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1. 发明申请

US20130321673A1 Systems and Methods for Determining Noise Statistics of Image Data 有权
标题翻译：确定图像数据噪声统计的系统和方法
公开(公告)号：US20130321673A1
公开(公告)日：2013-12-05
申请号：US13485299
申请日：2012-05-31
申请人： Suk Hwan Lim , D. Amnon Silverstein , Mark A. Zimmer , Guy A. Cote
发明人： Suk Hwan Lim , D. Amnon Silverstein , Mark A. Zimmer , Guy A. Cote
IPC分类号： H04N5/217
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。

2. 发明授权

US08953882B2 Systems and methods for determining noise statistics of image data 有权
标题翻译：用于确定图像数据噪声统计的系统和方法
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
IPC分类号： G06K9/00 , H04N5/217
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。

3. 发明申请

US20130322746A1 SYSTEMS AND METHODS FOR YCC IMAGE PROCESSING 有权
标题翻译： YCC图像处理系统与方法
公开(公告)号：US20130322746A1
公开(公告)日：2013-12-05
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
IPC分类号： G06K9/40
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 chromanoise 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; 和色度降低逻辑。

4. 发明授权

US09025867B2 Systems and methods for YCC image processing 有权
标题翻译： YCC图像处理系统和方法
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
IPC分类号： G06K9/00 , G06T1/20 , G06T3/40
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。

5. 发明申请

US20130321679A1 SYSTEMS AND METHODS FOR HIGHLIGHT RECOVERY IN AN IMAGE SIGNAL PROCESSOR 有权
标题翻译：图像信号处理器中亮度恢复的系统和方法
公开(公告)号：US20130321679A1
公开(公告)日：2013-12-05
申请号：US13485199
申请日：2012-05-31
申请人： Suk Hwan Lim , David Hayward , D. Amnon Silverstein
发明人： Suk Hwan Lim , David Hayward , D. Amnon Silverstein
IPC分类号： H04N9/68
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。

6. 发明申请

US20130321678A1 SYSTEMS AND METHODS FOR LENS SHADING CORRECTION 有权
标题翻译：镜头校正校正系统及方法
公开(公告)号：US20130321678A1
公开(公告)日：2013-12-05
申请号：US13485235
申请日：2012-05-31
申请人： Guy Cote , Joseph Anthony Petolino, JR. , Suk Hwan Lim , D. Amnon Silverstein
发明人： Guy Cote , Joseph Anthony Petolino, JR. , Suk Hwan Lim , D. Amnon Silverstein
IPC分类号： H04N9/64 , G06K9/00
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。

7. 发明申请

US20130321671A1 SYSTEMS AND METHOD FOR REDUCING FIXED PATTERN NOISE IN IMAGE DATA 审中-公开
标题翻译：用于减少图像数据中固定图案噪声的系统和方法
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。

8. 发明授权

US11089247B2 Systems and method for reducing fixed pattern noise in image data 有权
公开(公告)号：US11089247B2
公开(公告)日：2021-08-10
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 , 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.

9. 发明授权

US08872946B2 Systems and methods for raw image processing 有权
标题翻译：原始图像处理的系统和方法
公开(公告)号：US08872946B2
公开(公告)日：2014-10-28
申请号：US13485056
申请日：2012-05-31
申请人： Guy Cote , Sheng Lin , Suk Hwan Lim , D. Amnon Silverstein , David Hayward , Simon Wolfenden Butler , Joseph Anthony Petolino, Jr. , Joseph P. Bratt
发明人： Guy Cote , Sheng Lin , Suk Hwan Lim , D. Amnon Silverstein , David Hayward , Simon Wolfenden Butler , Joseph Anthony Petolino, Jr. , Joseph P. Bratt
IPC分类号： H04N5/217
CPC分类号： H04N5/217 , H04N5/2176 , H04N5/357
摘要： Systems and methods for processing raw image data are provided. One example of such a system may include memory to store image data in raw format from a digital imaging device and an image signal processor to process the image data. The image signal processor may include data conversion logic and a raw image processing pipeline. The data conversion logic may convert the image data into a signed format to preserve negative noise from the digital imaging device. The raw image processing pipeline may at least partly process the image data in the signed format. The raw image processing pipeline may also include, among other things, black level compensation logic, fixed pattern noise reduction logic, temporal filtering logic, defective pixel correction logic, spatial noise filtering logic, lens shading correction logic, and highlight recovery logic.
摘要翻译：提供了处理原始图像数据的系统和方法。这种系统的一个示例可以包括存储器，以存储来自数字成像设备的原始格式的图像数据和图像信号处理器来处理图像数据。图像信号处理器可以包括数据转换逻辑和原始图像处理流水线。数据转换逻辑可以将图像数据转换为带符号格式以保护来自数字成像装置的负噪声。原始图像处理流水线可以至少部分地以签名格式处理图像数据。原始图像处理流水线还可以包括黑电平补偿逻辑，固定图案噪声降低逻辑，时间滤波逻辑，缺陷像素校正逻辑，空间噪声滤波逻辑，透镜阴影校正逻辑和高亮恢复逻辑。

10. 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.

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