Now,most the measuring of appearance quality of rice in our country still relies on naked eyes, which lacks objectivity and repetitiveness,so that the rice with high rate of chalkiness, the broken grain , the crude grain and the rice with ill speckle and mildew go into the market, at the same time, it reduce the competition of Chinese native rice.To compensate these weaknesses, this research selected a kind of common rice and developed a Visual Studio 2005 assessment system of the appearance quality ...