METHOD OF OPERATING IMAGE PROCESSOR GENERATING TOP- DOWN HEAT MAP AND ELECTRONIC DEVICE HAVING THE IMAGE PROCESSOR

Disclosed is an operating method of an image processor communicating with a memory device that includes receiving raw image data from the memory device, receiving first to n-th filter data from the memory device, generating first to n-th heat maps based on a convolution neural network (CNN) operation of the first to n-th filter data and the raw image data, extracting a first region of interest (ROI) from a first heat map among the first to n-th heat maps, extracting a first portion corresponding to the first ROI from a second heat map among the first to n-th heat maps, and generating a first top-down heat map by applying the first portion of the second heat map to the first ROI of the first heat map. ‘n’ is a natural number greater than ‘2’.