You can sort the full according to the different columns by clicking on them. Even note that you can easily change the few value according to the current scope type. As click on the scope label directly in the regarding row and choose the new scope from the pulldown list: Short be aware of the fact that there are combinations of checkboxes which are NOT possible or not assigned to set in one single ACL line..
At each next octave, the resolution of the images is halved to save computations. The images composing the Gaussian and DoG scale space can then be arranged as in the following figure:. Notice that the scale level index s varies in a slightly redundant set. Once extracted, local extrema are quadratically interpolated this is very important especially at the lower resolution scales in order to have Payypal keypoint localization at the full resolution.