To provide a built-in program development device for parallel processors for calculating the number of loops under the consideration of the number of actual processing pixels in the case of automatically generating a program for operating parallel processors, and to provides a built-in program development method for parallel processors, a built-in program development program for parallel processors, and a recording medium with the built-in program development program for parallel processors stored therein.

A loop frequency calculation part 4 calculates and determines the loop frequency of parallel processing in a parallel program for operating parallel processors on the basis of the number of reference pixels or attributes of each processing stored in the information table of a block data part 6 and the number of parallel of the parallel processors and the number of images in the main scanning direction of image data.