MATLAB language, like BASIC and C language, specifies the arithmetic operators, conditional operators, relational operators, logical operators and assignment operators of the matrix, and most of these operators can be copied to arrays and arrays without change. In operation. Some arithmetic operators can be used for operations between arrays by adding ".". In addition, it does not need to define the dimensions of the array, and provides matrix functions, special matrix special library functions, so that it is very concise, efficient and convenient when solving digital image processing problems, which is not comparable to other high-level languages Than.