Singh, K.J.Kapoor, D.S.Sharma, A.Kohli, A.K.2016-07-252016-07-252016-06Journal of the National Science Foundation of Sri Lanka, 44(2):p.145-154https://dl.nsf.gov.lk/handle/1/233632-D Fourier transformEdge detectionImage segmentationLogical operationsRed blood cellsMulti-level threshold based edge detector using logical operationsArticle