Video decoding method and apparatus
    1.
    发明授权
    Video decoding method and apparatus 失效
    视频解码方法及装置

    公开(公告)号:US08553767B2

    公开(公告)日:2013-10-08

    申请号:US11688507

    申请日:2007-03-20

    IPC分类号: G06F21/00

    摘要: A video decoding apparatus includes a decoder to decode video encoded data using a predictive picture signal for a video signal, a compression device compressing the decoded picture signal, a first memory storing the decoded picture signal, a second memory storing the compressed picture signal, a decompression device decompressing the compressed picture signal read from the second memory, a selector selecting one of a decoded picture signal read from the first memory and a compressed/decompressed picture signal from the compression device as a reference picture signal according to at least one of a coding type of the video encoded data in picture unit and a prediction mode in block unit, and a motion compensator performing motion compensation on the reference picture signal to generate a predictive picture signal.

    摘要翻译: 视频解码装置包括使用视频信号的预测图像信号解码视频编码数据的解码器,压缩解码图像信号的压缩装置,存储解码图像信号的第一存储器,存储压缩图像信号的第二存储器, 对从第二存储器读取的压缩图像信号进行解压缩的解压缩装置,选择从第一存储器读取的解码图像信号和来自压缩装置的压缩/解压缩图像信号之一作为参考图像信号,根据以下各项中的至少一个: 图像单元中的视频编码数据的编码类型和块单位的预测模式,以及对参考图像信号执行运动补偿的运动补偿器,以生成预测图像信号。

    Digital watermark detection method and apparatus
    2.
    发明授权
    Digital watermark detection method and apparatus 失效
    数字水印检测方法及装置

    公开(公告)号:US07437565B2

    公开(公告)日:2008-10-14

    申请号:US11752644

    申请日:2007-05-23

    IPC分类号: G06K9/46

    摘要: A specific frequency component extraction unit extracts a specific frequency component signal from an input image signal. A phase controller controls the phase of the specific frequency component signal. A correlator computes the cross-correlation value of the phase-controlled specific frequency component signal and the input image signal. A watermark information estimation unit filters the cross-correlation value to detect watermark information embedded in the input image signal.

    摘要翻译: 特定频率分量提取单元从输入图像信号中提取特定频率分量信号。 相位控制器控制特定频率分量信号的相位。 相关器计算相位控制特定频率分量信号和输入图像信号的互相关值。 水印信息估计单元对互相关值进行滤波以检测输入图像信号中嵌入的水印信息。

    Motion vector detection method and device of the same
    7.
    发明申请
    Motion vector detection method and device of the same 有权
    运动矢量检测方法及装置相同

    公开(公告)号:US20070086525A1

    公开(公告)日:2007-04-19

    申请号:US11252244

    申请日:2005-10-18

    申请人: Wataru Asano

    发明人: Wataru Asano

    IPC分类号: H04N11/02 H04N11/04

    摘要: When a search is made for a motion vector of a moving image, a motion vector search desirable against a hard movement is devised to be made with a small processing amount, and a motion vector detection device includes a wide range motion vector search part, a narrow range motion vector search part, a motion vector prediction part, and a motion vector re-search part. A rough search is made at equal intervals on an inputted image while a corresponding position in the reference image is made the center; a fine search is made in the vicinity of a predicted value of the motion vector only at one stage in accordance with a search format of a gradient method; and from a result of both, motion vector detection is performed as a motion vector search start point by the gradient method.

    摘要翻译: 当对运动图像的运动矢量进行搜索时,设计出以较小的处理量进行针对硬移动的运动矢量搜索,并且运动矢量检测装置包括宽范围运动矢量搜索部分, 窄范围运动矢量搜索部分,运动矢量预测部分和运动矢量重新搜索部分。 在输入图像上以等间隔进行粗略搜索,同时使参考图像中的对应位置成为中心; 根据梯度法的搜索格式,仅在一个阶段在运动矢量的预测值附近进行精细搜索; 并且根据两者的结果,通过梯度方法执行运动矢量检测作为运动矢量搜索开始点。