公开(公告)号：EP1727351A4

公开(公告)日：2015-01-07

申请号：EP05710210

申请日：2005-02-15

Applicant: TOA CORP

Inventor： TABUCHI HIROSHI ,  TAGUCHI AKIRA ,  SHIMAUCHI KAZUHIRO ,  MOROHASHI TOSHIO

IPC: H04N19/625 ,  H04N1/41

CPC classification number: H04N19/59 ,  H04N19/117 ,  H04N19/124 ,  H04N19/14 ,  H04N19/17

Abstract: To improve the data compression ratio in the data compression/decompression method utilizing the down-sampling process. Image data in a DS area division unit (130) is divided into a plenty of DS areas and DS areas which are not important are converted into contracted data of the block size by down-sampling in a down-sampling unit (131). A relocation unit (132) allocates two or more contracted data in one DS area, inserts file data into the other portion in the DS area, and removes the DS area where no contracted data is allocated, thereby reducing the entire image size. The image data thus contracted is inputted into a JPEG encoder (14) and subjected to a DCT process and a quantization process for each block. When performing restoration, decompression is performed by the JPEG decoder and the original location is restored. As for the contracted data, interpolation is performed to restore the image data.

公开(公告)号：EP1727352A4

公开(公告)日：2010-11-24

申请号：EP05719139

申请日：2005-02-15

Applicant: TOA CORP

Inventor： MOROHASHI TOSHIO

IPC: H04N1/41 ,  H04N1/00 ,  H04N19/117 ,  H04N19/167 ,  H04N19/60 ,  H04N19/625 ,  H04N19/80 ,  H04N19/91

CPC classification number: H04N19/117 ,  H04N19/137 ,  H04N19/14 ,  H04N19/154 ,  H04N19/162 ,  H04N19/17 ,  H04N19/176 ,  H04N19/60 ,  H04N19/80 ,  H04N19/85

公开(公告)号：JP2006262390A

公开(公告)日：2006-09-28

申请号：JP2005080422

申请日：2005-03-18

Applicant: Toa Corp ,  ティーオーエー株式会社

Inventor： MOROHASHI TOSHIO

IPC: H04N19/50 ,  H03M7/36 ,  H04N19/119 ,  H04N19/132 ,  H04N19/139 ,  H04N19/167 ,  H04N19/513 ,  H04N19/59 ,  H04N19/625 ,  H04N19/91 ,  H04N19/93

Abstract: PROBLEM TO BE SOLVED: To improve a data compression rate in an image compression/decompression method using an image compressor such as an MPEG compressor for performing motion compensation prediction.
SOLUTION: Image data are divided into a plurality of DS regions by a DS region divider 130, and a DS region other than a region designated as a significant region is converted into reduced data by a down-sampling part 132. A re-arranging part 133 arranges a significant region and reduced data in an image region matched with the horizontal width of the significant region, and generates reduced image data. At that time, the significant region is arranged at the head of the image data. The image data reduced in this way are inputted to an MPEG encoder 32, and motion compensation prediction is carried out for every motion compensation region, and encoding processing is carried out for each MPEG block. At the time of restoration, decompression processing is carried out by the MPEG decoder, the original arrangement is restored based on the header information, and compensation processing is carried out for the reduced data, and the image data are restored.
COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提高使用MPEG压缩器等图像压缩器进行运动补偿预测的图像压缩/解压缩方法中的数据压缩率。 解决方案：图像数据由DS区域分割器130分成多个DS区域，并且除了被指定为有效区域的区域之外的DS区域由下采样部分132转换为缩减数据。 缩小部分133在与有效区域的水平宽度匹配的图像区域中布置有效区域和缩小的数据，并且生成缩小的图像数据。 那时，重要的区域被安排在图像数据的头部。 以这种方式减少的图像数据被输入到MPEG编码器32，并且对于每个运动补偿区域执行运动补偿预测，并且对于每个MPEG块执行编码处理。 在恢复时，通过MPEG解码器进行解压缩处理，基于标题信息恢复原始布置，并且对缩小数据执行补偿处理，并恢复图像数据。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2005269620A

公开(公告)日：2005-09-29

申请号：JP2005037264

申请日：2005-02-15

Applicant: Toa Corp ,  ティーオーエー株式会社

Inventor： TAGUCHI AKIRA ,  SHIMAUCHI KAZUHIRO ,  TABUCHI HIROSHI ,  MOROHASHI TOSHIO

IPC: H04N1/41 ,  H03M7/30

Abstract: PROBLEM TO BE SOLVED: To improve a data compression ratio in a data compressing/expanding method utilizing a down sampling process. SOLUTION: An image data is divided into many DS areas in a DS area dividing portion 130, and an unimportant DS area is converted into a reduced data consisting of a block size by the down sampling at a down sampling portion 131. Rearranging portion 132 arranges reduced data of 2 or more in one DS area, inserts a file data into other parts in the DS area, and reduces a size of the entire image by eliminating the DS area where the reduced data is not arranged. The image data reduced like this is input in a JPEG encoder 14, and a DCT processing and a quantization processing or the like each block are conducted. The image data is restored to its original arrangement at a restoration time after it is expansion-processed by a JPEG decoder, the reduced data is interpolation-processed, and the image data is restored. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：利用下采样处理来提高数据压缩/扩展方法中的数据压缩比。 解决方案：图像数据在DS区域划分部分130中被划分成许多DS区域，并且不重要的DS区域通过在下采样部分131处的下采样被转换成由块大小组成的简化数据。重新排列 部分132在一个DS区域中排列2或更多的缩减数据，将文件数据插入DS区域中的其他部分，并通过消除未排列缩减数据的DS区域来减小整个图像的大小。 这样减少的图像数据被输入到JPEG编码器14中，并且进行DCT处理和量化处理等每个块。 在由JPEG解码器进行扩展处理之后的恢复时间，将图像数据恢复到其原始布置，缩小的数据被内插处理，并且图像数据被恢复。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2001339686A

公开(公告)日：2001-12-07

申请号：JP2000158548

申请日：2000-05-29

Applicant: TOA CORP

Inventor： MOROHASHI TOSHIO

IPC: H04N5/92 ,  G11B20/10 ,  G11B27/02 ,  G11B27/034 ,  G11B27/10 ,  G11B27/34 ,  H04N5/765 ,  H04N5/915 ,  H04N7/18

Abstract: PROBLEM TO BE SOLVED: To reduce storage capacity, while the image data with the high importance is stored in order to become high resolution. SOLUTION: The video signal outputted from camera 1 is quantized in a quantization means 22 and stored in a first storage area region 31. From the first storage area 31, the image data stored before the fixed period is read out and supplied to a means for reducing an amount of information 23, and the amount of data is reduced, when a controller 21 receives a timing signal that is outputted from a timer 24 every fixed period. The image data reduced the amount of data is stored in a second storage area. Further, the controller erases from the first storage area 31 the data corresponding to the image data read out from the first storage area 31, and the image data stored after that time is kept to be stored in the first storage area 31. The old data which passed more than the fixed period within the image data stored in the second storage area may be also erased.