residue, and encoding a value corresponding to the quantized biased residue to generate an encoded value.

    VIDEO DECODING DEVICE AND VIDEO DECODING METHOD

    公开(公告)号:US20210344898A1

    公开(公告)日:2021-11-04

    申请号:US17377880

    申请日:2021-07-16

    摘要: A video decoding device, in the case where a video of the progressive format is inputted, processes a frame as a picture, in the case where a video of the interlace format is inputted, processes a field as a picture. A video decoding device performs display control corresponding to a format of the both video by analyzing display control information in display control information analyzer. The display control information includes sequence unit display control information which is commonly used in a display process of all pictures that belong to a sequence to be decoded and picture unit display control information which is individually used in a display process of a picture to be decoded. A second code string analyzer acquires each of the sequence unit display control information and the picture unit display control information from an extended information area in units of pictures.

    VIDEO DECODING DEVICE AND VIDEO DECODING METHOD

    公开(公告)号:US20200244952A1

    公开(公告)日:2020-07-30

    申请号:US16845322

    申请日:2020-04-10

    摘要: A video decoding device, in the case where a video of the progressive format is inputted, processes a frame as a picture, in the case where a video of the interlace format is inputted, processes a field as a picture. A video decoding device performs display control corresponding to a format of the both video by analyzing display control information in display control information analyzer. The display control information includes sequence unit display control information which is commonly used in a display process of all pictures that belong to a sequence to be decoded and picture unit display control information which is individually used in a display process of a picture to be decoded. A second code string analyzer acquires each of the sequence unit display control information and the picture unit display control information from an extended information area in units of pictures.