Image-processing device

An image-processing device, comprising:

• a gradient data generation unit which sequentially targets pixels included in an input image, and on the basis of a luminance value of a target pixel and luminance values of other surrounding pixels located around the target pixel, generates gradient data in which a pixel included in the image is represented using a first label which is a value indicating a direction toward one of the surrounding pixels having a higher luminance value than the target pixel or a second label which is a value indicating that the luminance value of the target pixel is higher than all surrounding pixels located around the target pixel;
• a plurality of region label generation units which set pixels represented by the second label as peak pixels, divide a region within the image into regions including pixels belonging to the same peak pixel on the basis of peak coordinates indicating the positions of the peak pixels, and generate region label data in which pixels included in a divided region are represented by a third label which is a value indicating that the pixels belong to the same peak pixel;
• and
• a peak pixel distribution unit which distributes the peak pixels which are a target on which computation will be executed to each of the region label generation units such that loads of computations performed by the region label generation units to divide a region within the image into regions including pixels belonging to the same peak pixel are approximately equalized.