Interactive edition method and system

An interactive and editing technology, applied in the field of image processing, which can solve problems such as the helplessness of images

Inactive Publication Date: 2009-04-01
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Interactive edition method and system
  • Interactive edition method and system
  • Interactive edition method and system

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Embodiment Construction

[0091] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0092] refer to figure 1 , showing an embodiment of an interactive editing method, which may include the following steps:

[0093] Step 101, performing Lab decomposition on all images in the database to construct a linear lighting space;

[0094] When performing step 101, the database selected by the method of the present invention may include images of multiple faces under different illumination conditions, and first process the images in the database to obtain a quotient map that only reflects illumination information as an illumination component. After Lab decomposition of all the images in the database, the illumination components of all images are proposed, the illu...

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PUM

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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...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06T5/50
Inventor 戴琼海武迪谢旭东
Owner TSINGHUA UNIV
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