The Method of Error Controlling on the Vectorization of Dot Matrix Image

A new vectorization method of dot matrix image based on error controlling is studied in this paper. The least-square algorithm is a main method of vectorization of dot matrix image. In the calculation of the fitting error by using the least-square algorithm, if the fitting error is in the range of threshold value, the result of vectorization will be considered to be right. So how to determine the threshold value is the key. In this paper, it has analyzed the vectorization errors of ideal bitmap by least-square algorithm and put forward the judgment formulas to evaluate recognition result. In order to complete vectorization automatically, it has presented a new method of the vectorization of dot matrix image-the least-square rolling recognition algorithm for double direction. It has solved the problem of selecting suitable dot group. The judgment formulas in this paper are scientific and accurate; the method of the vectorization is rapid and high efficient.