Abstract: The image processing in egg quality detection system mainly involves image smoothing,edge detection and image segmentation. In the present study,the vector median filtering method was applied to smooth the image to protect the information of the color image. The prewitt edge operator was used to detect the image edge. After repeated experiment,a overall image segmentation threshold was selected to separate the target egg image from the background. Results showed that the image processing technology presented in this study can be used to accurately extract image information of egg.

Key words: egg,image processing, vector median filtering, edge detection, threshold segmentation