Computing method of video fluid height

Abstract

The invention discloses a computing method of a video fluid height. The computing method comprises the following steps: firstly, initializing motion vectors of a fluid according to fluid motion features; utilizing LBM to compute the height of fluid particles in accordance with a result of the motion vectors; denoising and smoothing the height; utilizing LBM to perform recurrence on the height of continuous multiframes to obtain a height computing result with physical motion features of the fluid according to the continuity of the fluid motion; utilizing a linear interpolation of fluid particle distribution functions to obtain a height result of uniform changes of continuous motion fluids; and finally correcting the fluid height by using intermediate frames. The computing method provided by the invention is simple, convenient and fast. By using the computing method, a fluid height field of continuous changes can be obtained, and a real-time height result is produced. The computing method can be suitable for constructing virtual scenes of natural landscapes and has an application value; and with the adoption of the computing method, the real-time interaction of the fluid motion in the virtual scenes can be realized effectively, and the poor real-time capability in reconstruction based on a vision method is overcome.

Description

technical field [0001] The invention relates to a calculation method for video fluid height. Background technique [0002] At present, in the research of augmented reality, the research on the combination of virtual and real rigid bodies has achieved preliminary results. For scenes containing fluids such as water, smoke, clouds, and fire, because the fluids are strong textures, there are occlusions and Therefore, there are certain challenges in the research of fluid augmented reality technology, and the achievements in this research are not significant enough. Fluid reconstruction technology is a key issue in the research. How to quickly and accurately calculate the fluid height and establish a realistic and interactive fluid natural landscape augmented reality scene is still a very challenging topic in this field. Its research has Important practical significance and application value. [0003] With the development of image processing and computer vision technology, some ...

AI Technical Summary

Problems solved by technology

The main problems in the height calculation method based on motion characteristics are: it is difficult to determine the motion characteristics of objects; the determination of camera parameters usually adopts offline batch processing methods. The online method is completed, so it cannot meet the real-time requirements

[0007] Some researchers use SFS and fluid motion vectors to conduct research, and realize fluid height calculation based on the principle of mass conservation. This method can achieve satisfactory height calculation results for non-transparent waters, but in the case of strong light, such as containing Reflection or strong brightness of the water surface, the accuracy of height calculation results will be affected

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