公开(公告)号：US08824786B2

公开(公告)日：2014-09-02

申请号：US13673339

申请日：2012-11-09

Applicant: Fuji Xerox Co., Ltd.

Inventor： Atsushi Itoh

IPC: G06K9/34 ,  H04N1/00 ,  G06T7/40 ,  G06T5/00 ,  G06K9/46

CPC classification number: G06T5/00 ,  G06K9/46 ,  G06T7/90 ,  G06T2207/10024 ,  G06T2207/20012 ,  H04N1/00

Abstract: An image processing apparatus includes a first extraction unit, a second extraction unit, a third extraction unit, a determination unit, a correction unit, and a color quantization unit. The first extraction unit extracts from an image a region and color of an information image. The second extraction unit extracts a color of a peripheral image surrounding the extracted region. The third extraction unit extracts information necessary for color quantization processing. The determination unit determines whether a color difference between the extracted color of the information image and the extracted color of the peripheral image falls within a predetermined range when color quantization processing is based on the extracted information. The correction unit corrects a representative color if it is determined that the color difference does not fall within the predetermined range. The color quantization unit performs color quantization processing on the image on the basis of the corrected representative color.

Abstract translation: 图像处理装置包括第一提取单元，第二提取单元，第三提取单元，确定单元，校正单元和颜色量化单元。 第一提取单元从图像中提取信息图像的区域和颜色。 第二提取单元提取围绕提取区域的周边图像的颜色。 第三提取单元提取颜色量化处理所需的信息。 当颜色量化处理基于提取的信息时，确定单元确定信息图像的提取颜色和周边图像的提取颜色之间的色差是否落入预定范围内。 如果确定色差不在预定范围内，则校正单元校正代表颜色。 颜色量化单元基于校正的代表颜色对图像执行颜色量化处理。

公开(公告)号：US08818087B2

公开(公告)日：2014-08-26

申请号：US13665171

申请日：2012-10-31

Applicant: Fuji Xerox Co., Ltd.

Inventor： Atsushi Itoh

IPC: G06K9/34

CPC classification number: G06T1/0028 ,  G06T2201/0202

Abstract: An image processing apparatus includes a representative color calculation unit, a color displacement calculation unit, and a similarity calculation unit. The representative color calculation unit calculates a representative color which is representative of colors in a first region having a predetermined size in an image. The color displacement calculation unit calculates, as a color displacement, a difference between the representative color calculated by the representative color calculation unit and a color in a target second region in the first region. The similarity calculation unit calculates similarity between the color displacement calculated by the color displacement calculation unit and a predetermined color displacement in an information image representing information embedded in the image.

Abstract translation: 图像处理装置包括代表颜色计算单元，颜色位移计算单元和相似度计算单元。 代表颜色计算单元计算代表在图像中具有预定尺寸的第一区域中的颜色的代表颜色。 颜色位移计算单元计算由代表颜色计算单元计算的代表颜色与第一区域中的目标第二区域中的颜色之间的颜色位移。 相似度计算单元计算由颜色位移计算单元计算的颜色位移与表示嵌入在图像中的信息的信息图像中的预定颜色位移之间的相似度。