Patent ID: 7920727
Filing Date: 2011-04-05
Classification: H04N

Abstract:
1. An image evaluation system, suitable for use in evaluating quality of a taken image for a reference of a user, comprises: an image register, used to store the image; an image feature generator, used to fetch at least a feature from the image; an evaluation window, used to be partitioned into a plurality of sub-windows with at least a horizontal line and a vertical line, and set a corresponding weight to each of the sub-windows according to its classification as a basis for determining the quality of the taken image, wherein each of the sub-windows further includes a plurality of ordinary windows and a plurality weighted windows, and size of the weighted windows is dynamically adjusted according to a ratio of size of the feature to that of the image; and an evaluation unit, used to calculate weighted scores corresponding to the features based on the weights corresponding to the sub-windows of the evaluation window, and calculate a sum of the weighted scores of the features as an evaluation score, thus determining the quality of the image.