<dt>
Verbose
</dt><dd><p>
If specified, be verbose.
</p></dd></dl><p>
RELATION TO THE SIFT DETECTOR
</p><p>
In the standard SIFT detector/descriptor, implemented by
<a href="VL_SIFT.html">VL_SIFT</a>(), the size of a spatial bin is related to the keypoint
scale by a multiplier, called magnification factor, and denoted
MAGNIF. Therefore, the keypoint scale corresponding to the
descriptors extracted by <a href="VL_DSIFT.html">VL_DSIFT</a>() is equal to SIZE /
MAGNIF. <a href="VL_DSIFT.html">VL_DSI