| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology of detecting a regular pattern in an image without designating the image characteristics in advance.SOLUTION: An image processing device includes: a luminance gradient vector calculation part 11 which calculates a luminance gradient vector showing characteristics in luminance change every partial area of an inputted image; a local integration part 12 generating a local integrated area integrating one or more partial areas on the basis of similarity of luminance gradient vectors; a global integration part 13 generating an integrated area integrating one or more than one local integrated areas on the basis of similarity of characteristics of a local integrated area (local integrated area characteristic) calculated on the basis of the luminance gradient vector in the local integrated area; and a regular pattern determination part 14 which determines whether or not the integrated area has a regular pattern on the basis of distribution characteristics of the luminance gradient vectors in the integrated area.SELECTED DRAWING: Figure 1 |
