Method for determining functionality of video camera for vehicle, involves determining aggregate number for pixel locations between edge maps, and generating error message in response to aggregate number being less than threshold

摘要

The method involves comparing like regions of edge maps for distinguishing displacement of landmark i.e. lane marker, between the edge maps, where each edge map is constructed of pixels including varying intensity values. An aggregate number of pixel locations including a different intensity value between the edge maps is determined. Determination is made whether the aggregate number is greater than a threshold for indicating the displacement of the landmark between the edge maps. An error message is generated in response to the aggregate number being less than the threshold.