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1. 发明申请

US20130322753A1 SYSTEMS AND METHODS FOR LOCAL TONE MAPPING 有权
公开(公告)号：US20130322753A1
公开(公告)日：2013-12-05
申请号：US13485421
申请日：2012-05-31
申请人： Suk Hwan Lim , D. Amnon Silverstein , Guy Cote , Steven David Hordley , Graham Finlayson , Weichun Ku , Joseph P. Bratt
发明人： Suk Hwan Lim , D. Amnon Silverstein , Guy Cote , Steven David Hordley , Graham Finlayson , Weichun Ku , Joseph P. Bratt
IPC分类号： G06T5/00
CPC分类号： G06T5/001 , G06K9/38 , G06T1/20 , G06T5/002 , G06T5/003 , G06T5/008 , G06T5/50 , G06T2207/10024 , G06T2207/20012 , G06T2207/20028 , G06T2207/20208
摘要： Systems and methods for local tone mapping are provided. In one example, an electronic device includes an electronic display, an imaging device, and an image signal processor. The electronic display may display images of a first bit depth, and the imaging device may include an image sensor that obtains image data of a higher bit depth than the first bit depth. The image signal processor may process the image data, and may include local tone mapping logic that may apply a spatially varying local tone curve to a pixel of the image data to preserve local contrast when displayed on the display. The local tone mapping logic may smooth the local tone curve applied to the intensity difference between the pixel and another nearby pixel exceeds a threshold.

2. 发明申请

US20130322745A1 Local Image Statistics Collection 有权
标题翻译：本地图像统计信息收集
公开(公告)号：US20130322745A1
公开(公告)日：2013-12-05
申请号：US13484741
申请日：2012-05-31
申请人： Suk Hwan Lim , D. Amnon Silverstein , Guy Cote , Steven David Hordley , Graham Finlayson , Weichun Ku , Joseph P. Bratt
发明人： Suk Hwan Lim , D. Amnon Silverstein , Guy Cote , Steven David Hordley , Graham Finlayson , Weichun Ku , Joseph P. Bratt
IPC分类号： G06K9/36
CPC分类号： H04N9/73 , H04N5/142 , H04N9/045 , H04N9/735 , H04N2209/046
摘要： Systems and methods for generating local image statistics are provided. In one example, an image signal processing system may include a statistics pipeline with image processing logic and local image statistics collection logic. The image processing logic may receive and process pixels of raw image data. The local image statistics collection logic may generate a local histogram associated with a luminance of the pixels of a first block of pixels of the raw image data or a thumbnail in which a pixel of the thumbnail represents a downscaled version of the luminance of the pixels of the first block of the pixel. The raw image data may include many other blocks of pixels of the same size as the first block of pixels.
摘要翻译：提供了生成本地图像统计信息的系统和方法。在一个示例中，图像信号处理系统可以包括具有图像处理逻辑和本地图像统计信息收集逻辑的统计流水线。图像处理逻辑可以接收和处理原始图像数据的像素。本地图像统计收集逻辑可以生成与原始图像数据的第一像素块的像素的亮度相关联的局部直方图或缩略图，其中缩略图的像素表示缩略图的像素的亮度像素的第一个块。原始图像数据可以包括与第一像素块相同尺寸的许多其他像素块。

3. 发明授权

US09105078B2 Systems and methods for local tone mapping 有权
标题翻译：用于本地色调映射的系统和方法
公开(公告)号：US09105078B2
公开(公告)日：2015-08-11
申请号：US13485421
申请日：2012-05-31
申请人： Suk Hwan Lim , D. Amnon Silverstein , Guy Cote , Steven David Hordley , Graham Finlayson , Weichun Ku , Joseph P. Bratt
发明人： Suk Hwan Lim , D. Amnon Silverstein , Guy Cote , Steven David Hordley , Graham Finlayson , Weichun Ku , Joseph P. Bratt
IPC分类号： G06K9/00 , G06T5/00
CPC分类号： G06T5/001 , G06K9/38 , G06T1/20 , G06T5/002 , G06T5/003 , G06T5/008 , G06T5/50 , G06T2207/10024 , G06T2207/20012 , G06T2207/20028 , G06T2207/20208
摘要： Systems and methods for local tone mapping are provided. In one example, an electronic device includes an electronic display, an imaging device, and an image signal processor. The electronic display may display images of a first bit depth, and the imaging device may include an image sensor that obtains image data of a higher bit depth than the first bit depth. The image signal processor may process the image data, and may include local tone mapping logic that may apply a spatially varying local tone curve to a pixel of the image data to preserve local contrast when displayed on the display. The local tone mapping logic may smooth the local tone curve applied to the intensity difference between the pixel and another nearby pixel exceeds a threshold.
摘要翻译：提供了本地色调映射的系统和方法。在一个示例中，电子设备包括电子显示器，成像设备和图像信号处理器。电子显示器可以显示第一位深度的图像，并且成像装置可以包括获得比第一位深度更高的位深度的图像数据的图像传感器。图像信号处理器可以处理图像数据，并且可以包括本地色调映射逻辑，其可以将空间上变化的本地色调曲线应用于图像数据的像素，以便在显示器上显示时保持局部对比度。本地色调映射逻辑可以平滑应用于像素和另一附近像素之间的强度差超过阈值的局部色调曲线。

