Introduction - If you have any usage issues, please Google them yourself
Straight line detection is still a challenging task in image processing. Though many methods have been put forward
before, most of them have some limitations. In this paper, we propose a novel method for straight line detection based on
chain codes. Different the former methods based on chain codes, this method doesn’t rely too much on the
Freeman’s criteria. A more robust and reasonable criterion is adopted for detection, and an algorithm is presented to
make this criterion works. Then we seek for a solution to the problem of corner points locating error that exists in all the
chain codes tracking methods. We also suggest a criterion for correcting corner points, and present a strategy which can
save computation time. The results show that our method has better performance than the traditional methods.
Keywords: straight line detection, corner points correction, chain codes