method of making directional image
plz if any1 hv idea about direction images .... any research paper link
then plz reply here
then plz reply here
Replies
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jiya alii wanna make direction image of figerprint to extract features.. plz kindly help me.. -
Predictor
I think that you are interested in edge detection filters which are direction-specific. Sobel filters are among the simpler such filters, and measure the edge in the vertical and horizontal directions separately, and these can be combined to obtain direction (not limited to NSEW) and magnitude measures, as described here:jiya alii wanna make direction image of figerprint to extract features..
Feature Detectors - Sobel Edge Detector
There are other filters similar to this, which make separate magnitude measurements for 0, 45, 90 and 135 degrees, only. For example:
Feature Detectors - Compass Edge Detector
-Will Dwinnell
Data Mining in MATLAB -
gohmAlso be sure to refrain from using sms text in posting
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