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1. 发明授权

US5390036A Color image reproduction of scenes with preferential tone mapping 失效
标题翻译：具有优惠色调映射的场景的彩色图像再现
公开(公告)号：US5390036A
公开(公告)日：1995-02-14
申请号：US145369
申请日：1993-10-28
申请人： John D. Buhr , Harry D. Franchino
发明人： John D. Buhr , Harry D. Franchino
IPC分类号： G03C5/04 , G03B27/73 , G03C5/08 , G03F3/08 , G03F3/10 , H04N1/407
CPC分类号： H04N1/407 , G03B27/735
摘要： A system and method of image reproduction in color with preferential tone mapping in which the image reproduction is subjected to a scene parameter transformation which when taken in conjunction with untransformed characteristics of the image reproduction system and method results in a reproduced tone mapping having instantaneous gamma values of viewed reproduction density relative to density of the original scene which are greater than 1.0 and less than 1.0 plus 0.35 times scene exposure density over a scene exposure density range of from 0.6 to 1.45 as measured relative to a zero density, 100% diffuse reflector in the original scene. Preferably, the instantaneous gamma values within this scene exposure density range further lie substantially within a range of values subtended by an angle of 14.degree. as measured from a reference point at 0.0 scene exposure density and 1.0 viewed reproduction density gradient.
摘要翻译：具有优先色调映射的彩色图像再现系统和方法，其中图像再现受到场景参数变换，当与图像再现系统和方法的未转换特性相结合时，该场景参数变换产生具有瞬时伽马值的再现色调映射在相对于零密度测量的0.6至1.45的场景曝光密度范围内，相对于原始场景的密度观察到的大于1.0且小于1.0的场景曝光密度的再现浓度相对于原始场景的浓度为0.35倍，100％漫反射器原来的场景。优选地，在场景曝光浓度范围内的瞬时伽马值进一步基本上在从0.0场景曝光密度和1.0观看再现密度梯度的参考点测量的对角度为14°的值的范围内。

2. 发明授权

US5447811A Color image reproduction of scenes with preferential tone mapping 失效
标题翻译：具有优惠色调映射的场景的彩色图像再现
公开(公告)号：US5447811A
公开(公告)日：1995-09-05
申请号：US219042
申请日：1994-03-23
申请人： John D. Buhr , Harry D. Franchino
发明人： John D. Buhr , Harry D. Franchino
IPC分类号： G03C5/04 , G03B27/73 , G03C5/08 , G03F3/08 , G03F3/10 , H04N1/407 , G03C7/18 , G03B27/52 , G03C5/40
CPC分类号： H04N1/407 , G03B27/735
摘要： A system and method of image reproduction in color with preferential tone mapping are provided in which the method includes the steps of capturing original scene parameters and creating a visual reproduction of the scene, the method additionally comprising:performing a transformation of said captured scene parameters, said transformation being such that, taken in conjunction with untransformed characteristics of the capturing and creating steps, it results in a reproduced tone mapping having instantaneous gamma values of viewed reproduction density relative to density of the original scene which are greater than a minimum value of A and less than A plus 0.35 times scene exposure density over a scene exposure density range of from 0.60 to 1.45 as measured relative to a zero density, 100% diffuse reflector in the original scene, the instantaneous gamma values within scene exposure density range further lying entirely within a range of values subtended by an angle of 14.degree. measured from a reference point at 0.0 scene exposure density and a viewed reproduction density gradient of A, wherein A is 1.0 in the case of direct view reflection media reproduction, 1.1 in the case of self-illuminated reproduction for viewing with ambient surround, and 1.3 in the case of a reproduction for viewing with dark surround.
摘要翻译：提供了具有优先色调映射的彩色图像再现的系统和方法，其中该方法包括捕获原始场景参数和创建场景的视觉再现的步骤，该方法还包括：执行所述捕获的场景参数的变换，所述变换使得结合捕获和创建步骤的未变换特征，其导致具有相对于原始场景的密度观察到的再现密度的瞬时伽马值的再现色调映射，其大于A的最小值并且相对于原始场景中相对于零密度，100％漫反射器测量的场景曝光密度范围为0.60至1.45的场景曝光密度小于A + 0.35倍场景曝光密度范围内的瞬时伽马值进一步完全放大在从14度测得的角度范围内在0.0场景曝光密度下的参考点和A的观看再现浓度梯度，其中在直接观看反射介质再现的情况下A为1.0，在用于环境环绕观看的自发光再现的情况下为1.1，在用于用黑暗环绕观看的再现的情况。

