学校代码: 10128
学 号: 2
本科毕业论文外文文献翻译
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外文题目:Line detection technique based on
Hough transform
中文题目:基于霍夫变换的直线检测技术
学生姓名:张明明
学 院:机械学院
系 别:测控系
专 业:测控技术与仪器
班 级:测控09-2班
指导教师:白福忠 副教授/博士
二 〇 一 三 年 六 月
Linear Feature Extraction using combined
approach of Hough transform, Eigen values and
Raster scan Algorithms
In this paper we propose a new methodfor linear geometric primitive identification which uses the generalized standard Hough transform (HT), Eigen value based statistical parameter analysis and Bresenham's raster scan algorithms. In this method, we use the sparse matrix to find the Hough transform of the given image. Since sparse matrices squeeze zero elements and contain a small number of nonzero elements they provide an advantage in matrix storage space and computational time. Hough peaks are identified based on neighborhood suppression scheme. After finding the meaningful and distinct Hough peaks, coordinates of linear features in Hough space can be obtained using Bresenham 's raster scan algorithm. Since quantization in parameter space of the HT gives both the real andfalse primitives because of quantization in the space of digital image, quantization in parameter space of HT as well as the fact that the edges in typical images are not perfectly constitutes the geometrical features, a statistical analysis is done using the eigen values to characterize and identifying the geometrical primitives. The proposed method has the advantages of small storage, high speed, and accurate digitization ofHough space and less line extraction error ratio over previously presented HT based techniques and its invariants.
1. INTRODUCTION
Extracting geometric primitives in digital images is one of the basic tasks of computer vision and image segmentation. The HT and its variants [1] constitute a popular method for
extracting geometrical primitives like straight line
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