Interactive texture obtaining system and method for portable device

Abstract

The technical scheme of the invention comprises an interactive texture obtaining system and method for a portable device. The method comprises the steps of acquiring an image of flash texture and an image of non-flash texture; carrying out separation according to a separation parameter input by a user; creating a tangent vector based on a pixel difference of new light and dark images and calculating an initial value of a normal image; calculating the initial value of a diffuse reflection coefficient image; calculating the initial value of a highlight index image based on a highlight coefficient input by the user; calculating the initial value of a mirror image reflection coefficient image, and acquiring the final image of non-flash texture according to a highlight separation module, a normal image module, a diffuse reflection module and a highlight index module; and calculating a texture mapping parameter by using a nonlinear optimization technology, thereby generating a texture map. The method has the beneficial effects that the image of flash texture and the image of non-flash texture are collected by use of the portable devices such as a mobile phone and a digital single lens reflex, the more real texture map is generated interactively, and the existing problems that the texture production cycle is long, the cost is high and the precision is low in the fields of game production, television animation and the like are solved.

Description

technical field [0001] The invention relates to a system and method for acquiring interactive materials of a portable device, belonging to the field of graphics and image processing. Background technique [0002] In recent years, some progress has been made in using a single image to obtain material appearance properties and generate material maps. For example, technicians in the industry use CrazyBump to calculate Normal maps; in the field of research, Microsoft Research Asia has developed an interactive Material acquisition system AppGen. However, related systems all assume that the input single image has no obvious highlights, which limits the application of such methods. On the other hand, it is difficult to produce rendering effects similar to real lighting conditions with the material maps restored by this method. [0003] YUV is a color coding method adopted by the European television system, and is a color space adopted by PAL and SECAM analog color television syst...

AI Technical Summary

Problems solved by technology

However, related systems all assume that the input single image has no obvious highlights, which limits the application of such methods

On the other hand, it is difficult to produce rendering effects similar to real lighting conditions with the material maps restored by this method

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