Image processing device, image processing method, and non-transitory computer readable medium for image processing

An image processing device that executes image processing by each object of an object group in which a plurality of objects are connected to each other in a directed acyclic graph form, the image processing device comprising:

• a device memory;
• a central processing unit (CPU) comprising a plurality of processor cores;
• and
• a graphics processing unit (GPU) comprising an internal memory, the GPU being configured to perform image processing on image data stored in the internal memory,
• wherein the CPU is configured to execute:
• a division unit configured to divide image data as an image processing target into division image data having a first size;
• a subdivision unit configured to subdivide the division image data into subdivision image data having a second size smaller than the first size for each partial processing which is image processing to be performed on the division image data, the division image data corresponding to the partial processing which is determined as executable processing based on a pre-and-post dependency relationship;
• and
• a controller configured to perform control for causing a plurality of computation devices to execute subdivision partial processing which is image processing to be performed on the subdivision image data, in parallel,
• wherein the plurality of computation devices comprises the GPU and the plurality of processor cores of the CPU, and
• wherein the subdivision partial processing is disabled for the GPU.