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公开(公告)号：US20210235088A1
公开(公告)日：2021-07-29
申请号：US17232539
申请日：2021-04-16
申请人： Alexandros Tourapis , Guy Cote
发明人： Alexandros Tourapis , Guy Cote
IPC分类号： H04N19/124 , H04N19/30 , H04N19/70 , H04N19/126 , H04N19/186 , H04N19/157 , H04N19/86 , H04N19/136 , H04N19/13 , H04N19/15 , H04N19/159 , H04N19/51 , H04N19/61
摘要： A method of signaling additional chroma QP offset values that are specific to quantization groups is provided, in which each quantization group explicitly specifies its own set of chroma QP offset values. Alternatively, a table of possible sets of chroma QP offset values is specified in the header area of the picture, and each quantization group uses an index to select an entry from the table for determining its own set of chroma QP offset values. The quantization group specific chroma QP offset values are then used to determine the chroma QP values for blocks within the quantization group in addition to chroma QP offset values already specified for higher levels of the video coding hierarchy.
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2.发明授权Methods and/or apparatus for controlling zero-residual coding in predictive image/video coding 有权用于在预测图像/视频编码中控制零残差编码的方法和/或装置公开(公告)号：US09036712B1
公开(公告)日：2015-05-19
申请号：US11430127
申请日：2006-05-08
申请人： Guy Cote , Huipin Zhang
发明人： Guy Cote , Huipin Zhang
CPC分类号： H04N7/52 , H04N19/103 , H04N19/132 , H04N19/139 , H04N19/149 , H04N19/154 , H04N19/176 , H04N19/18 , H04N19/61
摘要： A method for coding video is disclosed. The method generally includes the steps of (A) receiving a video signal having a series of pictures, each of the pictures having a plurality of blocks, (B) analyzing the blocks to forecast if coding the blocks in a zero-residual coding mode would generate a plurality of artifacts, (C) disabling the zero-residual coding mode for the blocks forecasted to generate at least one of the artifacts and (D) enabling the zero-residual coding mode for the blocks forecasted to generate none of the artifacts.
摘要翻译： 公开了一种视频编码方法。 该方法通常包括以下步骤：（A）接收具有一系列图像的视频信号，每个图像具有多个块，（B）分析块以预测是否以零残差编码模式编码块 产生多个伪像，（C）禁止预测的块的零残余编码模式以产生伪像中的至少一个，以及（D）为预测的块生成无伪像的零残余编码模式。
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公开(公告)号：US08953882B2
公开(公告)日：2015-02-10
申请号：US13485299
申请日：2012-05-31
申请人： Suk Hwan Lim , D. Amnon Silverstein , Mark A. Zimmer , Guy Cote
发明人： Suk Hwan Lim , D. Amnon Silverstein , Mark A. Zimmer , Guy Cote
CPC分类号： G06T1/20 , H04N17/002
摘要： The present disclosure generally relates to systems and methods for image data processing. In certain embodiments, an image processing pipeline may compute noise statistics associated with image data by receiving a frame of the image data having a plurality of pixels. The image processing pipeline may then identify a plurality of portions of the frame of the image data such that each portion of the plurality of portions has a flat surface. The image processing pipeline may then calculate a plurality of gradients for each portion of the plurality of portions, determine one or more dominant gradient orientations for each portion of the plurality of portions, and generate a histogram that represents a plurality of dominant gradient orientations that corresponds to the plurality of portions. After generating the histogram, the image processing pipeline may store the histogram, which may represent the noise statistics, in a memory.
摘要翻译： 本公开通常涉及用于图像数据处理的系统和方法。 在某些实施例中，图像处理流水线可以通过接收具有多个像素的图像数据的帧来计算与图像数据相关联的噪声统计。 然后，图像处理流水线可以识别图像数据的帧的多个部分，使得多个部分的每个部分具有平坦表面。 然后，图像处理流水线可以为多个部分的每个部分计算多个梯度，为多个部分的每个部分确定一个或多个主要梯度取向，并且生成表示对应于多个部分的多个主要梯度取向的直方图 到多个部分。 在生成直方图之后，图像处理流水线可以将可以表示噪声统计的直方图存储在存储器中。
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公开(公告)号：US08760537B2
公开(公告)日：2014-06-24
申请号：US12876095
申请日：2010-09-03
CPC分类号： H04N5/2355 , G06T5/50 , G06T7/32 , G06T2207/10144 , G06T2207/10152 , G06T2207/20016 , G06T2207/20021 , G06T2207/20208 , H04N5/23216 , H04N5/23232 , H04N5/23245 , H04N5/23254 , H04N5/23258 , H04N5/2351 , H04N5/2352 , H04N5/2356 , H04N9/07
摘要： Some embodiments of the invention provide a mobile device that captures and produces images with high dynamic ranges. To capture and produce a high dynamic range image, the mobile device of some embodiments includes novel image capture and processing modules. In some embodiments, the mobile device produces a high dynamic range (HDR) image by (1) having its image capture module rapidly capture a succession of images at different image exposure durations, and (2) having its image processing module composite these images to produce the HDR image.
