An Operator Which Locates Edges in Digitized Pictures," Journal of the ACM, Vol. 18, No. 1, January 1971, pp. 113-125. NIST Technical Note - Page 23 1989 Full view - About this book
...image. The International Journal of Computer Vision, 5(2):195-212, November 1990. [Hue71] MH Hueckel, An operator which locates edges in digitized pictures. Journal of the ACM, 18(1):1 13-125, January 1971. [HW88] BKP Horn and EJ Weldon. Direct methods for recovering motion....
An Operator Which Locates Edges in Digitized Pictures," Journal of the ACM, Vol. 18, No. 1, January 1971, pp. 113-125. 