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    • 7. 发明申请
    • IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND RECORDING MEDIUM
    • 图像处理装置,图像处理方法和记录介质
    • US20100246972A1
    • 2010-09-30
    • US12729483
    • 2010-03-23
    • Noriyuki KOYAMAMitsuhiro Hakaridani
    • Noriyuki KOYAMAMitsuhiro Hakaridani
    • G06K9/48
    • G06K9/3283
    • A reduced edge image generating unit divides into blocks an image indicated by image information inputted by an input device which inputs image information for expressing an image, calculates the luminance values of pixels in each of the divided blocks, and generates a 1/N edge image based on a difference between the luminance value of a block of interest and the luminance value of a block adjacent to the block of interest. An inclination detecting unit performs line scanning on the 1/N edge image, which has been generated by the reduced edge image generating unit, for every angle set beforehand, calculates the evaluation value based on the luminance of a pixel for every line on which the line scanning is performed, calculates the statistical value based on the evaluation value calculated for every line, and estimates the inclination of the image from the calculated statistical value.
    • 缩小边缘图像生成单元将由输入装置输入的图像信息所指示的图像分割为输入用于表示图像的图像信息,计算各分割块中的像素的亮度值,并生成1 / N边缘图像 基于感兴趣块的亮度值和与感兴趣块相邻的块的亮度值之间的差。 倾斜检测单元对于预先设定的每个角度对由缩小边缘图像生成单元生成的1 / N边缘图像执行行扫描,基于每行的像素的亮度来计算评估值, 执行线扫描,基于针对每行计算的评估值来计算统计值,并根据计算的统计值估计图像的倾斜度。