Identifying an area of interest using histogram data arranged in

Details Identifying an area of interest using histogram data arranged in Identifying an area of interest using histogram data arranged in

1994-10-26

1996-12-24

Johns, Andrew

Image analysis

Histogram processing

G06K 936

Patent

active

055880711

ABSTRACT:
A method for automatic analysis and enhancement of digitized images to identify the area of interest (AOI) from background areas divides a digitized image into a number of regions, and calculates histograms of gray scale or density for each region. An image of the regions in histogram space is created according to a selected sequence of the regions, chosen to preserve spatial proximity. This image is then processed by peak detection to identify features grouped spatially and by similarity of histograms. From this the AOI is identified, and the contrast enhancement is applied to the original image, according to the characteristics of the output device. The method is particularly adapted for enhancing medical X-ray images, for output to viewing devices.

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