文章目录
  1. 1. 边界的来源
  2. 2. Canny Edge Operator

边界的来源

边缘是由多种因素引起的,包含有:

  1. 物体表面正常的不连续
  2. 深度不连续
  3. 表面颜色不连续
  4. 光照不连续

Canny Edge Operator

  1. Smooth image f with 2D Gaussian: g*f

    高斯滤波对图像去噪

  2. Computing gradient。

    由原始灰度图求出纵横2个梯度图,以及综合梯度图

  3. Locate edges by finding zero-crossings along the edge normal directions(non-maximum suppression)
  4. Double thresholding: strong edges and weak edges
  5. Edge tracking by hysteresis
文章目录
  1. 1. 边界的来源
  2. 2. Canny Edge Operator