Image analysis – Applications – Biomedical applications
Patent
1996-09-30
1999-11-09
Johns, Andrew W.
Image analysis
Applications
Biomedical applications
382172, G06K 900
Patent
active
059829168
ABSTRACT:
A method for automatically locating a desired region of interest (ROI) in an original digital image involving the use of histograms to determine a threshold that is used to generate a mask to detect the ROIs. Digital image intensity data is obtained and a histogram of the intensity data is formed. The threshold is determined by first determining a histogram point that represents the noise peak in the image intensity data and then setting the threshold to be the image intensity value following the noise peak that first exhibits a positive curvature. The threshold is used to create a mask from the original digital image, and contiguous areas of pixels are defined in the mask. At least one of these contiguous areas is determined to be a desired ROI.
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Edelman Lawrence C.
Johns Andrew W.
Siemens Corporate Research Inc.
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