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公开(公告)号：US09743057B2
公开(公告)日：2017-08-22
申请号：US13485235
申请日：2012-05-31
CPC分类号： H04N9/64 , H04N5/142 , H04N5/23229 , H04N5/23254 , H04N5/365 , H04N5/367 , H04N9/045 , H04N9/735
摘要： Systems and methods for correcting intensity drop-offs due to geometric properties of lenses are provided. In one example, a method includes receiving an input pixel of the image data, the image data acquired using an image sensor. A color component of the input pixel is determined. A gain grid is determined by pointing to the gain grid in external memory. Each of the plurality of grid points is associated with a lens shading gain selected based upon the color of the input pixel. A nearest set of grid points that enclose the input pixel is identified. Further, a lens shading gain is determined by interpolating the lens shading gains associated with each of the set of grid points and is applied to the input pixel.
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公开(公告)号：US20150296193A1
公开(公告)日：2015-10-15
申请号：US13484814
申请日：2012-05-31
申请人： Guy Cote , Sheng Lin , Suk Hwan Lim , D. Amnon Silverstein , Steven David Hordley , Joseph P. Bratt
发明人： Guy Cote , Sheng Lin , Suk Hwan Lim , D. Amnon Silverstein , Steven David Hordley , Joseph P. Bratt
CPC分类号： H04N9/646 , G06T1/20 , G06T3/4015 , G06T5/002 , G06T5/009 , G06T5/20 , G06T2207/10024 , H04N5/365 , H04N9/045 , H04N9/735
摘要： Systems and methods for processing image data in RGB format are provided. In one example, an electronic device includes memory to store image data in raw or RGB format, or both, and an RGB image processing pipeline to process the image data. Specifically, the RGB image processing pipeline may process the image data regardless of whether the image data is of raw or RGB format. The RGB image processing pipeline may include receiving logic to receive the image data in raw or RGB format and demosaicing logic to, when the receiving logic receives the image data in raw format, convert the image data into RGB format. The logic may include local tone mapping logic configured to apply spatially varying tone curves to the image data, a color correction matrix configured to correct color in the image data, and gamma logic configured to transform the image data into gamma space.
摘要翻译： 提供了以RGB格式处理图像数据的系统和方法。 在一个示例中，电子设备包括用于以原始或RGB格式或两者存储图像数据的存储器和用于处理图像数据的RGB图像处理流水线。 具体而言，RGB图像处理流水线可以处理图像数据，而不管图像数据是原始还是RGB格式。 RGB图像处理流水线可以包括接收逻辑以接收原始或RGB格式的图像数据和去马赛克逻辑，当接收逻辑以原始格式接收图像数据时，将图像数据转换为RGB格式。 逻辑可以包括被配置为将空间变化的色调曲线应用于图像数据的本地色调映射逻辑，配置为校正图像数据中的颜色的色彩校正矩阵，以及被配置为将图像数据变换为伽马空间的伽马逻辑。
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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
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。
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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
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。
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公开(公告)号：US09025867B2
公开(公告)日：2015-05-05
申请号：US13484926
申请日：2012-05-31
申请人： Guy Cote , Sheng Lin , Suk Hwan Lim , D. Amnon Silverstein , Simon Wolfenden Butler , Mark A. Zimmer , Joseph P. Bratt
发明人： Guy Cote , Sheng Lin , Suk Hwan Lim , D. Amnon Silverstein , Simon Wolfenden Butler , Mark A. Zimmer , Joseph P. Bratt
CPC分类号： G06T1/20 , G06T3/4015
摘要： Systems and methods for processing YCC image data provided. In one example, an electronic device includes memory to store image data in RGB or YCC format and a YCC image processing pipeline to process the image data. The YCC image processing pipeline may include receiving logic configured to receive the image data in RGB or YCC format and color space conversion logic configured to, when the image data is received in RGB format, convert the image data into YCC format. The YCC image processing logic may also include luma sharpening and chroma suppression logic; brightness, contrast, and color adjustment logic; gamma logic; chroma decimation logic; scaling logic; and chroma noise reduction logic.
摘要翻译： 用于处理提供的YCC图像数据的系统和方法。 在一个示例中，电子设备包括以RGB或YCC格式存储图像数据的存储器和用于处理图像数据的YCC图像处理流水线。 YCC图像处理流水线可以包括被配置为接收RGB或YCC格式的图像数据的接收逻辑，以及配置为当以RGB格式接收图像数据时将图像数据转换为YCC格式的颜色空间转换逻辑。 YCC图像处理逻辑还可以包括亮度锐化和色度抑制逻辑; 亮度，对比度和颜色调整逻辑; 伽玛逻辑; 色度抽取逻辑; 缩放逻辑; 和色度降噪逻辑。
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6.发明授权公开(公告)号：US09014504B2
公开(公告)日：2015-04-21
申请号：US13485199
申请日：2012-05-31
IPC分类号： G06K9/40 , H04N5/228 , H04N5/76 , H04N9/64 , H04N9/68 , G06K9/00 , H04N5/232 , H04N5/235 , H04N9/04
CPC分类号： H04N5/23229 , H04N5/2355 , H04N9/045 , H04N2209/046
摘要： Image sensors have finite ranges of illuminance that may be captured. When the sensors for particular pixels receive an amount of light exceeding these finite ranges, the pixel values clip to the maximum pixel value. Systems and methods for estimating pixel values that are clipped or near clipping are provided. In one example, a method for processing image data includes determining that a first channel of the image data is saturated or near saturation. The method further includes computing a highlight recovery value for the first channel based upon alternative channels in the image data that are not saturated or near saturation. The highlight recovery value is applied to the first channel.
