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1. 发明申请

WO2005088977A1 MOVING IMAGE CODING APPARATUS, MOVING IMAGE DECODING APPARATUS, CONTROL METHOD THEREFOR, COMPUTER PROGRAM, AND COMPUTER-READABLE STORAGE MEDIUM 审中-公开
标题翻译：移动图像编码装置，移动图像解码装置，其控制方法，计算机程序和计算机可读存储介质
公开(公告)号：WO2005088977A1
公开(公告)日：2005-09-22
申请号：PCT/JP2005/004851
申请日：2005-03-11
申请人： CANON KABUSHIKI KAISHA , KAJIWARA, Hiroshi , MAEDA, Mitsuru , SUZUKI, Masaki , KISHI, Hiroki
发明人： KAJIWARA, Hiroshi , MAEDA, Mitsuru , SUZUKI, Masaki , KISHI, Hiroki
IPC分类号： H04N7/30
CPC分类号： H04N19/64 , H04N19/169 , H04N19/17 , H04N19/184 , H04N19/46 , H04N19/61 , H04N19/63
摘要： This invention provides a technique of preventing errors from being gradually accumulated on the decoding side, while maintaining high scalability, even when a technique for transformation to subbands as a plurality of frequency components, like discrete wavelet transformation, is used for moving image coding. The image data of one input frame is decomposed into a plurality of subbands having different frequency components by a discrete wavelet transformation unit (101). A lower bitplane coding unit (109) codes, for each bitplane, predetermined lower bits of each coefficient data of a subband LL and the coefficient data of subbands other than the subband LL. The data of the upper bits of the subband LL is stored in a frame memory (105). A motion vector detection unit (107) detects a predicted value and motion vector on the basis of the decoded data of the subband LL in a preceding frame. A subtracter (103) obtains the difference between the detected predicted value and the current frame. A coefficient coding unit (104) codes the obtained difference. A motion vector coding unit (108) codes the motion vector. A multiplexing unit (111) multiplexes the code data obtained by the coding units (104, 108, 109).
摘要翻译：本发明提供了一种防止错误逐渐积累在解码侧的技术，同时保持高的可扩展性，即使将用于变换为多个频率分量的子带（如离散小波变换）的变换技术用于运动图像编码也是如此。通过离散小波变换单元（101）将一个输入帧的图像数据分解成具有不同频率分量的多个子带。低位平面编码单元（109）针对每个位平面编码子带LL的每个系数数据的预定低位和子带LL以外的子带的系数数据。子带LL的高位的数据被存储在帧存储器（105）中。运动矢量检测单元（107）根据前一帧中的子带LL的解码数据来检测预测值和运动矢量。减法器（103）获得检测到的预测值与当前帧之间的差。系数编码单元（104）对获得的差值进行编码。运动矢量编码单元（108）对运动矢量进行编码。复用单元（111）对由编码单元（104,108,109）获得的编码数据进行复用。

2. 发明申请

WO2006001490A1 MOVING IMAGE ENCODING APPARATUS AND MOVING IMAGE ENCODING METHOD 审中-公开
标题翻译：移动图像编码装置和移动图像编码方法
公开(公告)号：WO2006001490A1
公开(公告)日：2006-01-05
申请号：PCT/JP2005/012008
申请日：2005-06-23
申请人： CANON KABUSHIKI KAISHA , KISHI, Hiroki , KAJIWARA, Hiroshi
发明人： KISHI, Hiroki , KAJIWARA, Hiroshi
IPC分类号： H04N7/26
CPC分类号： H04N19/127 , H04N19/17 , H04N19/51 , H04N19/63 , H04N19/645 , H04N19/647
摘要： An encoding unit that encodes a moving image using inter-frame motion prediction segments each frame into a plurality of segmented regions (302), and determines a region of interest from a frame to be decoded (317). The encoding unit (310) retrieves a pixel set, from the region of interest of the previous or succeeding frame, having high correlation to each segmented region of the frame to be encoded, calculates the difference between the data of each segmented region and data of the retrieved pixel set, and outputs difference data (314). Then, the encoding unit encodes the difference data (303, 306).
摘要翻译：一种编码单元，其使用帧间运动预测对运动图像进行编码，将每帧分割成多个分割区域（302），并且从要解码的帧确定感兴趣区域（317）。编码单元（310）从先前或后续帧的感兴趣区域检索与要编码的帧的每个分段区域具有高相关性的像素集合，计算每个分段区域的数据与每个分割区域的数据之间的差异检索出的像素集合，并输出差分数据（314）。然后，编码单元编码差分数据（303,306）。

