IMAGE RECOGNITION AND FOCUS ADJUSTMENT USING WEIGHTED IMAGE DIFFERENCE INFORMATION

An image recognition device includes a detection unit which is configured to detect a first difference between partial information of at least a part of the first image information and the reference information and to detect a second difference between partial information of at least a part of the second image information and the reference information. A recognition unit is configured to recognize a first area corresponding to the reference image in the first image information. A calculation unit is configured to calculate a determination value based on a reference area in the second image information corresponding to the first area by weighting the second difference. The recognition unit is configured to recognize a second area corresponding to the reference image in the second image information based on at least one of the second difference and the determination value.