浙江大学硕士学位论文ABSTRACT
浙江大学硕士学位论文
ABSTRACT
Virtual reality has become one of the hot research areas of the computer science． The development of netwo呔graphics alSO helped to make the application of virtual reality more widespread．On the other hand，recent years，Computer Aided Design in textile manufacture also has its conlnqon use in the pattern design and the craffwork processing．For these reasons，some kinds of well designed pattern ereation s37stems emerged．However,research on mgh realistic pattern effect remains out of date。 According to this situation,through the research on scene design which iS based on image and the research on realistic graphics，we discussed a method which combines the research on Image Based Rendering and the research on pattem effect simulation．
For the pattern warp demands in specific scenes．an algorithm which divided the
scene surface intO warp control meshes according to the scene surface features Was presented，Considering the detail changes in the scene surface，a mesh adjusting method Was also given out。
To adapt the SCCD．C surface features，a texture mapping algorithm was putted forward．This algorithm used mesh edgas as texture warp control vectors．and the composite vector based on the control vectors could determine the mapping point． This process could meet t量1e demand of reasonable texture warp on the scene surface．
Furth托when this algorithm was putted in 3D scenes，it alSO COUld server as a realistic
texture mapping method．
For the realistie texture e＆ct when putting the pattem{n real scenes．the珏SV
color model which coincides witll the human vision was used．Wim this color model．
realistie texture effect was obtained by the brightness synthesis of corresponding
mappmg points between the scene maagc and texture tmage·
To exactly estimate the mapping area，a method by fitting its boundary using cnbic parametric spline cBrves was presented，and at氇e same time，a boundary polygonization algorithm based on curvature radius Was given for the purpo
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