SYSTEMS AND METHODS FOR VISUAL INSPECTION OF SIGNAL LIGHTS AT RAILROAD CROSSINGS

    公开(公告)号:US20240331404A1

    公开(公告)日:2024-10-03

    申请号:US18191939

    申请日:2023-03-29

    发明人: Benjamin Planche

    摘要: A system for visual inspection of signal lights at a railroad crossing includes a data source comprising a stream of images, the stream of images including images of signal lights at a railroad crossing, an inspection module configured via computer executable instructions to receive the stream of images, detect signal lights and light instances in the stream of images, encode global information relevant to ambient luminosity and return a first feature vector, encode patch information of luminosity of detected signal lights and return a second feature vector, concatenate the first feature vector with the second feature vector and return a concatenated feature vector, and decode the concatenated feature vector and provide status of the signal lights.

    IMAGE PROCESSING APPARATUS
    4.
    发明公开

    公开(公告)号:US20240312224A1

    公开(公告)日:2024-09-19

    申请号:US18583975

    申请日:2024-02-22

    申请人: DENSO TEN Limited

    IPC分类号: G06V20/58 G06T7/11

    CPC分类号: G06V20/584 G06T7/11

    摘要: An image processing apparatus includes a controller configured to: (i) perform image recognition of a camera image to identify a signal region in which a traffic light exists in the camera image, the traffic light including an arrow light; (ii) identify a candidate region of the signal region, the candidate region satisfying (a) a first condition related to a color component of the arrow light and (b) a second condition related to a luminance component of the arrow light; and (iii) determine that the arrow light of the traffic light is turned on when a size of the candidate region that has been identified is smaller than a predetermined size.

    IMAGE PROCESSING APPARATUS
    5.
    发明公开

    公开(公告)号:US20240312223A1

    公开(公告)日:2024-09-19

    申请号:US18583093

    申请日:2024-02-21

    申请人: DENSO TEN Limited

    IPC分类号: G06V20/58 G06V10/56 G06V10/60

    摘要: An image processing apparatus that identifies a light emitting state of a traffic light having a green light, a yellow light and a red light from a camera image includes a controller configured to: (i) detect, from the camera image, each of green pixels, yellow pixels, and red pixels of the green, yellow and red lights of the traffic light; (ii) identify a light emitting region and non-light emitting regions from the green pixels, the yellow pixels and the red pixels that have been detected by comparing the detected pixels to predetermined threshold values; and (iii) determine the light emitting state of the traffic light according to results of relative comparison of luminance and saturation between the light emitting region and the non-light emitting regions that have been identified.

    IMAGE PROCESSING APPARATUS
    6.
    发明公开

    公开(公告)号:US20240312063A1

    公开(公告)日:2024-09-19

    申请号:US18585116

    申请日:2024-02-23

    申请人: DENSO TEN Limited

    摘要: An image processing apparatus includes a controller that determines a light color of a traffic light from a camera image. The controller is configured to: (i) perform image recognition of the camera image to identify a signal region in which the traffic light exists in the camera image; (ii) set a plurality of different spatial intervals between detectors that detect pixels in the signal region having respective color components of respective lights included in the traffic light; (iii) generate a plurality of feature maps indicating a feature amount for an arrangement pattern of each of the respective color components based on detections of the signal region by the detectors using the plurality of different spatial intervals; and (iv) determine the light color of the traffic light based on the plurality of feature maps.