关键词: 边折叠, 细节层次, 狭长三角形, 色差三角形, 纹理

Abstract: At present，many model simplified algorithms can not guarantee the visual characteristics of the simplified model，resulting in serious visual distortion.To solve the issues，this paper presents a model simplified algorithm，which solves the reflection of the vertex Convexo-Concave attribute by introducing the vertex curvature attribute factor，and maintains the geometry features of the model commendably by restricting the creation of long-narrow triangular，and keeps the texture features of model by signing the triangular whose color has changed distinctly，and resolves the visual affection of the error accumulation by computing the data which are in both the queue storing the edge collapse costs and the queue noting the changes of edges，so that the visual characteristics of the simplified model are maintained.The experiment shows that the algorithm is efficient，reliable，can maintain the visual characteristics of the model better.

Key words: edge collapse, level-of-detail, long-narrow triangular, color-difference triangle, texture