计算机图形学Lecture05-MeshSimplification-new

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2025-01-13 0 0 2.66MB 55 页 5.9玖币
侵权投诉
Geometry processing
etc.
Surface
reconstruction
Fairing (smoothing)
Relocating vertices to achieve
a smoother appearance
Method: centroid averaging
Simplification
Reducing vertex count
Deformation
Relocating vertices guided
by user interaction or to fit
onto a target
问题定义
汇报内容
Pilot Study: 2D Polygon简化
3D Mesh简化算法(QEM
Motivation
结论
基本概念与理论
3D Mesh简化综述
一、Simplification(2D
An optimization problem:
Given an input polygon and a target vertex count N
Find the coordinates of N vertices that minimize the distance
from the new polygon formed by these vertices and the input
polygon
200 vertices 50 vertices
一、Simplification(2D
A greedy heuristic:
Iteratively merges two neighboring vertices into one, until the
target vertex count is reached
Each merging minimizes the error to the original polygon
200 vertices 50 vertices
一、Simplification(2D
If I want to replace two vertices with one, where should it be?
After replacement:
一、Simplification(2D
If I want to replace two vertices with one, where should it be?
Shortest distances to the supporting lines of involved edges
After replacement:
汇报内容
Pilot Study: 2D Polygon简化
3D Mesh简化算法(QEM
Motivation
结论
基本概念与理论
3D Mesh简化综述
The problem of Detail
Graphics systems are awash in model data
Very detailed CAD database
摘要:

Geometryprocessingetc.Surfacereconstruction•Fairing(smoothing)•Relocatingverticestoachieveasmootherappearance•Method:centroidaveraging•Simplification•Reducingvertexcount•Deformation•Relocatingverticesguidedbyuserinteractionortofitontoatarget问题定义汇报内容PilotStudy:2DPolygon简化一二3DMesh简化算法(QEM)五Motivation六...

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分类:计算机 价格:5.9玖币 属性:55 页 大小:2.66MB 格式:PDF 时间:2025-01-13

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