To provide an image processor for efficiently using limited hardware resources, such as a memory, by sharing a part of the memory used for performing functions of the image processor in a plurality of processes.

In the image processor, a first process 110 has a first program loading means 111 for loading a program related to a service layer 131 and a program related to an application common layer 132 to a memory 100, and a second process 120 has a second program loading means 124 for loading a program related to an application specific layer 133 to the memory 100.