3. 发明授权

US6072605A Transforms for digital images in linear form 失效
标题翻译：以线性形式转换数字图像
公开(公告)号：US6072605A
公开(公告)日：2000-06-06
申请号：US990067
申请日：1997-12-12
申请人： Paul B. Gilman , Harry D. Franchino , Stephen A. Noble , John F. Hamilton
发明人： Paul B. Gilman , Harry D. Franchino , Stephen A. Noble , John F. Hamilton
IPC分类号： G06F3/12 , G06T5/00 , G09G3/20 , H04N1/407 , H04N5/76 , H04N5/91 , G03F3/10 , H04N5/225
CPC分类号： H04N1/4072
摘要： A method which substantially maintains the exposure latitude contained in one or more digital images captured in linear form and which uses an output device with a predetermined aim curve for producing visual images from such digital image includes the steps of selecting a particular reference portion of the scene corresponding to the digital image and adjusting the code value of such reference portion to a code value corresponding to a desired density and which corresponds to a point on the aim curve and changing the remaining code values of the digital image based upon the selected code value of the point on the aim curve so that a new digital image in linear form is produced; transforming the new digital image to form a third digital image which has code values based on the aim curve; and producing visual images by the output device in response to the transformed third digital image.
摘要翻译：一种基本保持包含在以线性形式捕获的一个或多个数字图像中的曝光宽容度的方法，并且使用具有预定目标曲线的输出装置从该数字图像产生视觉图像的方法包括以下步骤：选择场景的特定参考部分对应于数字图像，并将这种参考部分的代码值调整为对应于期望密度并对应于目标曲线上的点的代码值，并且基于所选择的代码值来改变数字图像的剩余代码值目标曲线上的点，使得生成线性形式的新数字图像; 转换新的数字图像以形成基于目标曲线的具有代码值的第三数字图像; 以及响应于变换的第三数字图像，由输出装置产生视觉图像。

4. 发明授权

US5300381A Color image reproduction of scenes with preferential tone mapping 失效
标题翻译：具有优惠色调映射的场景的彩色图像再现
公开(公告)号：US5300381A
公开(公告)日：1994-04-05
申请号：US950871
申请日：1992-09-24
申请人： John D. Buhr , Harry D. Franchino
发明人： John D. Buhr , Harry D. Franchino
IPC分类号： G03C5/04 , G03B27/73 , G03C5/08 , G03F3/08 , G03F3/10 , H04N1/407 , G03C7/18 , G03B27/52 , G03C5/40
CPC分类号： H04N1/407 , G03B27/735
摘要： A system and method of image reproduction in color with preferential tone mapping in which the image reproduction is subjected to a scene parameter transformation which when taken in conjunction with untransformed characteristics of the image reproduction system and method results in a reproduced tone mapping having instantaneous gamma values of viewed reproduction density relative to density of the original scene which are greater than 1.0 and less than 1.0 plus 0.35 times scene exposure density over a scene exposure density range of from 0.6 to 1.45 as measured relative to a zero density, 100% diffuse reflector in the original scene. Preferably, the instantaneous gamma values within this scene exposure density range further lie substantially within a range of values subtended by an angle of 14.degree. as measured from a reference point at 0.0 scene exposure density and 1.0 viewed reproduction density gradient.
摘要翻译：具有优先色调映射的彩色图像再现系统和方法，其中图像再现受到场景参数变换，当与图像再现系统和方法的未转换特性相结合时，该场景参数变换产生具有瞬时伽马值的再现色调映射在相对于零密度测量的0.6至1.45的场景曝光密度范围内，相对于原始场景的密度观察到的大于1.0且小于1.0的场景曝光密度的再现浓度相对于原始场景的浓度为0.35倍，100％漫反射器原来的场景。优选地，在场景曝光浓度范围内的瞬时伽马值进一步基本上在从0.0场景曝光密度和1.0观看再现密度梯度的参考点测量的对角度为14度的值的范围内。

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