Title :
The wavelet transform as a multiresolution matched filter and zero-crossing detector for detecting microcalcifications in mammograms
Author :
Strickland, Robin N. ; Hahn, Hee Il
Author_Institution :
Dept. of Electr. & Comput. Eng., Arizona Univ., Tucson, AZ, USA
Abstract :
We show that a biorthogonal spline wavelet closely approximates the pre-whitening matched filter for detecting microcalcifications in digitized mammograms. The wavelet transform acts like a bank of such detectors operating at multiple scales. Object shape computed from zero-crossings produced by the same wavelet helps to reduce false alarms. Detection performance is tested on 40 mammograms digitized at 100 μm resolution
Keywords :
diagnostic radiography; image resolution; image texture; matched filters; medical image processing; object detection; signal detection; splines (mathematics); wavelet transforms; biorthogonal spline wavelet; breast cancer; digitized mammograms; false alarms; mammograms; microcalcification detection; multiple scales; multiresolution matched filter; object shape; pre-whitening matched filter; resolution; wavelet transform; zero-crossing detector; Background noise; Detectors; Frequency; Markov processes; Matched filters; Object detection; Shape; Testing; Transfer functions; Wavelet transforms;
Conference_Titel :
Engineering in Medicine and Biology Society, 1995., IEEE 17th Annual Conference
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-2475-7
DOI :
10.1109/IEMBS.1995.579463
