Title :
Edge detection on real time using LOG filter
Author :
Liqin, Shen ; Dinggang, Shen ; Feihu, Qi
Author_Institution :
State Key Lab., Shanghai Jiaotong Univ., China
Abstract :
A new technique is proposed for LOG (Laplacian Of Gaussian) filtering based on the method using look-up-tables. The authors take advantage of the circularly symmetric characteristic of the LOG filter, then a look-up-table with acceptable size is established. This transforms a large amount of multiplying operations into easy look-up-table operations. At the same time, another mask which can form an adaptive threshold is added to the LOG mask so that the decision whether a edge exists or not from the result of convolution can be made easily. As a result, LOG filtering becomes a method of edge detection in real time
Keywords :
edge detection; filtering and prediction theory; image segmentation; real-time systems; table lookup; LOG filter; Laplacian Of Gaussian filtering; adaptive threshold; circularly symmetric characteristic; convolution; edge detection; look-up-tables; multiplying operation; real time; Adaptive filters; Communication networks; Convolution; Detectors; Fiber optics; Filtering algorithms; Image edge detection; Image recognition; Image segmentation; Optical fiber filters;
Conference_Titel :
Speech, Image Processing and Neural Networks, 1994. Proceedings, ISSIPNN '94., 1994 International Symposium on
Print_ISBN :
0-7803-1865-X
DOI :
10.1109/SIPNN.1994.344971
