专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

51. 发明申请

US20050053239A1 Digital watermarking which allows tampering to be detected on a block-specific basis 失效
标题翻译：数字水印，允许在区块特定的基础上检测篡改
公开(公告)号：US20050053239A1
公开(公告)日：2005-03-10
申请号：US10703509
申请日：2003-11-10
申请人： Yasuyuki Nomizu , Takanori Yano , Junichi Hara , Hiroyuki Sakuyama , Taku Kodama , Yasuyuki Shinkai , Toshio Miyazawa , Nekka Matsuura , Takayuki Nishimura
发明人： Yasuyuki Nomizu , Takanori Yano , Junichi Hara , Hiroyuki Sakuyama , Taku Kodama , Yasuyuki Shinkai , Toshio Miyazawa , Nekka Matsuura , Takayuki Nishimura
IPC分类号： G06F21/10 , G06T1/00 , G09C5/00 , H03M7/30 , H04N1/32 , H04N1/387 , H04N1/41 , H04N7/167 , H04N19/34 , H04N19/467 , H04N19/60 , H04N19/63 , H04N19/70
CPC分类号： H04N19/467 , G06T1/0057 , G06T2201/0051 , G06T2201/0052 , G06T2201/0061 , G06T2201/0083 , H04N1/32154 , H04N1/3217 , H04N1/32277 , H04N1/32283 , H04N21/44008 , H04N21/8358
摘要： An apparatus for generating codes includes a quantization unit which generates quantization coefficients by performing discrete wavelet transform with respect to each of tiles into which an image is divided, a block division unit which divides the quantization coefficients into blocks, a Hash conversion unit which performs Hash conversion based on the quantization coefficients of each of the blocks so as to produce a Hash value for each of the blocks, a digital watermark embedding unit which adjusts a parity of a quantization coefficient of interest equal to a parity of the Hash value of a block to which the quantization coefficient of interest belongs, and a coding unit which generates code sequence data by coding the quantization coefficients including the quantization coefficient whose parity is adjusted.
摘要翻译：一种用于生成代码的装置包括量化单元，该量化单元通过相对于划分图像的每个瓦片执行离散小波变换来生成量化系数;块分割单元，其将量化系数划分成块;哈希转换单元，其执行哈希基于每个块的量化系数进行转换，以产生每个块的哈希值;数字水印嵌入单元，其调整等于块的哈希值的奇偶校验的量化系数的奇偶校验以及编码单元，其通过对包括调整了奇偶性的量化系数的量化系数进行编码来生成代码序列数据。

52. 发明授权

US5406282A Data coding and decoding with improved efficiency 失效
标题翻译：数据编码和解码效率提高
公开(公告)号：US5406282A
公开(公告)日：1995-04-11
申请号：US966323
申请日：1992-10-26
申请人： Yasuyuki Nomizu
发明人： Yasuyuki Nomizu
IPC分类号： G06F5/00 , G06T9/00 , H03M7/02 , H03M7/40 , H03M7/42 , H04N1/411 , H04N1/413 , H03M7/30
CPC分类号： H03M7/42 , H03M7/4006
摘要： An appearance probability forecasting device forecasts an appearance probability that a symbol described by data will be a predetermined symbol. An initial value varying device varies an initial value of the appearance probability in accordance with the type of the data. A coding device codes the data, based on the initial value of the appearance probability, the symbols actually described by the data, and the appearance probability forecast by the appearance probability forecasting device.
摘要翻译：出现概率预测装置预测由数据描述的符号将是预定符号的出现概率。初始值变化装置根据数据的类型改变出现概率的初始值。编码装置根据出现概率的初始值，由数据实际描述的符号和出现概率预测装置的出现概率预测，对数据进行编码。

53. 发明授权

US5297220A Image processing system for image compression and decompression 失效
标题翻译：用于图像压缩和解压缩的图像处理系统
公开(公告)号：US5297220A
公开(公告)日：1994-03-22
申请号：US933655
申请日：1992-08-24
申请人： Yasuyuki Nomizu
发明人： Yasuyuki Nomizu
IPC分类号： H03M7/40 , G06T9/00 , H03M7/30 , H04N1/41 , H04N1/411 , H04N19/11 , H04N19/134 , H04N19/136 , H04N19/182 , H04N19/186 , H04N19/189 , H04N19/196 , H04N19/42 , H04N19/423 , H04N19/50 , H04N19/593 , H04N19/91 , G06K9/36
CPC分类号： H04N1/4105 , H04N1/41
摘要： An image processing system for image compression and decompression includes a template making part for producing a template from an image with respect to one target pixel in the image, the template containing a prescribed number of reference pixels selected from among pixels preceding the target pixel on a plurality of scanning lines including a current scanning line, the reference pixels having respective colors which have been detected, a storage part for storing the colors of the reference pixels in the template, and a state index detector for detecting a state index of the template from the colors of the reference pixels by referring to a state index table in which correspondence between values of the state index and states of colors of the reference pixels is pre-defined, so that the image is encoded into a compressed image and the compressed image is decoded into a reconstructed image in accordance with the thus detected state index of the template.
摘要翻译：一种用于图像压缩和解压缩的图像处理系统包括：模板制作部分，用于根据图像中的一个目标像素从图像生成模板，模板包含从目标像素之前的像素中选择的规定数量的参考像素包括当前扫描线的多条扫描线，已经检测到的各种颜色的参考像素，用于存储模板中的参考像素的颜色的存储部分，以及用于检测模板的状态索引的状态索引检测器参考像素的颜色通过参照状态索引表来确定，其中状态索引的值与参考像素的颜色状态之间的对应关系被预先定义，使得图像被编码成压缩图像，压缩图像是根据检测到的该模板的状态索引将其解码为重构图像。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式