What is edge contour?
The notion of contours is used as a tool to work on edge data. Not all edges are the same. But in many cases, e.g. objects with unimodal color distribution (i.e. one color), edges are the actual contours (outline,shape). Detect not only curves, but anything connected on the edge map. (
What is contour detection in image processing?
Using contour detection, we can detect the borders of objects, and localize them easily in an image. It is often the first step for many interesting applications, such as image-foreground extraction, simple-image segmentation, detection and recognition.
What is contour pixel?
Contour pixels distinguish objects from the background. Tracing and extracting contour pixels are widely used for smart/wearable image sensor devices, because these are simple and useful for detecting objects.