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16 条记录 (耗时 0.012 秒)

    FOCAL ADJUSTMENT OF AN AUTOMOTIVE CAMERA
    1.
    发明公开
    FOCAL ADJUSTMENT OF AN AUTOMOTIVE CAMERA 审中-公开

    公开(公告)号：EP4387255A1

    公开(公告)日：2024-06-19

    申请号：EP23214866.8

    申请日：2023-12-07

    申请人： Connaught Electronics Ltd.

    发明人： McDaid, H54 Y276

    IPC分类号： H04N23/67 ,  H04N25/531 ,  G06V20/56 ,  G06V20/58

    CPC分类号： H04N23/675 ,  H04N25/531 ,  H04N23/67

    摘要： For focal adjustment of a camera (3), a first image is captured during a first frame period (F1), wherein a plurality of rows (P) of a sensor array (11) is exposed according to a rolling shutter mode, and a second image is captured after the first frame period (F1). An area on the sensor array (11) is determined, which corresponds to a region of interest (6a, 6b, 6c, 7a, 7b, 7c), a subset (P1) of the plurality of rows (P) is determined, which contains the area, a focal adjustment period (Ta) is determined, which starts when or after all rows of the subset (P1) have been exposed. At least one focal parameter is adjusted during the focal adjustment period (Ta) according to a predefined focal setting.

    BACKGROUND LIGHT SUBTRACTION FOR INFRA-RED IMAGES
    5.
    发明公开
    BACKGROUND LIGHT SUBTRACTION FOR INFRA-RED IMAGES 审中-实审

    公开(公告)号：EP4412192A1

    公开(公告)日：2024-08-07

    申请号：EP23154105.3

    申请日：2023-01-31

    申请人： Axis AB

    发明人： Karlsson, Jenny

    IPC分类号： H04N7/18 ,  G08B13/196 ,  H04N23/20 ,  H04N23/56 ,  H04N23/74 ,  H04N25/531

    CPC分类号： H04N7/183 ,  H04N23/20 ,  H04N23/56 ,  H04N23/74 ,  H04N25/531 ,  H04N23/741 ,  H04N23/10

    摘要： The present disclosure relates to a method of performing background light subtraction in an infra-red (IR) illuminated image depicting a scene, the method comprising: providing (S702) a rolling shutter image sensor; providing (S704) an IR light source configured to be turned on and off; changing (S706) an on-off status of the IR light source a plurality of times while capturing an image; capturing (S708) two or more image frames each image frame comprising: a first set of lines of pixels comprising image data captured with the IR light turned on; a second set of lines of pixels (216) comprising image data captured with the IR light turned off; creating (S710) an IR-illuminated image; creating (S712) a non-IR-illuminated image; subtracting (S714) background light from the IR-illuminated image using pixel values in the non-IR-illuminated image.