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    • 7. 发明授权
    • Method and apparatus for adjusting contrast of image
    • 调整图像对比度的方法和装置
    • US07733536B2
    • 2010-06-08
    • US11595713
    • 2006-11-10
    • Tung-Lin HsiehYu-Wen HuangHsin-Hung LeeHsu-Hung Chen
    • Tung-Lin HsiehYu-Wen HuangHsin-Hung LeeHsu-Hung Chen
    • G03F3/08
    • H04N1/4072G06T5/009G06T5/40H04N5/20
    • An apparatus for processing an input image including M image units is provided. Each of the M image units respectively includes N pixels. Each of the pixels respectively has an original gray scale. The apparatus includes a converting module, a gain generating module, and a contrast enhancing module. The converting module is used for generating M luminances. Based on the original gray scales of the N pixels in the ith image unit among the M image units, the converting module generates the ith luminance among the M luminances. A maximum luminance and a minimum luminance are generated based on the M luminances. The gain generating module generates a contrast gain and a minimum gray scale based on the maximum luminance and the minimum luminance. Based on the contrast gain and the minimum gray scale, the contrast enhancing module adjusts the original gray scales of the pixels in the input image.
    • 提供一种用于处理包括M个图像单元的输入图像的装置。 每个M个图像单元分别包括N个像素。 每个像素分别具有原始灰度级。 该装置包括转换模块,增益产生模块和对比度增强模块。 转换模块用于产生M个亮度。 基于M个图像单元中的第i个图像单元中的N个像素的原始灰度级,转换模块在M个亮度之中生成第i个亮度。 基于M个亮度产生最大亮度和最小亮度。 增益产生模块基于最大亮度和最小亮度产生对比度增益和最小灰度。 基于对比度增益和最小灰度,对比度增强模块调整输入图像中的像素的原始灰度级。
    • 8. 发明申请
    • Method and apparatus for adjusting contrast of image
    • 调整图像对比度的方法和装置
    • US20070216972A1
    • 2007-09-20
    • US11595713
    • 2006-11-10
    • Tung-Lin HsiehYu-Wen HuangHsin-Hung LeeHsu-Hung Chen
    • Tung-Lin HsiehYu-Wen HuangHsin-Hung LeeHsu-Hung Chen
    • G03F3/08
    • H04N1/4072G06T5/009G06T5/40H04N5/20
    • An apparatus for processing an input image including M image units is provided. Each of the M image units respectively includes N pixels. Each of the pixels respectively has an original gray scale. The apparatus includes a converting module, a gain generating module, and a contrast enhancing module. The converting module is used for generating M luminances. Based on the original gray scales of the N pixels in the ith image unit among the M image units, the converting module generates the ith luminance among the M luminances. A maximum luminance and a minimum luminance are generated based on the M luminances. The gain generating module generates a contrast gain and a minimum gray scale based on the maximum luminance and the minimum luminance. Based on the contrast gain and the minimum gray scale, the contrast enhancing module adjusts the original gray scales of the pixels in the input image.
    • 提供一种用于处理包括M个图像单元的输入图像的装置。 每个M个图像单元分别包括N个像素。 每个像素分别具有原始灰度级。 该装置包括转换模块,增益产生模块和对比度增强模块。 转换模块用于产生M个亮度。 基于M个图像单元中的第i个图像单元中的N个像素的原始灰度级,转换模块在M个亮度之中生成第i个亮度。 基于M个亮度产生最大亮度和最小亮度。 增益产生模块基于最大亮度和最小亮度产生对比度增益和最小灰度。 基于对比度增益和最小灰度,对比度增强模块调整输入图像中的像素的原始灰度级。
    • 9. 发明授权
    • Image processing apparatus and method for reducing blocking effect and Gibbs effect
    • 图像处理装置和方法,用于减少阻挡效应和吉布斯效应
    • US08077999B2
    • 2011-12-13
    • US11896994
    • 2007-09-07
    • Tung-Lin HsiehYu-Wen HuangHsin-Hung Lee
    • Tung-Lin HsiehYu-Wen HuangHsin-Hung Lee
    • G06K9/40
    • H04N19/80H04N19/86
    • This invention discloses an image processing apparatus comprising a filter module, an edge detection module, and a processing module. According to where each pixel locates in an image block, the filter module is used to perform the smooth processing on each pixel to generate a second gray level corresponding to each pixel. The edge detection module is used to determine each pixel to be an edge pixel or a non-edge pixel according to the first gray level and the second gray level of each pixel. The processing module is used to calculate a third gray level of each edge pixel according to a weight, the first gray level, and the second gray level; to calculate a fourth gray level of each non-edge pixel according to the weight, the first gray level, and second gray level, and to output all of the third and fourth gray levels.
    • 本发明公开了一种图像处理装置,包括滤波器模块,边缘检测模块和处理模块。 根据每个像素位于图像块中的位置,滤波器模块用于对每个像素执行平滑处理,以产生对应于每个像素的第二灰度级。 边缘检测模块用于根据每个像素的第一灰度级和第二灰度级确定每个像素为边缘像素或非边缘像素。 处理模块用于根据权重,第一灰度级和第二灰度级来计算每个边缘像素的第三灰度级; 根据权重,第一灰度级和第二灰度级来计算每个非边缘像素的第四灰度级,并输出所有第三和第四灰度级。