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Plant Leaves Wilting Deformation Technology Research

Posted on:2014-11-29Degree:MasterType:Thesis
Country:ChinaCandidate:Y Y CaoFull Text:PDF
GTID:2268330392964331Subject:Computer software and theory
Abstract/Summary:PDF Full Text Request
The simulation of plant leaves is an important exploration field of computer graphicsin virtual reality. Because a wide variety of the leaves and their deformation is complex,the three-dimensional visualization of the leaves is a difficulty. In recent years, peoplehave done many things in the leaves’3D modeling and dynamic simulation. This articlefocuses on the following aspects in depth, considering what the results are all not goodideals to figure out this issue.Firstly, the modeling of leaves is a large amount of time consuming work and so thispaper presents an images-based vividly three-dimensional leaves modeling method. Whichusing OpenCV obtain the key points of the leaves, and then leaves’ triangulation andadaptive subdivision based on the key points of leaf surface, so it is through thetriangulation and subdivision to establish the final shape of the3D leaves.Secondly, for the leaves’ complex wilting deformation affecting leaf simulationproblem, this paper based on the mass-spring system technology, define an improvedsingle layered mass-spring system to simulate the leaf.Once more, according to the special moving deformation of leaves’ outline and veins,this paper through its physiological and physical characteristics to complete the motionequations of them. In addition, for the structure of veins, using marked springs to simulatethe veins deformation, and setting parameters to control the springs of leaf surfacedeformation. So that more realistic simulation of the leaf.Finally, by implementing VC++, and OpenGL, a real-time leaf simulation system isdesigned and realized to validate the effectiveness of the methods proposed. Experimentalresults show that it can simulate most of plant leaves wilting; at the same time morerealistic leaf movement and deformation effects are obtained to meet the requirement forthe realism and the real time of the leaf modeling.
Keywords/Search Tags:Leaf shape modeling, Delaunay triangulation, Adaptive subdivision, Physically-based simulation, Mass-spring model, Leaves deformation
PDF Full Text Request
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