Patent ID: 9020297
Filing Date: 2015-04-28
Classification: G06K,G06T

Abstract:
1. A method configured for parallel computation for obtaining a first plurality of difference images and a number, n, of subsequent plurality of difference images, said method comprising: a. Obtaining a first plurality of difference images from an original image defined by a plurality of pixels, the first plurality of difference images obtained by: b. Obtaining a first down sampling anti-aliasing convolution function, DAcon(l), by convolving said plurality of blurring functions with a down sampling function and an anti-aliasing function; c. When n is larger than 1, obtaining additional down sampling anti-aliasing convolution function(s), DAcon(t), by convolving the previous down sampling antialiasing convolution function, DAcon(t-l), with said plurality of blurring functions, a down sampling function and an anti-aliasing function, beginning this step c with t =2, and repeating this step while increasing t with unitary increments until t reaches n; d. Convolving all of the down sampling anti-aliasing convolution functions, DAcon, with said original image to obtain an image(x) for each down sampling antialiasing convolution function DAcon(x); e. Obtaining the n subsequent pluralities of difference images, obtaining each plurality(x) from each image(x), wherein said blurring convolution functions are Gaussian.