公开(公告)号：US20170155796A1

公开(公告)日：2017-06-01

申请号：US15359865

申请日：2016-11-23

Applicant: BROTHER KOGYO KABUSHIKI KAISHA

Inventor： Toshihiro WATANABE ,  Hiroyuki NAKAZAWA

IPC: H04N1/407 ,  H04N1/00

CPC classification number: H04N1/407 ,  H04N1/00748 ,  H04N2201/0081 ,  H04N2201/0094

Abstract: An image reading system includes a reading device, a first calibration unit, and a detection unit. The reading device is configured to read a white reference member to acquire white image data and configured to read an original document to acquire document image data. The first calibration unit is configured to calibrate shading of the document image data to generate first image data by performing converting a density value in the document image data to a gradation value that is proportional to the density value and falls within a predetermined range having a minimum gradation value, a maximum gradation value, and a target value less than the maximum gradation value. The density value equal to the corresponding density value is converted to the target value in the conversion. The detection unit is configured to detect pixels in the image data corresponding to an edge of the original document.

公开(公告)号：US20150131132A1

公开(公告)日：2015-05-14

申请号：US14521926

申请日：2014-10-23

Applicant: BROTHER KOGYO KABUSHIKI KAISHA

Inventor： Toshihiro WATANABE

IPC: H04N1/21 ,  H04N1/48 ,  H04N1/407 ,  H04N1/46

CPC classification number: H04N1/2195 ,  H04N1/4072 ,  H04N1/465 ,  H04N1/48 ,  H04N1/642 ,  H04N2201/0081 ,  H04N2201/218

Abstract: In an image reading apparatus, a control device controls a reading unit to start reading a document; stores first image data in a storage unit on a block-to-block basis to sequentially store each of a plurality of first blocks of data, the plurality of first blocks included in the first image data; performs, each time each first block of data is stored in the storage unit, a plurality of image processing on the first block of data to generate a second block of data including a plurality of types of data different from one another; and deletes one of the plurality of first blocks of data from the storage unit after completion of the plurality of image processing on the one of the plurality of first blocks of data before completion of the plurality of image processing on all of the plurality of first blocks of data.

Abstract translation: 在图像读取装置中，控制装置控制读取单元开始读取文档; 在块到块的基础上将第一图像数据存储在存储单元中，以顺序地存储多个第一数据块中的每一个，包括在第一图像数据中的多个第一块; 执行每当第一数据块被存储在存储单元中时，对第一数据块进行多个图像处理，以生成包括彼此不同的多种类型的数据的第二数据块; 并且在对所述多个第一块的所有多个第一块完成之前对所述多个第一数据块之一完成多个图像处理之后，从所述存储单元中删除所述多个第一数据块中的一个数据 数据的。

公开(公告)号：US20140347527A1

公开(公告)日：2014-11-27

申请号：US14284608

申请日：2014-05-22

Applicant: BROTHER KOGYO KABUSHIKI KAISHA

Inventor： Toshihiro WATANABE ,  Atsushi YOKOCHI

IPC: H04N9/64

CPC classification number: H04N9/77

Abstract: An image processing device includes an acquisition section, first conversion section, determination section, filtering section, and second conversion section. The acquisition section acquires first image data defined by a plurality of color components. The first conversion section converts, for each pixel data, the plurality of color components into converted pixel data defined by a luminance and a color difference. The determination section determines whether or not each converted pixel data is target pixel data having a black character attribute. The filtering section performs a filtering process on a luminance of each target pixel data using a filter coefficient to obtain processed pixel data defined by the luminance and the color difference. The filter coefficient enhances a difference in the luminance between the each target pixel data and neighboring pixel data. The second conversion section converts each processed pixel data into updated pixel data defined by the plurality of color components.

Abstract translation: 一种图像处理装置，包括获取部分，第一转换部分，确定部分，过滤部分和第二转换部分。 获取部分获取由多个颜色分量定义的第一图像数据。 第一转换部分对于每个像素数据将多个颜色分量转换成由亮度和色差定义的转换像素数据。 确定部分确定每个转换的像素数据是否是具有黑色字符属性的目标像素数据。 滤波部分使用滤波器系数对每个目标像素数据的亮度执行滤波处理，以获得由亮度和色差定义的经处理的像素数据。 滤波器系数增强了每个目标像素数据和相邻像素数据之间的亮度差。 第二转换部分将每个经处理的像素数据转换成由多个颜色分量定义的更新像素数据。