A reptile with Alterable window for Image boundary tracing

Boundary Tracing method is an important preprocessing instrument for image recognition and image measurement. But the traditional reptile boundary tracing method exits a conflict between veracity and speed. This paper integrates the speediness of small window reptile and the veracity of big window reptile, and presents a new reptile with memory and alterable window for image boundary tracing. The window of the reptile is neatly altered according to the tracing requirement, and it fills the breakpoint in the rule of Minimum Distance from Pixels Center to Beeline. The method effectively solves the conflict between veracity and speed, and has well done with the problems such as trap and embranchment. The experiments for this method indicate that it has satisfying results.