Patent ID: 9025051
Filing Date: 2015-05-05
Classification: G06K,H04N

Abstract:
1. A method comprising: causing reception of a first image frame from video data, wherein the first image frame comprises at least two sets of two or more interest points; causing reception of a second image frame from the video data, wherein the second image frame comprises the two sets of two or more interest points in a different location; tracking a difference in location of the two or more interest points from the first image frame to the second image frame; calculating a scaling factor representing a relative difference in placement of the two or more interest points; transforming the second image frame by applying the scaling factor; and causing presentation of the transformed second image frame, wherein the transformed second image frame is a crop area of an image area, the crop area being selected such that in the crop area, a ratio of distances between the two sets of two or more interest points remains constant.