摘要翻译： 图像传感器有可能被捕获的有限的照度范围。 当特定像素的传感器接收到超过这些有限范围的光量时，像素值将剪切到最大像素值。 提供了用于估计被裁剪或接近裁剪的像素值的系统和方法。 在一个示例中，用于处理图像数据的方法包括确定图像数据的第一通道饱和或接近饱和。 该方法还包括基于不饱和或接近饱和的图像数据中的替代信道来计算第一信道的高亮恢复值。 高亮恢复值应用于第一个通道。
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公开(公告)号：US08867837B2
公开(公告)日：2014-10-21
申请号：US13812421
申请日：2010-07-30
申请人： Hui-Man Hou , Li-Wei Zheng , Jian-Ming Jin , Jian Fan , Suk Hwan Lim
发明人： Hui-Man Hou , Li-Wei Zheng , Jian-Ming Jin , Jian Fan , Suk Hwan Lim
IPC分类号： G06K9/34 , C07D309/28 , G06K9/00
CPC分类号： G06K9/00463 , C07D309/28
摘要： A system and method of detecting separator lines in a web page may include determining coordinates of visible web elements on a web page, generating an edge image of the web page based on the coordinates of the web elements, filtering edges belonging to non-separator line elements within the edge image, detecting horizontal lines within the edge image, detecting vertical lines within the edge image, and filtering short lines within the edge image. A system for detecting separator lines in a web page may include a memory device, and a processor communicatively coupled to the memory, in which the processor determines coordinates of visible web elements on a web page, generates an edge image of the web page based on the coordinates of the web elements, filters edges belonging to non-separator line elements within the edge image, detects horizontal lines within the edge image, detects vertical lines within the edge image, and filters short lines within the edge image.
摘要翻译： 检测网页中的分隔线的系统和方法可以包括确定网页上的可视网页元素的坐标，基于网页元素的坐标生成网页的边缘图像，过滤属于非分隔线的边 边缘图像内的元素，检测边缘图像内的水平线，检测边缘图像内的垂直线，以及过滤边缘图像内的短线。 用于检测网页中的分隔线的系统可以包括存储器设备和通信地耦合到存储器的处理器，其中处理器确定网页上的可视网页元素的坐标，基于网页生成网页的边缘图像 网页元素的坐标，属于边缘图像内的非分隔线元素的滤镜边缘，检测边缘图像内的水平线，检测边缘图像内的垂直线，并对边缘图像内的短线进行滤波。
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公开(公告)号：US08654201B2
公开(公告)日：2014-02-18
申请号：US11064128
申请日：2005-02-23
申请人： Suk Hwan Lim , D. Amnon Silverstein
发明人： Suk Hwan Lim , D. Amnon Silverstein
CPC分类号： H04N5/23248 , G06T5/003 , G06T5/50 , G06T2207/20056 , H04N5/23277
摘要： A method for deblurring an image. A first image is captured. A second image is captured, wherein the second image is more blurred and more exposed than the first image. The second image is deblurred based on the first image.
摘要翻译： 去除图像的方法。 捕获第一个图像。 捕获第二图像，其中第二图像比第一图像更模糊并且更暴露。 第二个图像基于第一个图像被去除模糊。
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公开(公告)号：US20130322752A1
公开(公告)日：2013-12-05
申请号：US13484991
申请日：2012-05-31
申请人： Suk Hwan Lim , Mark A. Zimmer
发明人： Suk Hwan Lim , Mark A. Zimmer
IPC分类号： G06K9/40
CPC分类号： G06T5/20 , G06T5/002 , G06T2207/10024
摘要： Systems and methods for reducing chrominance (chroma) noise in image data are provided. In one example of such a method, image data in YCC format may be received into logic of an image signal processor. Using the logic, noise may be filtered from a first chrominance component or a second chrominance component, or both, of the image data, using a sparse filter and a noise threshold. The noise threshold may be determined based at least in part on two of the components of the YCC image data.
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公开(公告)号：US20130321700A1
公开(公告)日：2013-12-05
申请号：US13485341
申请日：2012-05-31
申请人： Guy Cote , Suk Hwan Lim , Munehiro Mori , Sheng Lin
发明人： Guy Cote , Suk Hwan Lim , Munehiro Mori , Sheng Lin
IPC分类号： H04N11/20
摘要： Systems, methods, and devices for sharpening image data are provided. One example of an image signal processing system includes a YCC processing pipeline that includes luma sharpening logic. The luma sharpening logic may sharpen the luma component while avoiding sharpening some noise. Specifically, a multi-scale unsharp mask filter may obtain unsharp signals by filtering an input luma component, and sharp component determination logic may determine sharp signals representing differences between the unsharp signals and the luma component. Sharp lookup tables may “core” the sharp signals, which may prevent some noise from being sharpened. Output logic may determine a sharpened output luma signal by combining the sharp signals with, for example, luma component or one of the unsharp signals.
摘要翻译： 提供了用于锐化图像数据的系统，方法和设备。 图像信号处理系统的一个示例包括包括亮度锐化逻辑的YCC处理流水线。 亮度锐化逻辑可以锐化亮度分量，同时避免锐化某些噪声。 具体地说，多尺度钝化掩模滤波器可以通过对输入亮度分量进行滤波来获得钝化信号，并且尖锐分量确定逻辑可以确定表示不清晰信号和亮度分量之间差异的尖锐信号。 锐度查找表可能会“清除”尖锐的信号，这可能会阻止某些噪点的锐化。 输出逻辑可以通过将尖锐信号与例如亮度分量或钝化信号之一组合来确定锐化的输出亮度信号。
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