DETECTION TARGET POSITIONING DEVICE, DETECTION TARGET POSITIONING METHOD, AND SIGHT TRACKING DEVICE

    公开(公告)号:US20190147605A1

    公开(公告)日:2019-05-16

    申请号:US16182950

    申请日:2018-11-07

    Abstract: Disclosed is a detection target positioning method and device. The method comprises: acquiring an original image and pre-processing the original image to obtain a gradation of each pixel in a target gradation image corresponding to a target region including a detection target; calculating first gradation sets corresponding to rows of pixels of the target gradation image and second gradation sets corresponding to columns of pixels of the target gradation image; and determining rows of two ends of the detection target in a column direction according to the first gradation sets, determining columns of two ends of the detection target in a row direction according to the second gradation sets, and determining a center of the detection target according to the row of two ends of the detection target in the column direction and the columns of two ends of the detection target in the row direction.

    CURVED GRATING STRUCTURE, DISPLAY PANEL AND DISPLAY DEVICE

    公开(公告)号:US20180106934A1

    公开(公告)日:2018-04-19

    申请号:US15786753

    申请日:2017-10-18

    Abstract: A curved grating structure, a display panel and the display device are provided. The curved grating structure includes multiple grating strips spaced from each other. Grating intervals between adjacent grating strips are successively decreased from a center point of the curved grating structure to a terminal of the curved grating structure. The grating interval between two adjacent grating strips is a distance in a first direction between center points of the two adjacent grating strips, and the first direction is a direction perpendicular to a normal vector of the curved grating structure passing through a center point of the curved grating structure.

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