An image processing device including an image processing section having: one or more image processing modules, each image processing module having an image processing engine and a control section; and one or more buffer modules having a buffer for storing image data. The image processing module is realized by a program, which corresponds to the image processing engine, and a program, which corresponds to the control section, being executed by a CPU of the image processing device, and a portion of or an entirety of the program corresponding to the control section is used in common for, among the plurality of types of image processing modules, image processing modules whose units of writing image data to the buffer of the buffer module connected at the following stage of its own module are the same.