Patent Document ID: 10134134
Application ID: 14399346
Patent Status: 1

Claim One:
1. A method of creating a signature from plural images for providing watermark information related to the images, the method comprising: analysing a pair of images from the plural images, each image of the pair of images containing a plurality of elements, the plurality of elements including at least one of a visual descriptor, a shape descriptor, a location descriptor, and a motion descriptor; identifying a first element in one image of the pair of images; identifying plural elements in the other image of the pair of images; dividing each image into a plurality of blocks, the plural elements comprising elements in at least one of the plurality of blocks; determining a first target block for the first element in the one image of the pair of images; matching the first element in the one image of the pair of images with a second element from the plural elements in the other image of the pair of images, the matched second element having the smallest measured distance between the first element and the second element within a second target block of the other image of the pair of images; measuring a disparity parameter (Disparity i ) between the first element and the matched second element using equation Disparity i = ( ( x i - x j ) W ) 2 + ( ( y i - y j ) H ) 2 , x i and y i being the position of the first element in the one image of the pair of images, x j and y j being the position of the matched second element in the other image of the pair of images, W being the width of the one image of the pair of images, H being the height of the one image of the pair of images; computing a signature by averaging the measured disparity parameter between the first element and the matched second element and a second measured disparity parameter, the second measured disparity parameter being measured between another element in the one image of the pair of images with another element from the plural elements in the other image of the pair of images, the computing of the signature being performed without reference to any depth signal or depth information, the signature being a vector comprising the average measured disparity parameter for each of the plurality of blocks and being a unique identifier for the pair of images; and utilizing the signature to identify the pair of images without altering the pair of images with the signature, the signature being compared to a known signature in the identifying the pair of images.