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We propose a novel line-detection algorithm that avoids interpreting a smooth curve in an image as many straight segments. The algorithm starts from a contiguous (connected) set of edge chains extracted by the Edge Drawing Parameter Free (EDPF) algorithm such that a problem of line detection in the image space is transformed to a problem of line segments and circular arcs identified for each edge...
Estimating the distance between two vehicles is very important for transport safety. In order to keep the driving safety and avoid the traffic accidents, we proposed a rough distance measuring method using license plate to estimate the distance between two vehicles in this study. The method first uses checkerboard corner detection algorithm and the Tsai two-stage technique to calibrate the intrinsic...
Line segment is the most important feature for shape analysis and object recognition. In this study, a novel line detection method starting from endpoints is proposed. Firstly, the junctions and breakpoints are detected from the edge map. Then the connected edge pixels between any two junctions or breakpoints will be extracted, and taken as a line segment or a curve by using small eigenvalue analysis...
In this paper, a new robust corner detection method is proposed for detecting and localizing corners of planar curves. First, edges are extracted using a canny detector. Then, a local line detector is developed, and edge-pixels are labeled on the basis of the information provided by the local line detector. After egde labeling, the approximate location of the corners are determined. Finally, the minimum...
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