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公开(公告)号：US12244943B2
公开(公告)日：2025-03-04
申请号：US18195208
申请日：2023-05-09
Applicant: CISTA SYSTEM CORP.
Inventor： Yang-Ting Chou , Zhaojian Li
Abstract: This application describes method and apparatus for HDR+ using M×N-cell sensors. An example apparatus includes a plurality of pixel groups, each pixel group having M×N pixels configured with color filters of a same color such that the M×N pixels in each pixel group capture a same color. M and N are integers greater than one, and each pixel is represented by a first number of bits. The example apparatus further include one or more processors configured to: capture, through the plurality of pixel groups, a plurality of frames of a scene using a short-exposure setting; merge the plurality of frames into an HDR image; and perform tone mapping on the HDR image to reduce a dynamic range of the super-pixels of the HDR image into a low dynamic range (LDR) image, wherein each pixel in the LDR image is represented with the first number of bits.
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公开(公告)号：US12217433B2
公开(公告)日：2025-02-04
申请号：US17940891
申请日：2022-09-08
Applicant: CISTA SYSTEM CORP.
Inventor： Yang-Ting Chou , Zhaojian Li
IPC: G06T7/11 , G06T3/4015 , G06T5/20 , G06T7/90
Abstract: This application describes systems and methods for detecting depth in deep trench isolation with semiconductor devices using test key transistors. An method comprises: capturing, by an image sensor, an image; generating a plurality of chrominance channels by converting the image into luminance-chrominance space; performing homogeneous region segmentation on the plurality of chrominance channels to generate one or more regions of interest in the plurality of chrominance channels; and projecting the regions of interest onto eigen-illuminant images to determine gray color pixels on the image, wherein the eigen-illuminant images are generated via performing a machine learning algorithm on a training set of images captured by the image sensor.
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