首页>
外国专利>
Image processing apparatus capable of properly determining density of a background portion
Image processing apparatus capable of properly determining density of a background portion
展开▼
机译:能够适当地确定背景部分的浓度的图像处理设备
展开▼
页面导航
摘要
著录项
相似文献
摘要
Density data produced by an image reading unit is input to a surface density detection unit, which detects a surface density by averaging density data of pixels within a predetermined density range. A period setting unit sets a period of sampling density data of pixels to be used for calculation of the surface density. A surface reference density generation unit generates a surface reference density by adding an offset to the detected surface density. A surface color elimination unit corrects density data of a pixel lower than the surface reference density to the white level to eliminate a surface color.
展开▼