Vision analysis for small size object imaging and grading

in this paper design and operation of a simple vision system for object imaging is described. the reported vi-sion senor is based on a ccd camera and offers the color images from the object under study and also provides quantitative information concerning the image profile. it is possible to obtain reflection and image data by using single or double light sources for object illumination. in order to test the potential of the reported vision for color grading and surface analysis of fruits some of the related results are presented in this report. for this study different objects with typical diameters of 0.5-1.5 mm are placed in front of the white light source beam and the reflectance and the transmission shading images are captured. using two light sources the reflection and image data for different sample fruits are presented in this study. theoretical analysis of the image concerning the light source, lighting di-rection, and surface characteristics are also studied by using the matlab simulation potential. in agreement with the simulation results, experimental results show that the reported method is very sensitive to the lighting effects, surface material, shape and color that can be used for color recognition and grading of different objects such as color fruits and vegetables.