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公开(公告)号:US20110292219A1
公开(公告)日:2011-12-01
申请号:US12787329
申请日:2010-05-25
申请人: Nelson Liang An Chang , Suk Hwan Lim , Feng Tang
发明人: Nelson Liang An Chang , Suk Hwan Lim , Feng Tang
CPC分类号: G06T7/0018 , G06T7/80 , G06T2207/30208
摘要: A reference set of image features is determined from an electronic data file specifying a reference image in a reference coordinate space. Rendering information describing a physical rendering of the reference image is ascertained. Calibration-enabling data is derived from the reference set of the image features and the ascertained rendering information. The calibration-enabling data is provided to calibrate an imaging system. The calibration-enabling data may be stored. The imaging system may capture an image of the physical rendering of the reference image in relation to a capture coordinate space. An extracted set of image features may be extracted from the captured image. Respective ones of the image features in the reference and extracted sets may be matched. The imaging system may be calibrated based on matched ones of the image features and the rendering information.
摘要翻译: 从指定参考坐标空间中的参考图像的电子数据文件确定参考图像特征集。 确定描述参考图像的物理渲染的渲染信息。 校准使能数据从图像特征的参考集和确定的渲染信息中导出。 提供校准使能数据以校准成像系统。 可以存储校准使能数据。 成像系统可以相对于捕获坐标空间捕获参考图像的物理渲染的图像。 可以从捕获的图像中提取一组提取的图像特征。 可以匹配参考和提取集中的图像特征中的各个图像特征。 成像系统可以基于匹配的图像特征和渲染信息进行校准。
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公开(公告)号:US20110142350A1
公开(公告)日:2011-06-16
申请号:US13059925
申请日:2008-09-03
申请人: Feng Tang , Suk Hwan Lim
发明人: Feng Tang , Suk Hwan Lim
IPC分类号: G06K9/46
CPC分类号: G06K9/4647 , G06T7/337 , G06T2207/10016
摘要: A method and system for analyzing an image made up of a plurality of pixels includes identifying a subset of the pixels, and for each identified pixel a local patch of pixels surrounding the identified pixel is defined and the pixels in the local patch are grouped into bins. The local patch is divided into a plurality of sub-patches, and for each sub-patch the method includes determining how many pixels in each sub-patch fall into each of the bins to create an intermediate vector, and the intermediate vectors are concatenated to form a feature vector and describe the local patch.
摘要翻译: 用于分析由多个像素组成的图像的方法和系统包括识别像素的子集,并且对于每个识别的像素,定义周围识别的像素的局部像素块,并且将局部光斑中的像素分组成块 。 局部贴片被分成多个子贴片,并且对于每个子贴片,该方法包括确定每个子贴片中的每个子像素中有多少个像素落入每个存储器中以产生中间矢量,并且中间矢量被连接到 形成特征向量并描述本地补丁。
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73.
公开(公告)号:US07860332B2
公开(公告)日:2010-12-28
申请号:US11031877
申请日:2005-01-07
申请人: Suk Hwan Lim , Jonathan Yen
发明人: Suk Hwan Lim , Jonathan Yen
IPC分类号: G06K9/36
CPC分类号: H04N5/23212
摘要: A method for determining an indication of how well-focused an image is. An image is divided into a plurality of blocks. At least one local measure is determined for at least one block of the plurality of blocks. At least one global figure-of-merit is determined for the image based on the local measure. An indication of focus is determined based on the global figure-of-merit.
摘要翻译: 一种用于确定图像焦点如何的指示的方法。 图像被分成多个块。 为多个块中的至少一个块确定至少一个本地度量。 基于本地度量确定图像的至少一个全局品质因数。 焦点的指示是根据全球品质因数确定的。
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公开(公告)号:US07688379B2
公开(公告)日:2010-03-30
申请号:US11299024
申请日:2005-12-09
申请人: George H. Forman , Suk Hwan Lim
发明人: George H. Forman , Suk Hwan Lim
CPC分类号: H04N5/23212 , H04N5/2356
摘要: A method, apparatus, and system are disclosed for selecting quality images from multiple captured images. One embodiment is an image capturing system. The system includes hardware for capturing a plurality of consecutive images and a processor for determining a quality indication for the consecutive images and for selecting one of the consecutive images based on the quality indication.
