Showing papers on "Canny edge detector published in 1979"
01 May 1979
TL;DR: Theoretical and experimental comparisons of edge detectors are presented and quantitative design and performance evaluation techniques developed are used to optimally design a variety of small and large mask edge detectors.
Abstract: Quantitative design and performance evaluation techniques are developed for the enhancement/thresholding class of image edge detectors. The design techniques are based on statistical detection theory and deterministic pattern-recognition classification procedures. The performance evaluation methods developed include: a)deterministic measurement of the edge gradient amplitude; b)comparison of the probabilities of correct and false edge detection; and c) figure of merit computation. The design techniques developed are used to optimally design a variety of small and large mask edge detectors. Theoretical and experimental comparisons of edge detectors are presented.
799 citations
09 Jan 1979
TL;DR: The Sobel and Maximum Gradient edge detection operators are examined with respect to their response to Gaussian noise, and closed form solutions to their resulting probability density functions are presented.
Abstract: The Sobel and Maximum Gradient edge detection operators are examined with respect to their response to Gaussian noise, and closed form solutions to their resulting probability density functions are presented. The results of million event Monte Carlo simulations are presented for various contrast to noise ratios (CNR) for an ideal edge and an expression is derived for edge detection performance as a function of CNR. It is shown that acceptable edge detection performance is achieved for CNR values greater than 4. For comparison purposes, the edge direction images for an aerial photograph are shown at four different signal to noise ratios.© (1979) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
2 citations