A METHOD AND APPARATUS FOR HIGH-SPEED CHARGE-COUPLED CMOS TDI IMAGING

    公开(公告)号:US20240022835A1

    公开(公告)日:2024-01-18

    申请号:US18025729

    申请日:2020-09-10

    CPC classification number: H04N25/77 H04N25/75 H04N25/768 H04N25/78

    Abstract: A method and apparatus (e.g. circuitry) provide high-speed charge-coupled CMOS TDI imaging based on the parallel readout operation of multiple TDI stages. A plurality (N) of output registers are reset and precharged globally in parallel ready to take charge transferred from the same number (N) of the TDI pixel registers. Each of the signal charges at respective output registers is converted to a signal voltage in parallel. Each of the analog signal voltages is then converted to a digital value in parallel by each of the number of the ADCs. The AD conversion is also performed in parallel while the next N number of the TDI registers is processed. The N output registers are linked to receive the charges from a beginning of the registers along to an end. Converting the respective signal voltages is performed by S/H capacitor array circuitry in a ping-pong fashion using CDS voltages.

    Method for generating a super-resolution image and related device

    公开(公告)号:US11688039B2

    公开(公告)日:2023-06-27

    申请号:US17290879

    申请日:2019-09-20

    CPC classification number: G06T3/4076 G06T3/4069 G06T5/50 G06T7/13

    Abstract: A method for generating a super-resolution image and related device is provided. In one aspect, the method comprises: receiving a first low-resolution image and a second low-resolution image, the first low-resolution image and second low-resolution image have a first spatial resolution and having been captured simultaneously by a pair of pixel arrays of a common image sensor, wherein the pixel arrays of the image sensor are located as to be diagonally shifted from each other by a sub-pixel increment; adaptively enhancing the first low-resolution and the second low-resolution images to generate an enhanced first low-resolution image and an enhanced second low-resolution image, respectively; mapping (e.g., non-uniformly) pixels of each of the enhanced first and second low-resolution images to a super-resolution grid having a spatial resolution greater than the first spatial resolution to generate a first intermediate super-resolution image and a second intermediate super-resolution image, respectively; and combining the first intermediate super-resolution image and second intermediate super-resolution image to generate a composite super-resolution image.

    Alignment of multiple image dice in package

    公开(公告)号:US11205670B2

    公开(公告)日:2021-12-21

    申请号:US16093544

    申请日:2016-04-15

    Abstract: An image sensor assembly and a method for assembling. The assembly includes: a ceramic package; at least one wall raised from the ceramic package, one of the walls for dividing a first surface region and a second surface region of the ceramic package; a frame supported by the ceramic package; a first set of fiducial markers and a second set of fiducial markers visible on the frame; a first die for placement onto the first surface region, the first die including an image sensor and respective fiducial markers for alignment with the first set of fiducial markers; a second die for placement onto the second surface region, the second die including an image sensor and respective fiducial markers for alignment with the second set of fiducial markers; and at least one optical filter each associated with one of the dice and supported by at least one of the walls.

    Method for reconstructing a 2D image from a plurality of X-ray images

    公开(公告)号:US11195309B2

    公开(公告)日:2021-12-07

    申请号:US16475026

    申请日:2016-11-25

    Abstract: The present invention relates to a method and a system for producing X-ray images from an object. According to this invention, a shift-and-add method is used for generating a stack of linear tomography planes each associated with a different area inside the object. A set of shift values is defined from the consideration of ensuring that said stack of linear tomography planes fills in the tomographic volume with a spatial density adequate to the application. If so required by the application, some focal planes can be selectively processed for sharpness reduction in some areas to control the depth-of-field. A focus stacking method is used to synthesize a single 2D X-ray image from UPI the tomographic stack of images. A depth map of in-focus areas from the linear tomography stack can be used for creating a 3D object model.

    METHOD OF SYNCHRONIZING A LINE SCAN CAMERA

    公开(公告)号:US20210215619A1

    公开(公告)日:2021-07-15

    申请号:US16320880

    申请日:2017-10-02

    Abstract: A method of synchronizing a line scan camera. The method comprises: obtaining line scan data of a region of interest (ROI) of a travelling surface from the line scan camera, the line scan camera being oriented perpendicular to a direction of travel of the travelling surface, the line scan data comprising a plurality of lines; identifying occurrences of a major frequency of a repeated texture on the travelling surface using characterized line scan data for each line in the plurality of lines of the line scan data; determining a period of the major frequency; and changing a line rate of the line scan camera when the determined period is different than a reference period.

    Method of synchronizing a line scan camera

    公开(公告)号:US11262316B2

    公开(公告)日:2022-03-01

    申请号:US16320880

    申请日:2017-10-02

    Abstract: A method of synchronizing a line scan camera. The method comprises: obtaining line scan data of a region of interest (ROI) of a travelling surface from the line scan camera, the line scan camera being oriented perpendicular to a direction of travel of the travelling surface, the line scan data comprising a plurality of lines; identifying occurrences of a major frequency of a repeated texture on the travelling surface using characterized line scan data for each line in the plurality of lines of the line scan data; determining a period of the major frequency; and changing a line rate of the line scan camera when the determined period is different than a reference period.

    CHARGE DEMULTIPLEXING HIGH-SPEED CMOS TIME DELAY AND INTEGRATION IMAGING

    公开(公告)号:US20230353908A1

    公开(公告)日:2023-11-02

    申请号:US18025748

    申请日:2020-10-30

    CPC classification number: H04N25/78 H04N25/768

    Abstract: Provided are apparatus, methods and techniques to perform a readout of a plurality (N) of Time Delay and Integration (TDI) pixel registers to receive respective signal charges at a plurality (N) of sense nodes (SNs). The readout uses a plurality (N) of charge steering (CST) gates to steer and demultiplex respective charges from respective pixel registers to corresponding SNs. Output is provided from the SNs for producing respective digital values (e.g. through parallel conversion using ADCs). In an embodiment, charges are transferred vertically to the CSTs for demultiplexing horizontally to the SNs. The CSTs may be configured in a multi-stage configuration to assist with good charge transfer. The CSTs may be associated with a barrier implant to assist with proper charge steering.

    METHOD FOR GENERATING A SUPER-RESOLUTION IMAGE AND RELATED DEVICE

    公开(公告)号:US20220005157A1

    公开(公告)日:2022-01-06

    申请号:US17290879

    申请日:2019-09-20

    Abstract: A method for generating a super-resolution image and related device is provided. In one aspect, the method comprises: receiving a first low-resolution image and a second low-resolution image, the first low-resolution image and second low-resolution image have a first spatial resolution and having been captured simultaneously by a pair of pixel arrays of a common image sensor, wherein the pixel arrays of the image sensor are located as to be diagonally shifted from each other by a sub-pixel increment; adaptively enhancing the first low-resolution and the second low-resolution images to generate an enhanced first low-resolution image and an enhanced second low-resolution image, respectively; mapping (e.g., non-uniformly) pixels of each of the enhanced first and second low-resolution images to a super-resolution grid having a spatial resolution greater than the first spatial resolution to generate a first intermediate super-resolution image and a second intermediate super-resolution image, respectively; and combining the first intermediate super-resolution image and second intermediate super-resolution image to generate a composite super-resolution image.

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