关键词: 苹果识别l, 纹理分析, 支持向量机, 特征选择

Abstract: Identification of stem and blemish is a thorny problem in apple grading.If the stem is incorrectly classified as blemish，a false grade will be assigned to the fruit.A new method based on Support Vector Machine（SVM） is proposed to identify blemish and stem on Fuji apples.An Ostu algorithm is adopted，indicating region boundary of stem and blemish.The texture features of stem and blemish are fed as input of SVM to distinguish stem and blemish.The test results on Fuji apples shows that an average of 90.7% classification accuracy is achieved by using the proposed method.

Key words: apple identification, texture analysis, support vector machines, features selection