Process for the separating prospect background of 2D cartoon animation

Abstract

A foreground and background separating method for a 2D cartoon, belonging to the image processing technology field, comprises steps of: a, dividing frames of images based on colors into a plurality of areas; b, performing video alignment on each frame of images; c, video visual angle transformation removing and generating of a panoramic video: removing the visual angle transformation of a video, and obtaining a panoramic video with a fixed visual angle; d, constructing initial background images; e, calculating background probabilities of all areas; f, descending-ordering the areas based on the background probabilities to create an area queue; g, judging whether the background probability of a first area in the area queue is larger than or equal to a threshold value, if it is, entering h orderly, and if not, exiting from the circulation and entering i; h, extracting the first area from the area queue to optimize the background image; i, judging the areas remaining in the queue as foreground areas of the frames of images; j, thereby realizing foreground and background separation. The image background image generated according to the invention can obtain small error even if the foreground is in high frequency movement.

Description

technical field [0001] The invention belongs to the technical field of image processing, in particular to a foreground and background separation method for 2D cartoon animation. Background technique [0002] Cartoon animation has a long history, and there have been a large number of popular works of art. Regardless of age, everyone has their own favorite cartoon image and style. Most of these cartoon animations are currently saved in the form of raster animations. If these existing works of art are reused, using the characters in the animation to generate new animations based on personal designs, the separation of foreground and background is an important process. After removing the background, the cartoon image can be edited in various ways such as rearranging actions and changing colors. [0003] The production process of traditional 2D cartoon animation determines the characteristics of cartoon animation: the picture is relatively simple, and the blocks are obvious. Fr...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is that in the prior art, the usual separation method of image foreground and background is to average the images of each frame, and the accuracy of this method cannot be guaranteed, and the generated background has a relatively large error in the part of the foreground that frequently moves. In order to overcome this defect, a new separation method needs to be redeveloped, so that the newly generated background, even under the frequent movement of the foreground, its error is not large

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