公开(公告)号：US20240314462A1

公开(公告)日：2024-09-19

申请号：US18122324

申请日：2023-03-16

Applicant: CISTA SYSTEM CORP.

Inventor： ChingJu HSIAO ,  Zhaojian LI

IPC: H04N25/63 ,  H04N17/00

CPC classification number: H04N25/63 ,  H04N17/002

Abstract: This application describes methods and systems for dark shading calibration and correction. An example method may include configuring an image sensor into a plurality of sensor states to capture a plurality of dark images, determining a dark current distribution on each of the plurality of dark images captured by the image sensor to obtain a plurality of dark current distributions respectively corresponding to the plurality of sensor states, storing the plurality of dark current distributions in a memory associated with the image sensor, capturing an image by the image sensor at a first sensor state, determining a first dark current distribution for the first sensor state of the image sensor based on the plurality of dark current distributions stored in the memory, and offsetting dark current noise on the image based on the first dark current distribution for the first sensor state of the image sensor.

公开(公告)号：US20240193736A1

公开(公告)日：2024-06-13

申请号：US18077166

申请日：2022-12-07

Applicant: CISTA SYSTEM CORP.

Inventor： Yang-Ting CHOU ,  Zhaojian LI

IPC: G06T5/50 ,  G06T5/00 ,  G06T7/20

CPC classification number: G06T5/50 ,  G06T5/002 ,  G06T5/009 ,  G06T7/20 ,  G06T2207/10024 ,  G06T2207/20021 ,  G06T2207/20076 ,  G06T2207/20208 ,  G06T2207/20221

Abstract: This application describes methods and systems for High Dynamic Range (HDR) image fusion on Low Dynamic Range (LDR) images that avoid ghosting effect. An example method may start with detecting a plurality of motion pixels on the plurality of LDR images. For each of the motion pixels, a plurality of pixel values may be obtained. Each pixel value represents a brightness of the pixel in the corresponding LDR image. The method may then construct a fusion tensor comprising a plurality of dimensions respectively corresponding to the plurality of exposure settings. Each motion pixel may be mapped to the fusion tensor based on the plurality of the pixel values of the motion pixel to obtain a fusion weight. The fusion weights of the motion pixels may provide guidance to the HDR fusion on the LDR images.

公开(公告)号：US20240185441A1

公开(公告)日：2024-06-06

申请号：US18076257

申请日：2022-12-06

Applicant: CISTA SYSTEM CORP.

Inventor： Zhaojian LI ,  Jiangtao PANG

IPC: G06T7/50 ,  G06T5/00 ,  G06T7/194

CPC classification number: G06T7/50 ,  G06T5/002 ,  G06T7/194 ,  G06T2207/20024 ,  G06T2207/20228

Abstract: This application describes apparatuses and systems for rendering the Bokeh effect using stereo vision with edge computing. An example apparatus may include a first sensor and a second sensor. The first sensor is configured to: capture a first view of a scene. The second sensor is configured to: capture a second view of the scene, and send the second view of the scene to the first sensor. The first sensor is further configured to: receive the second view of the scene, compute a depth map of the scene based on the first view of the scene and the second view of the scene; and render Bokeh effect to an image of the scene based on the depth map.

公开(公告)号：US11418692B2

公开(公告)日：2022-08-16

申请号：US17239987

申请日：2021-04-26

Applicant: CISTA SYSTEM CORP.

Inventor： Zhaojian Li ,  Jiangtao Pang

IPC: H04N5/225 ,  H04N5/265 ,  H04N13/106 ,  H04N5/235

Abstract: Provided are an image sensor with one or more image receivers for image combining, and an imaging system and method therefor. The image sensor includes an image sensor array to generate first image data for a first image; a receiver to receive, into the image sensor, second image data for a second image; an image combination circuit coupled to the image sensor array and the receiver to receive the first image data and the second image data and combine the first image data and the second image data into combined image data for a single combined image, according to one or more image combination criteria, and at least one of the first image data and the second image data; and a transmitter coupled to the image combination circuit to transmit the combined image data for the combined image from the image sensor.

公开(公告)号：US11322531B2

公开(公告)日：2022-05-03

申请号：US17130371

申请日：2020-12-22

Applicant: CISTA SYSTEM CORP.

