Method and system for automated selection of regions of interest

Details Method and system for automated selection of regions of interest Method and system for automated selection of regions of interest

1992-02-28

1994-08-30

Envall, Jr., Roy N.

Boots, shoes, and leggings

36441313, 36441322, 378901, 378 982, 382 6, 382 22, G06F 1500, G06F 1542, H04N 530, H04N 140

Patent

active

053433904

ABSTRACT:
An automated method and system for discriminating between normal lungs and abnormal lungs having interstitial disease and/or septal lines, wherein a large number of adjacent regions of interest (ROIs) are selected, corresponding to an area on a digital image of a patient's lungs. The ROIs each contain a number of square or rectangular pixel arrays and are selected to sequentially fill in the total selected area of the lungs to be analyzed. A background trend is removed from each individual ROI and the ROIs are then analyzed to determine those exhibiting sharp edges, i.e., high edge gradients. A percentage of these sharp-edged ROIs are removed from the original sample based on the edge gradient analysis, a majority of which correspond to rib-edge containing ROIs. After removal of the sharp-edged ROIs, texture measurements are taken on the remaining sample in order to compare such data with predetermined data for normal and abnormal lungs. Thus, a computerized scheme for quantitative analysis of interstitial lung diseases and/or septal lines appearing in digitized chest radiographs can be implemented in practical clinical situations.

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