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公开(公告)号：US20060182361A1
公开(公告)日：2006-08-17
申请号：US11059935
申请日：2005-02-17
申请人： Raymond Ptucha , William Fintel , Andrew Gallagher , Edward Gindele , Jeffrey Snyder , Kevin Spaulding
发明人： Raymond Ptucha , William Fintel , Andrew Gallagher , Edward Gindele , Jeffrey Snyder , Kevin Spaulding
IPC分类号： G06K9/40
CPC分类号： G06T5/40 , G06T5/009 , G06T2207/20016 , H04N1/60
摘要： In an image enhancement method, a regular enhancement function and an aggressiveness parameter are computed using characteristics of a digital image. A first, relatively slow enhancement algorithm is applied to the digital image using the regular enhancement function, when an aggressiveness parameter is in a predetermined high range. A second, relatively fast enhancement algorithm is applied to the digital image using the regular enhancement function, when an aggressiveness parameter is in a predetermined low range. A modified enhancement function is calculated using characteristics of the digital image and is used with a second, relatively fast enhancement algorithm, when the aggressiveness parameter is in a predetermined medium range.
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2.发明申请Constructing extended color gamut digital images from limited color gamut digital images 有权从有限色域数字图像构建扩展色域数字图像公开(公告)号：US20050152597A1
公开(公告)日：2005-07-14
申请号：US10757048
申请日：2004-01-14
CPC分类号： H04N1/6058
摘要： A method for reconstructing an extended color gamut digital image from a limited color gamut digital image includes transforming the limited color gamut digital image in the particular limited color gamut color space to a reference color space forming a limited color gamut digital image in a reference color space; providing a modified inverse color adjustment function which, when such function operates on the limited color gamut digital image in the reference color space, produces the reconstructed extended color gamut digital image having reduced highlight color saturation for highlight color values when compared with corresponding color values of the initial extended color gamut image; and operating on the limited color gamut digital image in the reference color space with the modified inverse color adjustment function to form the reconstructed extended color gamut digital image having reduced levels of color contouring and quantization artifacts.
摘要翻译： 用于从有限色域数字图像重建扩展色域数字图像的方法包括将特定有限色域颜色空间中的有限色域数字图像变换为在参考色彩空间中形成有限色域数字图像的参考颜色空间 ; 提供修改的反色调整功能，当这种功能对参考色彩空间中的有限色域数字图像进行操作时，产生具有降低的高亮度色彩饱和度的重构的扩展色域数字图像， 初始扩展色域图像; 并且利用修改的反色调整功能在参考颜色空间中的有限色域数字图像上进行操作，以形成具有降低的颜色轮廓和量化伪像水平的重建的扩展色域数字图像。
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公开(公告)号：US20050152612A1
公开(公告)日：2005-07-14
申请号：US10757055
申请日：2004-01-14
CPC分类号： G06T5/00 , G06T2207/10024 , H04N1/603
摘要： A method is described for applying an image enhancement algorithm to input digital images represented in different input color spaces including identifying the input color space of an input digital image, and applying a color space transformation to the input digital image represented in the input color space to form a corresponding input digital image in a reference color space. The method also includes adjusting one or more algorithm parameters of the image enhancement algorithm in response to the identified input color space, and applying the image enhancement algorithm with the one or more adjusted algorithm parameters to the corresponding input digital image in the reference color space to produce an enhanced digital image in the reference color space.
摘要翻译： 描述了一种用于应用图像增强算法来输入在不同输入颜色空间中表示的数字图像的方法，包括识别输入数字图像的输入颜色空间，以及将颜色空间变换应用于在输入颜色空间中表示的输入数字图像， 在参考颜色空间中形成相应的输入数字图像。 该方法还包括响应于所识别的输入颜色空间来调整图像增强算法的一个或多个算法参数，以及将具有一个或多个经调整的算法参数的图像增强算法应用于参考颜色空间中的对应输入数字图像， 在参考色彩空间中产生增强的数字图像。
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公开(公告)号：US20050089247A1
公开(公告)日：2005-04-28
申请号：US10692536
申请日：2003-10-24
申请人： Gustav Braun , Andrew Gallagher , Raymond Ptucha
发明人： Gustav Braun , Andrew Gallagher , Raymond Ptucha
摘要： A method of processing a digital image having pixels to improve the sharpness of a print generated from the digital image including determining a magnification value representing the magnification of a pixel of the digital image on the print based on the number of input digital image pixels and the output number of digital image pixels; producing a filter in response to the magnification value; using the filter to operate on the digital image to adjust the sharpness of the digital image to produce a sharpened digital image; resizing according to the magnification value the sharpened digital image to produce a resized sharpened digital image which includes the output number of digital image pixels; and producing the print based on the resized sharpened digital image.
摘要翻译： 一种处理具有像素的数字图像的方法，以提高从数字图像生成的打印的清晰度，包括基于输入的数字图像像素的数量确定表示打印上的数字图像的像素的倍率的倍率值，并且 数字图像像素的输出数量; 根据放大值产生滤光片; 使用滤波器对数字图像进行操作以调整数字图像的清晰度以产生锐化的数字图像; 根据倍率值对锐化的数字图像进行调整，以产生包括数字图像像素的输出数量的经调整大小的锐化数字图像; 并根据调整大小的锐化数字图像生成打印。
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