摘要翻译: 公开了一种用于从多个拍摄图像中选择质量图像的方法,装置和系统。 一个实施例是图像捕获系统。 该系统包括用于捕获多个连续图像的硬件和用于确定连续图像的质量指示并用于基于质量指示来选择连续图像之一的处理器。
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公开(公告)号:US07623683B2
公开(公告)日:2009-11-24
申请号:US11403989
申请日:2006-04-13
申请人: Mei Chen , Qian Lin , Suk Hwan Lim
发明人: Mei Chen , Qian Lin , Suk Hwan Lim
CPC分类号: G06T5/50 , H04N5/23232 , H04N5/235 , H04N5/2355
摘要: Methods, machines, and machine-readable media for processing multiple exposure source images, including a reference image and one or more non-reference images, are described. In one aspect, respective sets of motion vectors that establish correspondences between respective pairs of the source images are calculated. Ones of the source images are warped to a reference coordinate system based on the sets of motion vectors. For each of the non-reference ones of the warped images, a respective set of one or more measures of alignment confidence between the non-reference warped image and the reference image in the reference coordinate system is computed. Saturated pixels and unsaturated pixels are identified in the warped images. An output image with pixel value contributions from unsaturated pixels in the warped images is generated based on the computed alignment confidence measures.
摘要翻译: 描述了用于处理多个曝光源图像(包括参考图像和一个或多个非参考图像)的方法,机器和机器可读介质。 在一个方面,计算在各个对象图像之间建立对应关系的各组运动矢量。 基于运动矢量集,将源图像的一部分变形为参考坐标系。 对于每个未参考的翘曲图像,计算在参考坐标系中的非参考翘曲图像和参考图像之间的对准置信度的相应集合。 饱和像素和不饱和像素在翘曲图像中被识别。 基于所计算的对准置信度度量,生成具有来自翘曲图像中的不饱和像素的像素值贡献的输出图像。
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公开(公告)号:US07551772B2
公开(公告)日:2009-06-23
申请号:US10999654
申请日:2004-11-30
申请人: Suk Hwan Lim , D. Amnon Silverstein
发明人: Suk Hwan Lim , D. Amnon Silverstein
IPC分类号: G06K9/00
CPC分类号: G06T5/003 , G06T5/20 , G06T5/50 , G06T2207/10024 , H04N5/217 , H04N5/23229 , H04N9/11 , H04N9/646
摘要: A method performed by a processing system is provided. The method comprises computing an auto-correlation of sharp channel information of a digital image, computing a cross-correlation between the sharp channel information and blurred channel information of the digital image, and estimating a blur kernel using the auto-correlation and the cross-correlation.
摘要翻译: 提供了一种由处理系统执行的方法。 该方法包括:计算数字图像的锐利信道信息的自相关,计算锐利信道信息与数字图像的模糊信道信息之间的互相关,以及使用自相关估计模糊核, 相关性。
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77.
公开(公告)号:US20080134094A1
公开(公告)日:2008-06-05
申请号:US11607181
申请日:2006-12-01
申请人: Ramin Samadani , Suk Hwan Lim , Daniel R. Tretter
发明人: Ramin Samadani , Suk Hwan Lim , Daniel R. Tretter
IPC分类号: G06F3/048
CPC分类号: G06T3/0012
摘要: Methods, systems, and machine-readable media for processing an input image are described. In one aspect, respective visual features of local input image regions of an input image having a first pixel resolution are analyzed to produce a result. Based on the result of analyzing the visual features, reduced-resolution visual representations of corresponding ones of the local input image regions are derived from the input image. A thumbnail image that reflects the arrangements, proportions and local details of the input image having a second pixel resolution lower than the first pixel resolution is produced from the reduced-resolution visual representations. The thumbnail image is output.
摘要翻译: 描述了用于处理输入图像的方法,系统和机器可读介质。 在一个方面,分析具有第一像素分辨率的输入图像的本地输入图像区域的各自的视觉特征以产生结果。 基于分析视觉特征的结果,从输入图像中导出对应的局部输入图像区域的缩小分辨率的视觉表示。 从缩小分辨率的视觉表示形成反映具有比第一像素分辨率低的第二像素分辨率的输入图像的配置,比例和局部细节的缩略图。 输出缩略图。
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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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