Method and device for video scene composition including graphic elements

Abstract

This invention relates to a method and device for obtaining upscaled video frames including 2D graphic elements from primary video objects of smaller format, while ensuring no degradation of said 2D graphic elements will take place. To this end, separate and parallel processes are performed on video frames and on 2D graphic elements. The first process consists of generating rendered frames from said primary video objects, said rendered frames being afterwards upscaled to the desired output video format. The second process consists of directly rendering in said output format the 2D graphic elements by using a drawing algorithm ensuring no degradation of said 2D graphic elements will take place. In a final step, rendered 2D graphic elements are mapped on the upscaled video frames. Compared with an upscaling performed on video frames including 2D graphic elements which leads to upscaled video frames including degraded 2D graphic elements, this method yields upscaled video frames including 2D graphic elements of good resolution.

Dependencies are inferred from the claim text.