Abstract: An image matching technique locates feature points in a template image such as a logo and then does the same in a test image. Feature points of a template image are determined under various transformations and used to determine a set of composite feature points for each template image. The composite feature points are used to determine if the template image is present in a test image.

Abstract: An image matching technique locates feature points in a template image such as a logo and then does the same in a test image. Classifiers are trained for multiple template images and the classifiers are used to evaluate a match between a template image and a test image.

Abstract: A computer-implemented method for determining whether a first image contains at least a portion of a second image, includes: dividing set first image into multiple image regions; for a particular image region of the multiple image regions, determining a particular set of feature points associated with the particular image region; and attempting to match feature points in the particular set of feature points with second feature points associated with the second image to determine whether the particular image region of the first image contains at least a portion of the second image, wherein the first image is considered to contain at least a portion of a second image when the particular image region of the first image contains at least a portion of the second image.

Abstract: An image matching technique locates feature points in a template image such as a logo and then does the same in a test image. Feature points of a template image are determined under various transformations and used to determine a set of composite feature points for each template image. The composite feature points are used to determine if the template image is present in a test image. A covering set for a template image is used to optimize processing of test images.

Abstract: A method includes acquiring an image from a user; analyzing the image to determine whether it includes information associated with a brand reference; producing an augmented image based on the image; and posting the augmented image to a social networking service (SNS) associated with the user. The augmented image may include a graphical overlay, a frame, a comment, and a hyperlinked textual comment, cropping of the image, blurring a portion of the image, applying a spotlighting effect to a portion of the image. The method may determine a measure of influence of a user on a brand based on a number of interactions by other users with the augmented image; and a number of images posted by the user that are associated with the brand.