Patent Document ID: 8805112
Application ID: 13640458
Patent Status: 1

Claim One:
1. A method for determining if a test image is either sharp or blurred, the method comprising the steps of; training a sharpness classifier to discriminate between sharp and blurred images, the sharpness classifier is trained based on a set of training sharpness features computed from a plurality of training images; and applying the trained classifier to the test image to determine if the test image is sharp or blurred based on a set of test sharpness features computed from the test image; wherein, the set of training sharpness features for each training image and the set of test sharpness features for each test image are computed by (i) preprocessing the respective image; (ii) generating a high pass image from the preprocessed image; (iii) generating a band pass image from the preprocessed image; (iv) identifying textured regions in the high pass image; (v) identifying texture regions in the band pass image; and (vi) computing the set of sharpness features from the identified textured regions.