Interactive edition method and system

Abstract

The invention discloses an interactive editing method for shadow editing and highlight editing. The method is characterized by comprising the following steps: a linear illumination space is constructed after Lab decomposition of all images in a database; a nonlinear illumination space is computed and obtained; an image to be edited is subjected to the Lab decomposition to obtain a first editing image, and a first region in the first editing image is determined; a nonlinear illumination in the nonlinear illumination space which is most matched with the brightness value of the first region is computed and selected; and an image corresponding to the nonlinear illumination in the database is taken as a second editing image; a second region having a shape and a size corresponding to those of the first region is selected on the second editing image; a third region is determined by computing the boundary of the second region; the strength and the softness of the third region are regulated; and the third region and the first editing image are fused to obtain an edited image.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to a method and system for interactive shadow editing or highlight editing. Background technique [0002] With the general promotion of image acquisition equipment such as cameras, people can get various life photos more and more conveniently, but it is not only necessary to obtain artistic effect images under special lighting conditions such as stage lights or movies, photography studios, etc. A digital camera can do it. In order to be able to perform image-based rendering operations on human faces with both a certain sense of reality and a strong artistic effect, special lighting effects such as shadows and highlights are key. [0003] The vast body of work on this problem in graphics can basically be divided into two distinct classes of algorithms. The first type is the process of forward rendering in graphics. The layout of the scene, the geometry and material...

AI Technical Summary

Problems solved by technology

This method can only handle shadows with simple borders, and requires the user to give an initial shadow border

Both of the above two methods need to model the shadow, and perform different editing effects by controlling the shadow model; moreover, the existing methods for image shadow editing are complicated for the boundary when the scene, geometry, lighting and other information are unknown. images of the

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