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Real-time drawing method based on nonuniform sampling three-dimensional object reflection

A non-uniform sampling, three-dimensional object technology, applied in 3D image processing, image data processing, instruments, etc., to achieve the effect of real-time performance

Inactive Publication Date: 2014-06-25
BEIHANG UNIV
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Problems solved by technology

[0014] The problem solved by the technology of the present invention is: compared with the traditional three-dimensional object reflection rendering, the real-time rendering of three-dimensional object reflection based on non-uniform sampling uses the deformation template to control and reconstruct the sampling mode of the low-resolution image, thereby realizing efficient reflection rendering Calculation, which improves the realism of the drawing effect

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  • Real-time drawing method based on nonuniform sampling three-dimensional object reflection
  • Real-time drawing method based on nonuniform sampling three-dimensional object reflection
  • Real-time drawing method based on nonuniform sampling three-dimensional object reflection

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Embodiment Construction

[0028] For the specific flow of the three-dimensional object reflection rendering algorithm of the present invention, see figure 2 , the implementation method is as follows

[0029] Step 1: Obtain a deformed sampling template

[0030] When observing an object under normal circumstances, the focus of human visual attention will stay on one or more special areas of the object, which are called visual focus areas here. Non-uniform sampling is about giving the focal area of ​​vision a higher resolution than the rest of the image. The deformation process of the sampling template in the present invention is to firstly construct a regular grid map of g*h, where a circle is manually specified, and the area inside the circle is the corresponding visual focus area in reflection. The center of the circle is O, which is the origin of the coordinate system of the current circle. For any grid point P in the circle, move it along the OP direction for a distance of F(P); do similar movemen...

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Abstract

The invention provides a real-time drawing method based on nonuniform sampling three-dimensional object reflection. The method comprises the following steps of acquiring a sampling templete of a reflected object image, generating a reflected object nonuniform sampling deformation pattern according to the sampling templete, and finally, drawing the reflection effect in the scene by the deformation pattern reconstructed nonuniform sampling image. The algorithm for automatically generating the sampling templete can draw the reflection phenomenon in real time. The reflection in the scene is more realistic when being drawn under the condition of low overall resolution (small reflection calculated amount), thereby achieving the goal of enhancing sense of reality.

Description

technical field [0001] The invention relates to a real-time rendering method based on non-uniform sampling three-dimensional object reflection. Background technique [0002] Illumination calculation has always been one of the important techniques of realistic rendering in computer graphics, and reflection phenomenon is the core content of illumination model. Reflection is so important because it not only shows aesthetic value in the rendering result, but also reveals the geometric information of the object, such as the shape of the object, the positional relationship between objects, etc. A lot of research has been done on the real-time rendering of reflections in the scene, but a method that is both effective and efficient has not yet been found. Therefore, the real-time reflection rendering of three-dimensional objects has always been a hot spot in realistic graphics rendering, but it is also a difficult point. [0003] Reflection drawing in the scene means that these as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T15/50
Inventor 王莉莉章二林陈益郝爱民
Owner BEIHANG UNIV
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