摘要翻译： 本发明的一些实施例提供了捕获并产生具有高动态范围的图像的移动设备。 为了捕获并产生高动态范围图像，一些实施例的移动设备包括新颖的图像捕获和处理模块。 在一些实施例中，移动设备通过以下方式产生高动态范围（HDR）图像：（1）使其图像捕获模块在不同的图像曝光持续时间内快速捕获一系列图像，以及（2）使其图像处理模块将这些图像复合到 产生HDR图像。
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公开(公告)号：US08605167B2
公开(公告)日：2013-12-10
申请号：US12873973
申请日：2010-09-01
IPC分类号： H04N9/73
摘要： Various techniques are disclosed for processing statistics data in an image signal processor (ISP). In one embodiment, a statistics collection engine may be configured to acquire statistics relating to auto white-balance. The statistics collection engine may receive raw Bayer RGB data acquired by an image sensor and may be configured to perform one or more color space conversions to obtain pixel data in other color spaces. A set of pixel filters may be configured to accumulate sums of the pixel data conditionally based upon YC1C2 characteristics, as defined by a pixel condition per pixel filter. Depending on a selected color space, the pixel filters may generate color sums, which may be used to match a current illuminant against a set of reference illuminants with which the image sensor has been previously calibrated.
摘要翻译： 公开了用于处理图像信号处理器（ISP）中的统计数据的各种技术。 在一个实施例中，统计收集引擎可以被配置为获取与自动白平衡有关的统计。 统计收集引擎可以接收由图像传感器获取的原始拜耳RGB数据，并且可以被配置为执行一个或多个颜色空间转换以获得其他颜色空间中的像素数据。 一组像素滤波器可以被配置为基于每像素滤波器的像素条件定义的YC1C2特性有条件地累加像素数据的和。 根据所选择的颜色空间，像素滤波器可以生成颜色和，其可以用于将当前光源与图像传感器已经被预先校准的一组参考光源相匹配。
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公开(公告)号：US20130321678A1
公开(公告)日：2013-12-05
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.
摘要翻译： 提供了由于透镜的几何特性来校正强度降低的系统和方法。 在一个示例中，一种方法包括接收图像数据的输入像素，使用图像传感器获取的图像数据。 确定输入像素的颜色分量。 通过指向外部存储器中的增益栅格来确定增益栅格。 多个网格点中的每一个都与基于输入像素的颜色选择的透镜阴影增益相关联。 识别包围输入像素的最近的一组网格点。 此外，通过内插与该组网格点中的每一个相关联的透镜遮蔽增益来确定透镜阴影增益，并将其应用于输入像素。
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7.发明申请公开(公告)号：US20130321671A1
公开(公告)日：2013-12-05
申请号：US13485101
申请日：2012-05-31
申请人： Guy Cote , D. Amnon Silverstein , Suk Hwan Lim , Sheng Lin , Haitao Guo
发明人： Guy Cote , D. Amnon Silverstein , Suk Hwan Lim , Sheng Lin , Haitao Guo
IPC分类号： H04N5/217
CPC分类号： H04N5/365
摘要： The present disclosure generally relates to systems and methods for image data processing. In certain embodiments, an image processing pipeline may be configured to receive a frame of the image data having a plurality of pixels acquired using a digital image sensor. The image processing pipeline may then be configured to determine a first plurality of correction factors that may correct each pixel in the plurality of pixels for fixed pattern noise. The first plurality of correction factors may be determined based at least in part on fixed pattern noise statistics that correspond to the frame of the image data. After determining the first plurality of correction factors, the image processing pipeline may be configured to configured to apply the first plurality of correction factors to the plurality of pixels, thereby reducing the fixed pattern noise present in the plurality of pixels.
