一种三维场景的消失点检测算法

消失点可以提供大量的场景三维结构和方向信息,是重要的特征点。本文提出了一种不需附加场景先验信息和空间变换,直接利用直线信息在图像平面上估计消失点的算法,算法利用Helmholtz原理估计消失点在二维平面上的方向,在各检测到的方向中通过最小二乘求解消失点的准确位置。本算法不需要其它先验信息,提高了消失点检测效率和准确性,尤其适用于人工目标的三维特征提取。

A Vanishing Point Detection Algorithm for 3D Scene

Vanishing point is an important character point,which contains a lot of scene's 3D structure and direction informa- tion.An algorithm to estimate vanishing point is presented which use segments in 2D image plane and doesn't need any additional prop- erties and space transform.Helmholtz principle is used to estimate the directions of vanishing points in 2D image plane,and determine the accurate place by least square error.This method doesn't need priori information with the property of universality,which especiaLly suitable for the feature extraction of 3D man-made object.