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    • 32. 发明授权
    • Method and apparatus for scanning image data
    • 用于扫描图像数据的方法和装置
    • US5583657A
    • 1996-12-10
    • US11546
    • 1993-02-01
    • Je-Chang Jeong
    • Je-Chang Jeong
    • G06T9/00H04N7/26H04N7/30H04N1/415H04N7/12
    • H04N19/14H04N19/129H04N19/172
    • The present invention relates to a method of and an apparatus for scanning an N.times.N image signal in a particular direction depending upon an energy distribution of the two-dimensional data. The invention involves scanning image signal transform coefficients of an N.times.N block using a slope determined on the basis of the energy distribution pattern, the blocks being defined by transforming an input image signal of a time domain to signals of a frequency domain, compressing and transferring the scanned transform coefficients, restoring the compressed transform coefficient data and rearranging the restored coefficient data into original image data of N.times.N blocks by scanning them in conformance with the energy distribution pattern.
    • 本发明涉及根据二维数据的能量分布沿特定方向扫描N×N图像信号的方法和装置。 本发明涉及使用基于能量分布模式确定的斜率来扫描N×N块的图像信号变换系数,所述块通过将时域的输入图像信号变换为频域的信号来定义,压缩和传送 扫描变换系数,恢复压缩变换系数数据,并将恢复的系数数据重新排列成符合能量分布模式的N×N块的原始图像数据。
    • 33. 发明授权
    • Apparatus and method for encoding/decoding data including the
suppression of blocking artifacts
    • 用于对包括抑制块伪影的数据进行编码/解码的装置和方法
    • US5384849A
    • 1995-01-24
    • US062599
    • 1993-05-18
    • Je-chang Jeong
    • Je-chang Jeong
    • H03M7/40G08C19/28H03M7/28H03M7/30H04N7/12H04N19/60H04N19/86H04N1/415
    • H04N19/86H04N19/117H04N19/154H04N19/172H04N19/176H04N19/46H04N19/527H04N19/60H04N19/61H04N19/30
    • A method and apparatus for removing blocking artifacts in an encoder/decoder system. The encoder includes a delay device for delaying original input frame data, a decoder for decoding the compressed data and outputting the restored frame data, and a blocking artifact measurer which receives the restored frame data and the original frame data, and measures the degree of blocking artifact using the above two frame data so as to generate a predetermined post-processing parameter. The post-processing parameter is transmitted to the receiver/decoder together with the encoded data. The decoder includes a receiver for receiving the encoded data and the post-processing parameter, a second decoder for decoding and restoring the encoded transmission data, and a filter for adaptively filtering the restored data output from the second decoder according to the post-processing parameter. As a result, the blocking artifact of the block boundary is removed from the encoded data such that a user does not notice any reduction in the picture quality.
    • 一种用于在编码器/解码器系统中去除块状伪影的方法和装置。 编码器包括用于延迟原始输入帧数据的延迟装置,用于解码压缩数据并输出恢复的帧数据的解码器,以及接收恢复的帧数据和原始帧数据并且测量阻塞程度的块伪影测量器 使用上述两帧数据的伪影,以产生预定的后处理参数。 后处理参数与编码数据一起被发送到接收器/解码器。 解码器包括用于接收编码数据和后处理参数的接收机,用于解码和恢复编码的传输数据的第二解码器,以及用于根据后处理参数自适应地过滤从第二解码器输出的恢复数据的滤波器 。 结果,从编码数据中去除了块边界的块伪影,使得用户没有注意到图像质量的任何降低。