| 摘要 |
A method of comparing two images (120,210) by a processing system 310 in order to determine whether they represent the same entity is disclosed (i.e. authentication). An image quality of each of a plurality of sections or regions (500,510) of a first image is assessed, whereby to assign an image quality to each of a plurality of sections of the first image. For sections of the first image that are determined to have an image quality different from (e.g. higher than) the image quality of other sections an image processing process is performed. The process comprises: configuring a matching algorithm for that section of the first image in dependence on the assigned image quality of the section; and using the configured matching algorithm to compare the section of the first image with a corresponding section of the second of the two images, whereby to generate an output indicative of whether the first and second images (e.g. photographs) represent the same entity (e.g. person). The quality could be assessed using a set of training features or by considering sharpness. The matching algorithm could use plural sections and assign a higher weight to those of higher quality. |