4. 发明授权

US09077943B2 Local image statistics collection 有权
标题翻译：本地图像统计收集
公开(公告)号：US09077943B2
公开(公告)日：2015-07-07
申请号：US13484741
申请日：2012-05-31
申请人： Suk Hwan Lim , D. Amnon Silverstein , Guy Cote , Steven David Hordley , Graham Finlayson , Weichun Ku , Joseph P. Bratt
发明人： Suk Hwan Lim , D. Amnon Silverstein , Guy Cote , Steven David Hordley , Graham Finlayson , Weichun Ku , Joseph P. Bratt
IPC分类号： G06K9/00 , H04N9/73 , H04N5/14 , H04N9/04
CPC分类号： H04N9/73 , H04N5/142 , H04N9/045 , H04N9/735 , H04N2209/046
摘要： Systems and methods for generating local image statistics are provided. In one example, an image signal processing system may include a statistics pipeline with image processing logic and local image statistics collection logic. The image processing logic may receive and process pixels of raw image data. The local image statistics collection logic may generate a local histogram associated with a luminance of the pixels of a first block of pixels of the raw image data or a thumbnail in which a pixel of the thumbnail represents a downscaled version of the luminance of the pixels of the first block of the pixel. The raw image data may include many other blocks of pixels of the same size as the first block of pixels.
摘要翻译：提供了生成本地图像统计信息的系统和方法。在一个示例中，图像信号处理系统可以包括具有图像处理逻辑和本地图像统计信息收集逻辑的统计流水线。图像处理逻辑可以接收和处理原始图像数据的像素。本地图像统计收集逻辑可以生成与原始图像数据的第一像素块的像素的亮度相关联的局部直方图或缩略图，其中缩略图的像素表示缩略图的像素的亮度像素的第一个块。原始图像数据可以包括与第一像素块相同尺寸的许多其他像素块。

5. 发明授权

US08538145B2 Gamma adjustment for maximizing information in images 有权
标题翻译：伽玛调整，以最大化图像中的信息
公开(公告)号：US08538145B2
公开(公告)日：2013-09-17
申请号：US13111625
申请日：2011-05-19
申请人： Graham Finlayson , Ruixia Xu
发明人： Graham Finlayson , Ruixia Xu
IPC分类号： G06K9/00
CPC分类号： G06T5/007 , G06T5/40 , G06T2207/20008 , G06T2207/20012 , G06T2207/20032 , G06T2207/20076 , H04N5/202
摘要： Methods, systems, and apparatus, including computer programs encoded on computer storage media, are described for transforming an image at least in part by using a gamma transformation that maximizes information in the transformed image. In one aspect, a digital image is received and brightness of the digital image is determined. The brightness of the digital image can include luminance or color. Maximum available detail in the digital image is brought out at least in part by applying to the brightness of the digital image a first gamma exponent that is equal to one divided by a negative of an average logarithm of the brightness of the digital image.
摘要翻译：描述了包括在计算机存储介质上编码的计算机程序的方法，系统和装置，用于至少部分地通过使变换图像中的信息最大化的伽马变换来变换图像。在一个方面，接收数字图像并确定数字图像的亮度。数字图像的亮度可以包括亮度或颜色。至少部分地通过将数字图像的亮度等于1的第一伽马指数除以数字图像的亮度的平均对数的负值来至少部分地产生数字图像中的最大可用细节。

6. 发明申请

US20120263377A1 IMAGE RECONSTRUCTION METHOD AND SYSTEM 有权
标题翻译：图像重建方法与系统
公开(公告)号：US20120263377A1
公开(公告)日：2012-10-18
申请号：US13391054
申请日：2010-08-20
申请人： Graham Finlayson , Mark Drew , David Connah
发明人： Graham Finlayson , Mark Drew , David Connah
IPC分类号： G06K9/36
CPC分类号： G06F17/10 , G06T5/00 , G06T5/50 , G06T2207/10024
摘要： A method and system for producing a scalar image from a derivative field and a vector image is disclosed. A function class c is selected, where all members of the class c are functions which map each vector of the vector image to a unique scalar value. A function f is selected from the class c which maps the vector image to a scalar image, the derivative of which is closest to the derivative field. The scalar image is generated from the vector image by using f to calculate each scalar value in the scalar image from a corresponding vector in the vector image.
摘要翻译：公开了一种用于从导数场和矢量图像生成标量图像的方法和系统。选择一个函数类c，其中类c的所有成员都是将向量图像的每个向量映射到唯一标量值的函数。从c类中选择函数f，该类c将矢量图像映射到标量图像，该标量图像的导数最接近导数域。通过使用f从向量图像中的对应矢量计算标量图像中的每个标量值，从矢量图像生成标量图像。

