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    • 1. 发明授权
    • Image processing apparatus, method, and storage medium for high speed compression processing
    • 用于高速压缩处理的图像处理装置,方法和存储介质
    • US08849021B2
    • 2014-09-30
    • US13177464
    • 2011-07-06
    • Daisuke Matsunaga
    • Daisuke Matsunaga
    • G06K9/36H04N7/12H04N11/02H04N11/04H04N1/64
    • H04N1/644
    • Image data is divided into blocks, each block has M×N pixels, the number of colors of each block undergoes reduction from M×N to each number of one to (M×N−1). Differences are acquired between pixel values for each block after color reduction, and pixel values for each block before first color reduction. A first table in which thresholds are associated with either the amount of data to be reduced or the amount of data to be remained, is acquired based on the acquired difference. A threshold at which the amount of data after compression drops to or below a target data amount is specified, based on the first table, and compressed data is generated based on image data after second color reduction using the specified threshold.
    • 图像数据被划分为块,每个块具有M×N个像素,每个块的颜色数量从M×N减少到每个数量为1(M×N-1)。 在减色后的每个块的像素值之间获取差异,以及在第一次降色前的每个块的像素值。 基于所获取的差异,获取阈值与要减少的数据量或要保留的数据量相关联的第一表。 基于第一表,指定压缩后的数据量下降到目标数据量以下的阈值,并且基于使用规定阈值的第二色彩还原之后的图像数据生成压缩数据。
    • 4. 发明申请
    • IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD
    • 图像处理装置和图像处理方法
    • US20100073732A1
    • 2010-03-25
    • US12561954
    • 2009-09-17
    • Daisuke Matsunaga
    • Daisuke Matsunaga
    • H04N1/40
    • H04N1/40068
    • An image processing apparatus includes a high-resolution converting unit configured to use image data of a plurality of frames of images in which positions read by a sensor are shifted by less than one pixel in a main scanning direction and/or a sub-scanning direction to generate image data having resolution higher than resolution of the sensor, an image region information generating unit configured to generate image region information corresponding to the image data read by the sensor, and an image region information high-resolution converting unit configured to convert a format of the image region information generated by the image region information generating unit and to perform a high-resolution conversion on the image region information using the high-resolution converting unit in such a way as to cause the image region information to correspond to the image data having the resolution higher than the resolution of the sensor.
    • 一种图像处理装置,包括高分辨率转换单元,被配置为使用多个图像的图像数据,其中由传感器读取的位置在主扫描方向和/或副扫描方向上偏移少于一个像素 生成分辨率高于传感器分辨率的图像数据;图像区域信息生成单元,被配置为生成与由传感器读取的图像数据相对应的图像区域信息;图像区域信息高分辨率转换单元,被配置为将格式 由图像区域信息生成单元生成的图像区域信息,并使用高分辨率转换单元对图像区域信息执行高分辨率转换,以使图像区域信息对应于图像数据 分辨率高于传感器的分辨率。
    • 8. 发明申请
    • IMAGE PROCESSING APPARATUS, COMPRESSION METHOD, AND STORAGE MEDIUM FOR STORING PROGRAMS THEREOF
    • 图像处理设备,压缩方法和存储程序存储介质
    • US20120014597A1
    • 2012-01-19
    • US13177464
    • 2011-07-06
    • Daisuke Matsunaga
    • Daisuke Matsunaga
    • G06K9/00
    • H04N1/644
    • Image data is divided into blocks, each block has M×N pixels, the number of colors of each block undergoes reduction from M×N to each number of one to (M×N−1). Differences between pixel values for each block after color reduction, and pixel values for each block before first color reduction. A first table in which thresholds are associated with either the amount of data to be reduced or the amount of data to be remained, is acquired based on the acquired difference. A threshold at which the amount of data after compression drops to or below a target data amount is specified, based on the first table, and compressed data is generated based on image data after second color reduction using the specified threshold.
    • 图像数据被划分为块,每个块具有M×N个像素,每个块的颜色数量从M×N减少到每个数量为1(M×N-1)。 减色后每个块的像素值之间的差异,以及第一次降色前每个块的像素值。 基于所获取的差异,获取阈值与要减少的数据量或要保留的数据量相关联的第一表。 基于第一表,指定压缩后的数据量下降到目标数据量以下的阈值,并且基于使用规定阈值的第二色彩还原之后的图像数据生成压缩数据。