Determination methods of content uniformity in preparations of Chinese materia medica Quality evaluation method for Chinese medicine based on color grading Detecting Chlorophyll Content of Tomato Leaves with Technology of Computer Vision Real-time Tree Image Acquisition and Recognition System Based on Machine Vision Obtaining Information of Cotton Population Chlorophyll by Using Machine Vision Technology Acquired Chlorophyll Concentration of Cotton Leaves with Technology of Machine Vision Clustering Fusion for Preharvest Cotton Grades Based on Image Features