鱼眼图像轮廓提取算法研究

要从鱼眼图像恢复出实际场景的图像，其前提是必须准确地提取出鱼眼图像的轮廓，也就是说要精确地求出鱼眼图像圆形区域的半径和圆心坐标。提取鱼眼图像轮廓一般是采用最小二乘拟和的方法，但该方法计算量大，精度难以保证。文中根据鱼眼图像的特点提出了面积统计的方法。面积统计法不仅可以降低计算复杂度，在精度上也可以达到要求，实验证明了所给出的方法的正确性和可行性。

Research of Contour Retrieval in Fish Eye Image

To recover the original scene from fish eye image,the necessary condition is to retrieve the contour of fish eye image accurately.In other words,get the radius and the coordinate of center of circular region of fish eye image precisely.The general method of contour retrieval is the least square method,but the computational effort of which is too much and the precision of which is difficult to ensure.This paper demonstrates the method of calculating the area of the circular region according to the speciality of fish eye image.This method can not only degrade the complexity of computation,but also reach the requirement of precision.Experimental results are included to show the feasibility of the method.