使用霍夫变换进行矩形检测 [英] Rectangle detection with Hough transform

问题描述

我正在尝试使用

然后您必须执行第 4.3 节中的等式 (3) 给出的峰值配对或

where 表示平行线对应的角度阈值和 是相似长度线对应的归一化阈值.

I'm trying to implement rectangle detection using the Hough transform, based on this paper.

I programmed it using Matlab, but after the detection of parallel pair lines and orthogonal pairs, I must detect the intersection of these pairs. My question is about the quality of the two line intersection in Hough space.

I found the intersection points by solving four equation systems. Do these intersection points lie in cartesian or polar coordinate space?

解决方案

For those of you wondering about the paper, it's:

Rectangle Detection based on a Windowed Hough Transform by Cláudio Rosito Jung and Rodrigo Schramm.

Now according to the paper, the intersection points are expressed as polar coordinates, obviously you implementation may be different (the only way to tell is to show us your code).

Assuming you are being consistent with his notation, your peaks should be expressed as:

You must then perform peak paring given by equation (3) in section 4.3 or

where represents the angular threshold corresponding to parallel lines and is the normalized threshold corresponding to lines of similar length.

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