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    Image recording device, image recording method and program
    97.
    发明公开
    Image recording device, image recording method and program 审中-公开
    Bildaufzeichnungsvorrichtung，Bildaufzeichnungsverfahren und Programm

    公开(公告)号：EP2282548A2

    公开(公告)日：2011-02-09

    申请号：EP10169626.8

    申请日：2010-07-15

    申请人： Sony Corporation

    发明人： Hamada, Toshimichi ,  Ota, Masashi ,  Ikeda, Kiyoshi ,  Naganuma, Hiromasa ,  Hirota, Yoichi

    IPC分类号： H04N9/804 ,  H04N5/85

    CPC分类号： H04N5/7755 ,  H04N5/782 ,  H04N5/85 ,  H04N9/8042 ,  H04N19/117 ,  H04N19/124 ,  H04N19/146 ,  H04N19/172

    摘要： There is provided an image recording device, including: a highly-gradating unit for highly-gradating an input image having a first gradation depth, thereby generating a high gradation image having a second gradation depth higher than the first gradation depth; an image quantizing unit for quantizing the high gradation image generated by the highly-gradating unit such that a quantization error is modulated into a band with relatively low sensitivity of human visual characteristics, thereby generating a recording target image having a third gradation depth lower than the second gradation depth; an encoding unit for encoding the recording target image generated by the quantizing unit; and a recording unit for recording the recording target image encoded by the encoding unit in a recording medium.

    摘要翻译： 提供了一种图像记录装置，包括：高分级单元，用于对具有第一灰度深度的输入图像进行高度渐变，从而生成具有高于第一灰度深度的第二灰度深度的高灰度图像; 图像量化单元，用于量化由高分级单元产生的高灰度级图像，使得量化误差被调制成具有相对低的人类视觉特性的灵敏度的频带，从而生成具有比第三灰度深度低的 第二层次深度; 编码单元，用于对由量化单元生成的记录目标图像进行编码; 以及记录单元，用于将由编码单元编码的记录目标图像记录在记录介质中。

    VIDEO ENCODING AMOUNT CONTROL METHOD, VIDEO ENCODING AMOUNT CONTROL DEVICE, VIDEO ENCODING AMOUNT CONTROL PROGRAM, AND COMPUTER READABLE RECORDING MEDIUM ON WHICH SAID PROGRAM IS RECORDED
    100.
    发明公开
    VIDEO ENCODING AMOUNT CONTROL METHOD, VIDEO ENCODING AMOUNT CONTROL DEVICE, VIDEO ENCODING AMOUNT CONTROL PROGRAM, AND COMPUTER READABLE RECORDING MEDIUM ON WHICH SAID PROGRAM IS RECORDED 有权
    方法用于控制视频编码量控制装置，节目的视频编码量用于控制视频编码和QUANTITY计算机可读记录介质的事实记录的节目

    公开(公告)号：EP2265025A1

    公开(公告)日：2010-12-22

    申请号：EP09758343.9

    申请日：2009-06-03

    申请人： Nippon Telegraph and Telephone Corporation

    发明人： TANIDA Ryuichi ,  SHIMIZU Atsushi

    IPC分类号： H04N7/26

    CPC分类号： H04N19/146 ,  H04N19/149

    摘要： A video bitrate control method and apparatus that control a generated bitrate of a picture to be encoded, based on an initial value of an allocation bitrate that is previously given to each picture are provided, wherein a difference between an allocation bitrate and an actually generated bitrate of a picture that has been encoded is obtained as an error bitrate, one of a maximum value and a minimum value of the allocation bitrate is selected for a plurality of subsequent pictures, as an allowable correction range, based on the sign of the error bitrate, the maximum value and the minimum value of the allocation bitrate being calculated based on the initial value of the allocation bitrate and a previously given constant, a difference between the allowable correction range and the allocation bitrate is obtained for the plurality of pictures, as an allowable variation bitrate, the ratio of the sum of allowable variation bitrates and the error bitrate is obtained as an update rate, a variation bitrate for the allocation bitrate is calculated for the plurality of pictures based on the allowable variation bitrate and the update rate, and the allocation bitrate of each of the plurality of pictures is updated based on the variation bitrate.