在只知道图像的坐标相关的上下左右位置的情况下。对图像进行判断，宽高不能小于0，并且不能大于PLATESIZEWIDEMAX、PLATESIZEHIGHMAX -By only know the coordinates of the relative position of the upper and lower left and right of the image, the image output processing, first be judged. Image width and height of not less than zero, no more than PLATESIZEWIDEMAX, PLATESIZEHIGHMAX　.