关键词: 凹凸特性 手写体数字 笔顺编码

Abstract:

Traditional methods for the off-line recognition of hand-written digits based on skeleton coding have such defects as low speed, huge computation,and   so on. The paper proposes a new method based on convex-concave-coding, which only finds the circle and convex areas from the value-associated background    , and then combines and codes them. It needs no thinning, which reduces the possibility of errors and reiections because of the thinning distortion, and   it needs no complex skeleton tracing and curve fitting, which means it is simple and fast.  d speed rapidly.

Key words: （convex and concave feature, handwritten digits, sequence coding）