3. 发明公开

EP2190180A3 Image encoding apparatus and method of controlling the same 有权
标题翻译：图像编码装置及其控制方法
公开(公告)号：EP2190180A3
公开(公告)日：2012-02-15
申请号：EP09174845.9
申请日：2009-11-03
申请人： Canon Kabushiki Kaisha
发明人： SHIRAISHI, Yuki , KAJIWARA, Hiroshi , ITO, Naoki , TAMURA, Hirokazu
IPC分类号： H04N1/41 , H04N7/26
CPC分类号： H04N1/41 , H04N19/105 , H04N19/132 , H04N19/136 , H04N19/176 , H04N19/70
摘要： This invention generates efficient encoded data to restore original image data from reduced image data. An input unit inputs block data of 2 × 2 pixels from original image data. A converter generates reduced image data having a size smaller than the original image data by sampling one pixel data at a preset position in the input block data. A generator generates encoded data to restore three non-sampling target pixel data in each block data so as to restore the original image data from the reduced image data generated by the resolution converter. To do this, the generator determines whether all non-sampling target pixels in a block of interest are restorable from a sampling target pixel in the block of interest or from sampling target pixels in three blocks adjacent to the block of interest, and generates and outputs three kinds of additional information based on the determination result.

4. 发明公开

EP2190180A2 Image encoding apparatus and method of controlling the same 有权
标题翻译： Bildcodierungsvorrichtung und Steuerverfahrendafür
公开(公告)号：EP2190180A2
公开(公告)日：2010-05-26
申请号：EP09174845.9
申请日：2009-11-03
申请人： Canon Kabushiki Kaisha
发明人： SHIRAISHI, Yuki , KAJIWARA, Hiroshi , ITO, Naoki , TAMURA, Hirokazu
IPC分类号： H04N1/41 , H04N7/26
CPC分类号： H04N1/41 , H04N19/105 , H04N19/132 , H04N19/136 , H04N19/176 , H04N19/70
摘要： This invention generates efficient encoded data to restore original image data from reduced image data. An input unit inputs block data of 2 × 2 pixels from original image data. A converter generates reduced image data having a size smaller than the original image data by sampling one pixel data at a preset position in the input block data. A generator generates encoded data to restore three non-sampling target pixel data in each block data so as to restore the original image data from the reduced image data generated by the resolution converter. To do this, the generator determines whether all non-sampling target pixels in a block of interest are restorable from a sampling target pixel in the block of interest or from sampling target pixels in three blocks adjacent to the block of interest, and generates and outputs three kinds of additional information based on the determination result.
摘要翻译：本发明生成有效的编码数据，以从减少的图像数据恢复原始图像数据。输入单元从原始图像数据输入2×2像素的块数据。 A转换器通过对输入块数据中的预设位置处的一个像素数据进行采样来生成尺寸小于原始图像数据的缩小图像数据。发生器产生编码数据以恢复每个块数据中的三个非采样目标像素数据，以便从分辨率转换器产生的缩小图像数据恢复原始图像数据。为此，发生器确定感兴趣块中的所有非采样目标像素是否可以从感兴趣块中的采样目标像素或与感兴趣块相邻的三个块中的采样目标像素恢复，并且生成并输出基于确定结果的三种附加信息。

5. 发明授权

EP2190180B1 Image encoding apparatus and method of controlling the same 有权
标题翻译：图像编码装置及其控制方法
公开(公告)号：EP2190180B1
公开(公告)日：2014-01-08
申请号：EP09174845.9
申请日：2009-11-03
申请人： Canon Kabushiki Kaisha
发明人： SHIRAISHI, Yuki , KAJIWARA, Hiroshi , ITO, Naoki , TAMURA, Hirokazu
IPC分类号： H04N1/41 , H04N7/26
CPC分类号： H04N1/41 , H04N19/105 , H04N19/132 , H04N19/136 , H04N19/176 , H04N19/70

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