7. 发明申请

US20120114236A1 Gamma Adjustment for Maximizing Information in Images 有权
标题翻译：伽玛调整，最大化图像信息
公开(公告)号：US20120114236A1
公开(公告)日：2012-05-10
申请号：US13111625
申请日：2011-05-19
申请人： Graham Finlayson , Ruixia Xu
发明人： Graham Finlayson , Ruixia Xu
IPC分类号： G06K9/00
CPC分类号： G06T5/007 , G06T5/40 , G06T2207/20008 , G06T2207/20012 , G06T2207/20032 , G06T2207/20076 , H04N5/202
摘要： Methods, systems, and apparatus, including computer programs encoded on computer storage media, are described for transforming an image at least in part by using a gamma transformation that maximizes information in the transformed image. In one aspect, a digital image is received and brightness of the digital image is determined. The brightness of the digital image can include luminance or color. Maximum available detail in the digital image is brought out at least in part by applying to the brightness of the digital image a first gamma exponent that is equal to one divided by a negative of an average logarithm of the brightness of the digital image.
摘要翻译：描述了包括在计算机存储介质上编码的计算机程序的方法，系统和装置，用于至少部分地通过使变换图像中的信息最大化的伽马变换来变换图像。在一个方面，接收数字图像并确定数字图像的亮度。数字图像的亮度可以包括亮度或颜色。至少部分地通过将数字图像的亮度等于1的第一伽马指数除以数字图像的亮度的平均对数的负值来至少部分地产生数字图像中的最大可用细节。

8. 发明申请

US20130329093A1 Nosie-Constrained Tone Curve Generation 有权
标题翻译：编号约束色调曲线
公开(公告)号：US20130329093A1
公开(公告)日：2013-12-12
申请号：US13490311
申请日：2012-06-06
申请人： Xuemei Zhang , Steven D. Hordley , Graham Finlayson
发明人： Xuemei Zhang , Steven D. Hordley , Graham Finlayson
IPC分类号： H04N5/217
CPC分类号： H04N5/2355
摘要： Methods to generate, and devices to use, an adaptive tone curve generation operation are disclosed. Tone curves so generated have been found to produce stable tone mapping in a wide range of operational environments, including during multi-exposure fused images (e.g., during high dynamic range image fusion). In general, techniques are disclosed that use a content-load histogram in combination with image capture device noise information to adaptively bound a tone curve's slope and, therefore, the resulting tone curve. As used here, a content-load histogram is a histogram that captures spatial, color or other information carried by an image's pixels at various gray levels.
摘要翻译：公开了生成自适应色调曲线生成操作的方法和使用装置。已经发现如此生成的色调曲线在广泛的操作环境中产生稳定的色调映射，包括在多曝光融合图像期间（例如，在高动态范围图像融合期间）。通常，公开了使用内容负载直方图与图像捕获设备噪声信息相结合以自适应地限制色调曲线的斜率并因此使得所得到的色调曲线的技术。如这里使用的，内容负载直方图是捕获由各种灰度级别的图像像素承载的空间，颜色或其他信息的直方图。

9. 发明授权

US08467605B2 Color invariant image representation method and apparatus 有权
标题翻译：彩色不变图像表示方法和装置
公开(公告)号：US08467605B2
公开(公告)日：2013-06-18
申请号：US13356466
申请日：2012-01-23
申请人： Graham Finlayson
发明人： Graham Finlayson
IPC分类号： G06K9/00
CPC分类号： G06T5/40 , G06T5/009 , G06T2207/10024
摘要： A color image comprises color values in each of one or more color channels for each of a plurality of points, or pixels, within the image. The image is represented by rank ordering the values in each color channel. The image representation generated in this way is usable for automated-vision or computer-vision tasks, for example.
摘要翻译：彩色图像包括图像内的多个点或像素中的每一个的一个或多个颜色通道中的每一个中的颜色值。图像通过对每个颜色通道中的值进行排序来表示。以这种方式生成的图像表示例如可用于自动视觉或计算机视觉任务。

10. 发明申请

US20120121178A1 Image Representation Method and Apparatus 有权
标题翻译：图像表示方法和装置
公开(公告)号：US20120121178A1
公开(公告)日：2012-05-17
申请号：US13356466
申请日：2012-01-23
申请人： Graham Finlayson
发明人： Graham Finlayson
IPC分类号： G06K9/00
CPC分类号： G06T5/40 , G06T5/009 , G06T2207/10024
摘要： A colour image comprises colour values in each of one or more colour channels for each of a plurality of points, or pixels, within the image. The image is represented by rank ordering the values in each colour channel. The image representation generated in this way is usable for automated-vision or computer-vision tasks, for example.
摘要翻译：彩色图像包括图像内的多个点或像素中的每一个的一个或多个颜色通道中的每一个中的颜色值。图像通过对每个颜色通道中的值进行排序来表示。以这种方式生成的图像表示例如可用于自动视觉或计算机视觉任务。

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