Fast Contour Line Extraction Algorithm Observing Line Continuation

Takashi Nishimura; Tsuyoshi Fujimoto

doi:10.1117/12.970081

1 November 1989 Fast Contour Line Extraction Algorithm Observing Line Continuation

Takashi Nishimura, Tsuyoshi Fujimoto

Proceedings Volume 1199, Visual Communications and Image Processing IV; (1989) https://doi.org/10.1117/12.970081
Event: 1989 Symposium on Visual Communications, Image Processing, and Intelligent Robotics Systems, 1989, Philadelphia, PA, United States

Abstract

This paper describes a new contour line extraction algorithm that yields one-pixel-wide contour lines with excellent continuity and low noise from gray-scale images. Conventional methods are extremely slow because the line thinning process, needed after line extraction, is iterative. The new algorithm effectively integrates local maximal point extraction and thresholding by checking line continuity. Since the two processes, point extraction and thresholding, are carried out simultaneously, the processing speed of this algorithm is about 14 times faster than a conventional method which combines Prewitt's differential type operation with Deutsch's thinning algorithm.

Citation Download Citation

Takashi Nishimura and Tsuyoshi Fujimoto "Fast Contour Line Extraction Algorithm Observing Line Continuation", Proc. SPIE 1199, Visual Communications and Image Processing IV, (1 November 1989); https://doi.org/10.1117/12.970081

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