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21.发明申请公开(公告)号：US20140010480A1
公开(公告)日：2014-01-09
申请号：US14023359
申请日：2013-09-10
Applicant: Apple Inc.
Inventor： Guy Cote , D. Amnon Silverstein , Suk Hwan Lim
IPC: G06T1/20
CPC classification number: G06T1/20 , H04N17/002
Abstract: Systems and methods are provided for selectively performing image statistics processing based at least partly on whether a pixel has been clipped. In one example, an image signal processor may include statistics collection logic. The statistics collection logic may include statistics image processing logic and a statistics core. The statistics image processing logic may perform initial image processing on image pixels, at least occasionally causing some of the image pixels to become clipped. The statistics core may obtain image statistics from the image pixels. The statistics core may obtain at least one of the image statistics using only pixels that have not been clipped and excluding pixels that have been clipped.
Abstract translation: 系统和方法被提供用于至少部分地基于是否已经剪切像素来选择性地执行图像统计处理。 在一个示例中，图像信号处理器可以包括统计信息收集逻辑。 统计信息采集逻辑可以包括统计图像处理逻辑和统计核心。 统计图像处理逻辑可以对图像像素执行初始图像处理，至少偶尔导致一些图像像素被削波。 统计核心可以从图像像素获取图像统计。 统计核心可以仅使用未被裁剪的像素并且排除已经被裁剪的像素来获得至少一个图像统计信息。
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公开(公告)号：US12177586B2
公开(公告)日：2024-12-24
申请号：US18330973
申请日：2023-06-07
Applicant: Apple Inc.
Inventor： Guy Cote , D. Amnon Silverstein , Suk Hwan Lim , Sheng Lin , Haitao Guo
IPC: H04N25/67
Abstract: 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 apply the first plurality of correction factors to the plurality of pixels, thereby reducing the fixed pattern noise present in the plurality of pixels.
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公开(公告)号：US20230336888A1
公开(公告)日：2023-10-19
申请号：US18330973
申请日：2023-06-07
Applicant: Apple Inc.
Inventor： Guy Cote , D. Amnon Silverstein , Suk Hwan Lim , Sheng Lin , Haitao Guo
IPC: H04N25/67
CPC classification number: H04N25/67
Abstract: 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.
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公开(公告)号：US20220014697A1
公开(公告)日：2022-01-13
申请号：US17377308
申请日：2021-07-15
Applicant: Apple Inc.
Inventor： Guy Cote , D. Amnon Silverstein , Suk Hwan Lim , Sheng Lin , Haitao Guo
IPC: H04N5/365
Abstract: 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.
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公开(公告)号：US20210319536A1
公开(公告)日：2021-10-14
申请号：US16846904
申请日：2020-04-13
Applicant: Apple Inc.
Inventor： Ching E. Ho , D. Amnon Silverstein
Abstract: Some embodiments relate to sharpening segments of an image differently based on content in the image. Content based sharpening is performed by a content image processing circuit that receives luminance values of an image and a content map. The content map identifies categories of content in segments of the image. Based on one or more of the identified categories of content, the circuit determines a content factor associated with a pixel. The content factor may also be based on a texture and/or chroma values. A texture value indicates a likelihood of a category of content and is based on detected edges in the image. A chroma value indicates a likelihood of a category of content and is based on color information of the image. The circuit receives the content factor and applies it to a version of the luminance value of the pixel to generate a sharpened version of the luminance value.
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Patent Agency Ranking
公开(公告)号：US20200320661A1
公开(公告)日：2020-10-08
申请号：US16376414
申请日：2019-04-05
Applicant: Apple Inc.
Inventor： Sheng Lin , David R. Pope , D. Amnon Silverstein
Abstract: Embodiments relate to image signal processors (ISP) that include one or more auto-focus circuits. Each of the auto-focus circuits may be connected to an image sensor and may be separate from a statistics circuit and other image processing pipelines of the ISP. An image sensor may include one or more focus pixels that are used to generate data for auto-focusing. The auto-focus circuit may extract the focus pixel values and generate a signal to control the lens position of the image sensor. Each image sensor may include a separate auto-focus circuit. When other image processing pipelines of the ISP are processing the image data from one image sensor, the auto-focus circuit for another image sensor may continue to generate focus signals that control the lens position of the other image sensor. The other image sensor may be in standby but may continue to remain in focus.
