关键词: 图像处理, 岩体块度, MATLAB

Abstract: The paper established a rock image segmentation model and developed a reliable，simple and highly efficient rock fragmentation analysis system based on computer image processing technology in the MATLAB environment，which realized the acquisition of original rock image，derivation of the image resolution，image preprocessing，cutting of the fusion rocks，calculation of the rock geometry size and generation of size classification curve by the processing of computer. The system testing results showed that it had a high measurement precision，which can meet the practical requirements，and played an important rule in blasting design optimization as well.

Key words: Image processing, Rock fragmentation, MATLAB