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公开(公告)号：KR101252600B1
公开(公告)日：2013-04-09
申请号：KR1020110145692
申请日：2011-12-29
Applicant: 서울대학교산학협력단
CPC classification number: H04N19/63 , G06T1/60 , G06T3/40 , G06T2207/20064 , G06T2207/30121
Abstract: PURPOSE: A wavelet image coding method is provided to code a wavelet sequence in a fixed order for increasing memory capacity, thereby effectively removing motion blurs. CONSTITUTION: A wavelet image coding method comprises the steps of: receiving inputs about the previous frame data in RGB signals; transforming the RGB signals to YCbCr signals; segmenting the YCbCr signals into multiple one-dimensional blocks; transforming the multiple one-dimensional blocks to wavelet coefficients through discrete wavelet transform; storing the wavelet coefficients in a buffer after merging the wavelet coefficients into one sequence; and coding the sequence into a bit stream by n-pixel.
Abstract translation: 目的：提供一种小波图像编码方法，以固定的顺序对小波序列进行编码，以提高存储容量，从而有效消除运动模糊。 构成：小波图像编码方法包括以下步骤：接收关于RGB信号中的先前帧数据的输入; 将RGB信号转换为YCbCr信号; 将YCbCr信号分割成多个一维块; 通过离散小波变换将多个一维块转换为小波系数; 将小波系数合并为一个序列后，将小波系数存储在缓冲器中; 并通过n像素将序列编码成比特流。
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公开(公告)号：KR101074771B1
公开(公告)日：2011-10-18
申请号：KR1020100007702
申请日：2010-01-28
Applicant: 서울대학교산학협력단
IPC: H04N7/24
Abstract: 본발명은웨이블렛변환(Wavelet transform)을통해이미지를압축하는블록기반병렬처리 SPIHT 알고리즘에관한것으로서, 본발명은비트평면을 4X4 블록단위로나눈후 세분단계(RP), 중요도생성단계(SGP), 정렬단계(SP), 최초세분단계(FRP)의네 가지단계를통해비트열을새로생성함으로써계산의복잡도가줄어들고, 코딩시 각단계들이한 주기에서병렬로실행되어처리속도가빠르면서도처리율이높은이미지압축알고리즘을제공하기위한것이다.
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公开(公告)号：KR1020110088000A
公开(公告)日：2011-08-03
申请号：KR1020100007702
申请日：2010-01-28
Applicant: 서울대학교산학협력단
IPC: H04N7/24
CPC classification number: H04N19/34 , H04N19/176 , H04N19/436 , H04N19/63
Abstract: PURPOSE: An image processing method using a block based parallel process SPIHT(Set Partitioning In Hierarchical Trees) is provided to compressing an image by dividing a bit plane into blocks. CONSTITUTION: If 4X4 blocks are significant, the 4X4 blocks are divided into 4 2X2 blocks(3). If the 4X4 blocks are not significant in a previous bit plane and significant in a current plane, the significance of the 4X4 block is generated(5). The queue bit alignment bit(13) is outputted(7). An absolute value bit is outputted to the 2X2 blocks. If the pixel is significant in the current bit plane, a code bit is successively outputted(9).
Abstract translation: 目的：提供使用基于块的并行处理SPIHT（分层树中的分组）的图像处理方法，以通过将位平面划分为块来压缩图像。 规定：如果4X4块有意义，则4X4块被分成4个2X2块（3）。 如果4X4块在前一个位平面中不重要且在当前平面中有效，则生成4X4块的重要性（5）。 输出队列位对齐位（13）（7）。 绝对值位输出到2X2块。 如果像素在当前位平面中有效，则连续输出码位（9）。
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