DISTANCE MEASURING DEVICE AND DISTANCE MEASURING SYSTEM

    公开(公告)号:US20240192370A1

    公开(公告)日:2024-06-13

    申请号:US18553737

    申请日:2022-02-22

    CPC classification number: G01S17/87 G01S7/4913 G01S17/36 G01S17/48 G01S17/894

    Abstract: An error in distance measurement is reduced. The distance measuring sensor generates multiple images by receiving light in light reception periods that are synchronized with pulse train pattern light, which repeats a light emission period and a non-light emission period of two types of luminance of a bright portion and a dark portion, and have different phases from each other. A bright region detecting unit detects a bright region which is a region generated by receiving reflected light corresponding to the bright portion of the pattern light in each of the multiple images. A first distance measuring unit detects a phase difference between the emitted pattern light and the reflected light on the basis of the bright regions detected in the multiple images and calculates a first distance measurement value that is a distance to the object on the basis of the detected phase difference. A bright region selecting unit selects among the bright regions, detected in the multiple images, on the basis of image signals constituting the images. A second distance measuring unit calculates a second distance measurement value that is a distance to the object by triangulation using a position of the selected bright region in the image. A fusion unit generates a fused distance measurement value by fusing the first distance measurement value and the second distance measurement value.

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