首页> 外国专利> A GENERAL PURPOSE IMAGE ENHANCEMENT ALGORITHM WHICH AUGMENTS THE VISUAL PERCEPTION OF DETAIL IN DIGITAL IMAGES

A GENERAL PURPOSE IMAGE ENHANCEMENT ALGORITHM WHICH AUGMENTS THE VISUAL PERCEPTION OF DETAIL IN DIGITAL IMAGES

机译:一种通用目的的图像增强算法,可增强对数字图像细节的视觉感知

摘要

A tone correction system, method and interface is described in which a digital image is initially filtered (10) to obtain a corresponding locally averaged value for each pixel value of the image. The image is optimally filtered using a cone-type filter having a small filter radius and which favorably weights the center pixel values of the radius. Shadow and highlight values are obtained from selected shadow and highlight functions, respectively, using the locally averaged values (11). A tone function is derived from each of the shadow and highlight values for each pixel (12). Each pixel value of the image is then remapped (13) according to its derived shadow and highlight tone functions. The tone corrected image can be reinteratively corrected by adjusting parameters of the shadow and highlight functions and remapping the image data until a desired image quality is achieved (14, 15).
机译:描述了一种色调校正系统,方法和接口,其中首先对数字图像进行滤波(10)以获得针对图像的每个像素值的对应的局部平均值。使用具有较小滤波器半径的圆锥型滤波器对图像进行最佳滤波,该圆锥型滤波器有利地加权半径的中心像素值。使用局部平均值(11)分别从选定的阴影和高光函数获得阴影和高光值。从每个像素(12)的阴影和高光值中的每个派生出色调函数。图像的每个像素值然后根据其派生的阴影和高光色调函数重新映射(13)。可以通过调整阴影和高光功能的参数并重新映射图像数据,直至达到所需的图像质量,来对色调校正后的图像进行交互性校正(14、15)。

著录项

  • 公开/公告号WO03013149A3

    专利类型

  • 公开/公告日2004-01-22

    原文格式PDF

  • 申请/专利权人 HEWLETT-PACKARD COMPANY;

    申请/专利号WO2002US23828

  • 发明设计人 MCGUIRE MICHAEL D.;SHAW RODNEY;

    申请日2002-07-25

  • 分类号G06T5/40;

  • 国家 WO

  • 入库时间 2022-08-21 23:00:37

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