Inventor： Zhaojian Li ,  Jiangtao Pang

IPC: H01L27/146 ,  H01L27/148

Abstract: Provided are an image sensor with one or more image receivers for image switching, and an imaging system and method therefor. The image sensor includes an image sensor array to generate first image data for a first image; a receiver to receive, into the image sensor, second image data for a second image; an image selection circuit coupled to the image sensor array and the receiver to receive the first image data and the second image data and select one of the first image data and the second image data according to one or more image selection criteria and at least one of the first image data and the second image data; and a transmitter coupled to the image selection circuit to transmit the selected one of the first image data and the second image data from the image sensor.

公开(公告)号：US20210111207A1

公开(公告)日：2021-04-15

申请号：US17130371

申请日：2020-12-22

Applicant: CISTA SYSTEM CORP.

Inventor： Zhaojian LI ,  Jiangtao PANG

IPC: H01L27/146 ,  H01L27/148

Abstract: Provided are an image sensor with one or more image receivers for image switching, and an imaging system and method therefor. The image sensor includes an image sensor array to generate first image data for a first image; a receiver to receive, into the image sensor, second image data for a second image; an image selection circuit coupled to the image sensor array and the receiver to receive the first image data and the second image data and select one of the first image data and the second image data according to one or more image selection criteria and at least one of the first image data and the second image data; and a transmitter coupled to the image selection circuit to transmit the selected one of the first image data and the second image data from the image sensor.

公开(公告)号：US10444415B2

公开(公告)日：2019-10-15

申请号：US15432629

申请日：2017-02-14

Applicant: CISTA SYSTEM CORP.

Inventor： Zhaojian Li ,  Hirofumi Komori

IPC: G02B5/20 ,  G06T3/40 ,  G02B3/00 ,  H04N9/04

Abstract: A multispectral sensing device is disclosed. The sensing device may comprise an array of pixel units. Each of the pixel units may comprise four pixels in a two by two configuration. Each of the pixels may comprise a plurality of sub-pixels. Each of the pixel units may include at least one pixel that includes at least two sub-pixels configured to detect light of different wavelengths.

公开(公告)号：US10440303B2

公开(公告)日：2019-10-08

申请号：US15865326

申请日：2018-01-09

Applicant: CISTA SYSTEM CORP.

Inventor： Dennis Tunglin Lee ,  Guangbin Zhang

IPC: H04N5/376 ,  H03K4/02 ,  H04N5/378 ,  H03K4/08 ,  H03K4/12 ,  H03K4/26 ,  H03K4/48 ,  H04N5/365

Abstract: A system is provided for generating a ramping signal. The system includes a plurality of storage circuits each including an input and an output. The output of a previous storage circuit is connected to the input of a next storage circuit. The storage circuits are configured to propagate a first enable signal based on a first control signal. The system also includes a plurality of first current generating circuits. Each first current generating circuit is coupled to the output of a corresponding storage circuit to receive the propagated first enable signal. The first current generating circuits are configured to generate a first current signal based on the propagated first enable signal.

公开(公告)号：US20180234644A1

公开(公告)日：2018-08-16

申请号：US15432629

申请日：2017-02-14

Applicant: CISTA SYSTEM CORP.

Inventor： ZHAOJIAN LI ,  HIROFUMI KOMORI

IPC: H04N5/33 ,  G06T3/40 ,  G02B3/00 ,  G02B5/20

CPC classification number: G02B5/201 ,  G02B3/0056 ,  G06T3/4015 ,  H04N9/04559

Abstract: A multispectral sensing device is disclosed. The sensing device may comprise an array of pixel units. Each of the pixel units may comprise four pixels in a two by two configuration. Each of the pixels may comprise a plurality of sub-pixels. Each of the pixel units may include at least one pixel that includes at least two sub-pixels configured to detect light of different wavelengths.

公开(公告)号：US09906745B2

公开(公告)日：2018-02-27

申请号：US14561015

申请日：2014-12-04

Applicant: CISTA SYSTEM CORP.

Inventor： Guangbin Zhang

IPC: H04N5/3745 ,  H03M1/12 ,  H03M1/18 ,  H04N5/378

CPC classification number: H04N5/3745 ,  H03M1/129 ,  H03M1/18 ,  H04N5/378

Abstract: A system and method is provided for image sensing. The image sensing system includes a comparator for comparing an input signal representing a sensed light signal from at least one pixel of the image sensing system and a reference signal. The comparator includes at least one digital transistor.