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    IMAGE DECODING DEVICE, IMAGE ENCODING DEVICE
    2.
    发明公开
    IMAGE DECODING DEVICE, IMAGE ENCODING DEVICE 审中-公开

    公开(公告)号：EP4404558A3

    公开(公告)日：2024-10-23

    申请号：EP24181143.9

    申请日：2012-06-22

    申请人： Sun Patent Trust

    发明人： SASAI, Hisao ,  NISHI, Takahiro ,  SHIBAHARA, Youji ,  SUGIO, Toshiyasu ,  TANIKAWA, Kyoko ,  MATSUNOBU, Toru

    IPC分类号： H04N19/463 ,  H04N19/196 ,  H04N19/176 ,  H04N19/157 ,  H04N19/13

    摘要： The image decoding method includes: determining a context for use in a current block, from among a plurality of contexts (S204); and performing arithmetic decoding on a bit sequence corresponding to the current block, using the determined context (S210), wherein in the determining (S204): the context is determined under a condition that control parameters of neighboring blocks of the current block are used, when the signal type is a first type, the neighboring blocks being a left block and an upper block of the current block (S206); and the context is determined under a condition that the control parameter of the upper block is not used, when the signal type is a second type (S207).

    ENCODING DEVICE AND ENCODING METHOD
    5.
    发明公开
    ENCODING DEVICE AND ENCODING METHOD 审中-实审

    公开(公告)号：EP4395317A2

    公开(公告)日：2024-07-03

    申请号：EP24175875.4

    申请日：2018-07-25

    申请人： Panasonic Intellectual Property Corporation of America

    发明人： KANOH, Ryuichi ,  ABE, Kiyofumi ,  TOMA, Tadamasa ,  NISHI, Takahiro

    IPC分类号： H04N19/157

    CPC分类号： H04N19/12 ,  H04N19/126 ,  H04N19/176 ,  H04N19/60 ,  H04N19/157

    摘要： An encoder (100) which encodes a current block to be encoded in an image includes: a transformer (106) which performs a primary transform from residuals of the current block to primary coefficients, determines whether to apply a secondary transform to the current block, and performs the secondary transform from the primary coefficients to secondary coefficients when the secondary transform is applied; a quantizer (108) which calculates quantized primary coefficients by performing a first quantization on the primary coefficients when a secondary transform is not applied, and calculates quantized secondary coefficients by performing a second quantization different from the first quantization on the secondary coefficients when the secondary transform is applied; and an entropy encoder (110) which generates an encoded bitstream by encoding either quantized primary coefficients or quantized secondary coefficients.

    IMAGE PROCESSING DEVICE AND METHOD
    10.
    发明公开
    IMAGE PROCESSING DEVICE AND METHOD 审中-实审

    公开(公告)号：EP4336833A3

    公开(公告)日：2024-05-15

    申请号：EP24150265.7

    申请日：2017-04-28

    申请人： Sony Group Corporation

    发明人： TSUKUBA, Takeshi

    IPC分类号： H04N19/124 ,  H04N19/132 ,  H04N19/157 ,  H04N19/176

    CPC分类号： H04N19/176 ,  H04N19/157 ,  H04N19/124 ,  H04N19/127

    摘要： An image processing apparatus comprising a control portion configured to skip bandwidth limitation for a secondary transformation coefficient obtained by subjecting a primary transformation coefficient to secondary transformation, based on primary transformation and secondary transformation being skipped, the primary transformation being transformation processing for a predictive residue as a difference between an image and a predictive image of the image and the secondary transformation being transformation processing for a primary transformation coefficient obtained by subjecting the predictive residue to the primary transformation, wherein the control portion is implemented via at least one processor.