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    • 2. 发明申请
    • IMAGE COMPRESSING METHOD, IMAGE COMPRESSING APPARATUS AND IMAGE FORMING APPARATUS
    • 图像压缩方法,图像压缩装置和图像形成装置
    • US20110001994A1
    • 2011-01-06
    • US12827930
    • 2010-06-30
    • Toyohisa MATSUDA
    • Toyohisa MATSUDA
    • G06K9/36G06F15/00
    • G03G15/011G03G15/043G03G15/50G06T9/00H04N1/642H04N19/17H04N19/176
    • A foreground layer generating unit generates a foreground layer on the basis of a foreground mask generated by a foreground mask generating unit and an original image. A binary image processing unit generates N binary images corresponding to N kinds of foreground identifiers on the basis of the foreground layer, and sets a plurality of tiles for each of the N binary images. Further, the binary image processing unit determines whether or not adjacent tiles are to be merged, and then sets tiles obtained by merging tiles determined to be merged, and leaving tiles determined not to be merged as they are. An image compressing unit cuts out rectangular regions from the individual set tiles by employing the binary images, and compresses the rectangular regions.
    • 前景层生成单元基于由前景掩模生成单元和原始图像生成的前景掩码来生成前景层。 二进制图像处理单元基于前景层生成与N种前景标识符对应的N个二进制图像,并且为N个二进制图像中的每一个设置多个瓦片。 此外,二进制图像处理单元确定是否合并相邻的图块,然后设置通过合并确定为被合并的图块而获得的图块,并且确定不被合并的图块。 图像压缩单元通过采用二进制图像从单独的瓦片切出矩形区域,并压缩矩形区域。
    • 3. 发明申请
    • IMAGE PROCESSING APPARATUS, IMAGE FORMING APPARATUS, IMAGE PROCESSING METHOD, COMPUTER PROGRAM AND COMPUTER-READABLE MEDIUM
    • 图像处理装置,图像形成装置,图像处理方法,计算机程序和计算机可读介质
    • US20120134581A1
    • 2012-05-31
    • US13304046
    • 2011-11-23
    • Toyohisa MATSUDA
    • Toyohisa MATSUDA
    • G06K9/34
    • H04N1/41H04N1/56
    • The compression processing unit 30 of the image processing apparatus makes the color conversion process section 50 to the layout analysis processing section 53 extract the text string region, and makes the foreground layer generating section 54 extract the foreground pixel from the text string region to generate the foreground layer. The line detection process section 52 extracts the line art from the input image data, and removes the pixel block configuring the line art from the foreground pixel-block mask generated by the foreground extracting section 51. The layout analysis processing section 53 estimates the direction of the text string in accordance with the distance of the foreground regions and the number of connected foreground regions, and merges the foreground regions connected in the estimated direction, to extract the text string region.
    • 图像处理装置的压缩处理单元30使布局分析处理部分53的颜色转换处理部分50提取文本串区域,并且使得前景层生成部分54从文本串区域中提取前景像素,以生成 前景层。 线检测处理部分52从输入图像数据中提取线条图,并且从由前景提取部分51生成的前景像素块掩模中去除配置线条图像的像素块。布局分析处理部分53估计方向 根据前景区域的距离和连接的前景区域的数量的文本串,并且合并在估计方向上连接的前景区域,以提取文本串区域。
    • 4. 发明申请
    • IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD AND RECORDING MEDIUM
    • 图像处理设备,图像处理方法和记录介质
    • US20100303360A1
    • 2010-12-02
    • US12787999
    • 2010-05-26
    • Toyohisa MATSUDA
    • Toyohisa MATSUDA
    • G06K9/46
    • H04N1/3871G06T7/11G06T7/187G06T2207/10008G06T2207/10024H04N1/40062
    • A foreground pixel block extraction process section divides input image data into a plurality of pixel blocks, and classifies each pixel block as a uniform density pixel block or foreground pixel block. By performing above process, the foreground pixel block extraction process section extracts foreground pixel blocks. A foreground color calculation process section calculates the foreground colors from the extracted foreground pixel blocks as color information. A labeling process section extracts connected foreground pixel block areas as foreground pixel areas by giving the same label to a plurality of adjacent foreground pixel blocks. From these processing results, a foreground pixel extraction process section calculates a representative color for each foreground pixel area, and extracts pixels having pixel values close to the representative color as foreground pixels.
    • 前景像素块提取处理部分将输入图像数据分割为多个像素块,并且将每个像素块分类为均匀浓度像素块或前景像素块。 通过执行上述处理,前景像素块提取处理部分提取前景像素块。 前景颜色计算处理部分从提取的前景像素块中计算出前景颜色作为颜色信息。 标注处理部分通过给多个相邻的前景像素块赋予相同的标签来将连接的前景像素块区域提取为前景像素区域。 根据这些处理结果,前景像素提取处理部分计算每个前景像素区域的代表颜色,并提取具有接近代表颜色的像素值的像素作为前景像素。