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206 条记录 (耗时 0.02 秒)

    IMAGE ENCODING APPARATUS, IMAGE DECODING APPARATUS, IMAGE ENCODING METHOD, AND IMAGE DECODING METHOD
    111.
    发明公开
    IMAGE ENCODING APPARATUS, IMAGE DECODING APPARATUS, IMAGE ENCODING METHOD, AND IMAGE DECODING METHOD 审中-公开

    公开(公告)号：EP2658260A4

    公开(公告)日：2015-07-01

    申请号：EP11850478

    申请日：2011-12-21

    申请人： PANASONIC CORP

    发明人： KASHIWAGI YOSHIICHIRO ,  CHEN TAO

    IPC分类号： H04N19/30 ,  H04N19/597 ,  H04N19/98

    CPC分类号： H04N19/30 ,  H04N19/597 ,  H04N19/98

    摘要： To reduce the amount of data involved in coding a picture having a bit-depth higher than a bit-depth supported by an encoder, an image coding apparatus (100A) according to an aspect of the present invention includes: a down-converter (102A) which generates a base layer picture by down-converting a target picture to reduce the bit-depth of the target picture by a first value; a first encoder (111A) which codes the base layer picture, and generates a reconstructed picture by decoding the coded base layer picture; a subtractor (103A) which performs shift amount adjustment on the reconstructed picture to increase the bit-depth of the reconstructed picture by a second value, and generates, based on the reconstructed picture on which the adjustment has been performed and the target picture, an enhancement layer picture for enhancing the quality of the base layer picture; a second encoder (112A) which codes the enhancement layer picture; and an output unit (115) which outputs the coded base layer picture and the coded enhancement layer picture.

    STORAGE DEVICE, SIGNAL PROCESSOR, AND IMAGE SIGNAL PROCESSOR, AND THEIR METHODS
    112.
    发明公开
    STORAGE DEVICE, SIGNAL PROCESSOR, AND IMAGE SIGNAL PROCESSOR, AND THEIR METHODS 有权
    存储设备中，信号处理器和图像信号处理器及方法

    公开(公告)号：EP1526728A4

    公开(公告)日：2008-05-28

    申请号：EP03771418

    申请日：2003-07-30

    申请人： SONY CORP

    发明人： KONDO TETSUJIRO ,  YOSHIKAWA KAZUSHI ,  ISHIBASHI JUNICHI ,  WADA SEIJI

    IPC分类号： H04N19/423 ,  H04N19/50 ,  H04N19/51 ,  H04N19/98 ,  H04N5/91 ,  H04N7/32

    CPC分类号： H04N19/423 ,  H04N19/43 ,  H04N19/61 ,  H04N19/98

    摘要： A storage device, a signal processor, an image signal processor, and a signal processing method that can perform matching processing only with a low degree of computational complexity and accurately detect a motion vector. The device comprises an ME memory (13) in which stored is information including position information generated by converting features which include the pixel values in a block range the center of which is a pixel of interest into addresses according to information on a reference frame Fr stored in a second frame memory (12); and a matching unit (14) that reads information stored in the ME memory (13), using the feature of the pixel of interest included in information on the current frame Fc supplied from a first frame memory (11), as the feature address, calculates the distance between the pixel of interest within the current frame and the feature address (position coordinates) read from the ME memory (13), and determines differential coordinates which are based on the position information on the position whose distance is the minimum among a plurality of candidates, as the motion vector (Vx, Vy) of the pixel of interest.

    VIDEO ENCODING METHOD AND APPARATUS, AND VIDEO DECODING METHOD AND APPARATUS
    117.
    发明公开
    VIDEO ENCODING METHOD AND APPARATUS, AND VIDEO DECODING METHOD AND APPARATUS 审中-实审

    公开(公告)号：EP4391546A1

    公开(公告)日：2024-06-26

    申请号：EP22869122.6

    申请日：2022-09-08

    申请人： Huawei Technologies Co., Ltd.

    发明人： XU, Weiwei ,  ZHOU, Jiantong ,  YU, Quanhe ,  WEN, Jinsong ,  HU, Yutong

    IPC分类号： H04N19/98 ,  H04N19/30 ,  G06T5/00

    CPC分类号： H04N19/186 ,  H04N19/30 ,  H04N19/42 ,  H04N19/44 ,  H04N19/98

    摘要： Embodiments of this application provide a video encoding method, a video decoding method, and an apparatus, and relate to the field of image processing technologies. The video encoding apparatus may obtain source data, where the source data includes first high dynamic range HDR data and a first standard dynamic range SDR bitstream for same video data; map reconstructed data of the first SDR bitstream to second HDR data based on a correspondence between the reconstructed data of the first SDR bitstream and the first HDR data; determine a target residual value between the second HDR data and the first HDR data, where a bit width of the target residual value is less than or equal to a first bit width, and the first bit width is a data bit width for encoding a first SDR video into the first SDR bitstream; encode the correspondence and the target residual value, to determine preset data; and transmit the first SDR bitstream to which the preset data is added. In this application, good processing on an SDR video decoding device and an HDR video decoding device can be ensured based on the preset data and the SDR bitstream.