Method for monitoring wounds
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United States of America Patent
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-
Jul 24, 2007
Grant Date -
Jul 15, 2004
app pub date -
Nov 12, 2003
filing date -
Nov 19, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of quantifying the extent of erythema around a wound of a patient is disclosed. An image (200) is captured that includes the wound, the erythema and surrounding skin. A border of the wound is identified (step 232) and a distance transform is performed (step 234) on an area of the image between the wound border and a boundary of the image to determine bands of pixels (226, 228, 230), wherein the pixels within each band are equidistant from the wound border. A representative value such as average brightness is calculated for each band (step 238), and a threshold level is defined relative to the representative value of the surrounding skin (step 240). The extent of the erythema is then calculated.
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