摘要翻译： 本公开通常涉及用于图像数据处理的系统和方法。 在某些实施例中，图像处理流水线可以被配置为接收具有使用数字图像传感器获取的多个像素的图像数据的帧。 然后，图像处理流水线可以被配置为确定可修正多个像素中的每个像素以用于固定模式噪声的第一多个校正因子。 可以至少部分地基于对应于图像数据的帧的固定模式噪声统计来确定第一多个校正因子。 在确定了第一多个校正因子之后，图像处理流水线可以被配置为将多个第一校正因子应用于多个像素，从而减少存在于多个像素中的固定模式噪声。
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公开(公告)号：US08493482B2
公开(公告)日：2013-07-23
申请号：US12858922
申请日：2010-08-18
IPC分类号： H04N3/14 , H04N5/335 , H01L31/062
CPC分类号： H04N5/232 , H04N5/2258 , H04N5/23245
摘要： Various techniques are provided for processing image data acquired using a digital image sensor. In accordance with aspects of the present disclosure, one such technique may relate to the processing of image data in a system that supports multiple image sensors. In one embodiment, the image processing system may include control circuitry configured to determine whether a device is operating in a single sensor mode (one active sensor) or a dual sensor mode (two active sensors). When operating in the single sensor mode, data may be provided directly to a front-end pixel processing unit from the sensor interface of the active sensor. When operating in a dual sensor mode, the image frames from the first and second sensors are provided to the front-end pixel processing unit in an interleaved manner. For instance, in one embodiment, the image frames from the first and second sensors are written to a memory, and then read out to the front-end pixel processing unit in an interleaved manner.
摘要翻译： 提供了用于处理使用数字图像传感器获取的图像数据的各种技术。 根据本公开的方面，一种这样的技术可以涉及在支持多个图像传感器的系统中对图像数据的处理。 在一个实施例中，图像处理系统可以包括被配置为确定设备是以单个传感器模式（一个有源传感器）或双传感器模式（两个有源传感器）操作的控制电路。 当在单传感器模式下操作时，数据可以从有源传感器的传感器接口直接提供给前端像素处理单元。 当以双传感器模式操作时，来自第一和第二传感器的图像帧以交错的方式提供给前端像素处理单元。 例如，在一个实施例中，来自第一和第二传感器的图像帧被写入存储器，然后以交错的方式读出到前端像素处理单元。
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9.发明授权Method and apparatus for applying accurate parameter estimation and efficient fade detection in weighted prediction for video compression 有权用于在视频压缩的加权预测中应用准确的参数估计和高效衰落检测的方法和装置公开(公告)号：US08270483B1
公开(公告)日：2012-09-18
申请号：US12126057
申请日：2008-05-23
IPC分类号： H04N7/26
CPC分类号： H04N19/142 , H04N19/105 , H04N19/14
摘要： A method to control weighted prediction for video compression. The method comprises (A) generating statistics based upon analysis of a plurality of video frames, (B) detecting a fade condition based upon the statistics, (C) generating one or more estimated weighted prediction parameters based upon the statistics when the fade condition is detected and (D) encoding the plurality of video frames. The encoding takes into account the estimated weighted prediction parameters when generated.
摘要翻译： 一种控制视频压缩加权预测的方法。 该方法包括：（A）基于多个视频帧的分析产生统计;（B）基于统计信息检测褪色条件;（C）基于当衰落条件为褪色条件时的统计信息生成一个或多个估计加权预测参数 检测和（D）编码多个视频帧。 编码在产生时考虑了估计的加权预测参数。
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公开(公告)号：US08223264B2
公开(公告)日：2012-07-17
申请号：US12983999
申请日：2011-01-04
申请人： Lowell L. Winger , Yunwei Jia , Aaron G. Wells , Elliot N. Linzer , Simon Booth , Guy Cote
发明人： Lowell L. Winger , Yunwei Jia , Aaron G. Wells , Elliot N. Linzer , Simon Booth , Guy Cote
CPC分类号： H04N7/012 , H04N5/142 , H04N7/0135 , H04N7/0142
摘要： A method for deinterlacing a picture is disclosed. The method generally includes the steps of (A) generating a plurality of primary scores by searching along a plurality of primary angles for an edge in the picture proximate a location interlaced with a field of the picture, (B) generating a plurality of neighbor scores by searching for the edge along a plurality of neighbor angles proximate a particular angle of the primary angles corresponding to a particular score of the primary scores having a best value and (C) identifying a best score from a group of scores consisting of the particular score and the neighbor scores to generate an interpolated sample at the location.
摘要翻译： 公开了一种用于去隔行扫描图像的方法。 该方法通常包括以下步骤：（A）通过沿图像中的边缘邻近的图像的边缘沿多个主角度搜索生成多个主分数，（B）生成多个相邻分数 通过搜索沿着与具有最佳值的主分数的特定分数相对应的主角度的特定角度的多个相邻角度的边缘，以及（C）从由特定分数组成的分数组中识别最佳分数 和邻居得分，以在该位置生成内插样本。
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