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公开(公告)号：US20200053378A1
公开(公告)日：2020-02-13
申请号：US16100809
申请日：2018-08-10
Applicant: Apple Inc.
Inventor： Muge Wang , D. Amnon Silverstein
IPC: H04N19/513 , H04N19/176 , G06T5/00 , G06T3/00
Abstract: Embodiments of the present disclosure relate to autofocusing of images using motion vectors generated by an image signal processor of a device. An image being processed may include one or more motion detection windows associated with a motion vector as well as one or more autofocus windows. An autofocus window that follows a motion detection window by at least a threshold vertical distance may be selected, for example, to account for a period of time or latency for determining a motion vector of the motion detection window. The device may perform autofocusing by shifting location of the selected autofocus window.
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公开(公告)号：US09911177B2
公开(公告)日：2018-03-06
申请号：US14841400
申请日：2015-08-31
Applicant: Apple Inc.
Inventor： Suk Hwan Lim , D. Amnon Silverstein
CPC classification number: G06T3/40 , H04N5/213 , H04N7/0117 , H04N9/70
Abstract: An image processing pipeline may apply chroma suppression to image data at a scaler implemented in the image processing pipeline. Image data collected for an image may be received at a scaler that is encoded in a color space that includes a luminance component and chrominance components. When resampling the image data to generate a different size of the image, the scaler may attenuate the chrominance components of the image data according to the luminance component of the image data. The scaler may also perform dot error correction and convert the image data from one subsampling scheme to another.
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公开(公告)号：US09911174B2
公开(公告)日：2018-03-06
申请号：US14836915
申请日：2015-08-26
Applicant: Apple Inc.
Inventor： Suk Hwan Lim , Christopher L. Mills , D. Amnon Silverstein , David R. Pope , Sheng Lin
CPC classification number: G06T1/20 , G06T1/60 , G06T3/4015 , H04N5/23229 , H04N5/3765 , H04N5/917 , H04N9/045
Abstract: An image processing pipeline may process image data at multiple rates. A stream of raw pixel data collected from an image sensor for an image frame may be processed through one or more pipeline stages of an image signal processor. The stream of raw pixel data may then be converted into a full-color domain and scaled to a data size that is less than an initial data size for the image frame. The converted pixel data may be processed through one or more other pipelines stages and output for storage, further processing, or display. In some embodiments, a back-end interface may be implemented as part of the image signal processor via which image data collected from sources other than the image sensor may be received and processed through various pipeline stages at the image signal processor.
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公开(公告)号：US09811892B1
公开(公告)日：2017-11-07
申请号：US15198414
申请日：2016-06-30
Applicant: Apple Inc.
Inventor： D. Amnon Silverstein , David R. Pope , Simon W. Butler , Maxim W. Smirnov
CPC classification number: G06T5/40 , G06T3/4007 , G06T3/4023 , G06T5/003 , G06T5/20 , G06T5/50 , G06T2207/10024 , G06T2207/20016 , G06T2207/20221
Abstract: Embodiments of the present disclosure generally relate to image signal processing logic, and in particular, to separating an undecimated image signal data to create two components with lower resolution and full-resolution, generating an interpolation guidance information based on the two components created by separation, forming a difference image data representing the difference between the chroma and luma values of each pixel and its neighboring pixels, and merging the processed image data from the processing pipelines with the unprocessed image data using the interpolation guidance information generated. The generation of the interpolation guidance information is based on determining distances between pixel values from a group comprising pixels from interpolation nodes, pixels diagonally located adjacent to the interpolation nodes, pixels horizontally adjacent to the interpolation nodes, and pixels vertically adjacent to the interpolation nodes.
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