Modified level set method with Canny operator for image noise removal

• 来源期刊: 中国光学快报(英文版)
• 学科: 工学
• 关键词: 噪声去除方法 水平集方法 Canny算子 图像 轨迹方程 运动界面 边缘方向 边缘强度
• 年，卷（期）: 2010,（12）
• 所属期刊栏目: Image Processing
• 页码范围: 1127-1130
• 页数: 4页
• 分类号: TP75 TP391.41
• 语种: 英文

摘要

The level set method is commonly used to address image noise removal. Existing studies concentrate mainly on determining the speed function of the evolution equation. Based on the idea of a Canny operator, this letter introduces a new method of controlling the level set evolution, in which the edge strength is taken into account in choosing curvature flows for the speed function and the normal to edge direction is used to orient the diffusion of the moving interface. The addition of an energy term to penalize the irregularity allows for better preservation of local edge information. In contrast with previous Canny-based level set methods that usually adopt a two-stage framework, the proposed algorithm can execute all the above operations in one process during noise removal.