公开(公告)号：US11979655B2

公开(公告)日：2024-05-07

申请号：US17490595

申请日：2021-09-30

申请人： GM Global Technology Operations LLC

发明人： Kathleen Marie Schuetz ,  Andrew W. Averhart

IPC分类号： H04N7/18 ,  B60R11/04 ,  G06T7/00 ,  H04N23/60 ,  B60R11/00

CPC分类号： H04N23/64 ,  B60R11/04 ,  G06T7/0002 ,  B60R2011/0026 ,  G06T2207/30168 ,  G06T2207/30252

摘要： Method of detecting and overcoming degradation of image quality during a weather event and activation of windshield wipers. The method takes a high-contrast region of interest (ROI) of an image captured by a camera of a vehicle vision system, applies a Laplacian Operator that focuses on the pixel level in the ROI, and calculates a variance of the Laplacian. Images having an ROI below a predetermined variance threshold are classified or flagged as a low-quality image. Once a low-quality image is flagged, the camera settings can be readjusted in a feedback loop to compensate for the loss in quality of the captured image. This method may be stored as a software routine and implemented by a vision control module of the vision system.