storing keypoints

[Stéfan van der Walt]

Hi Jerome

On Thu, Jun 27, 2013 at 12:32 AM, Jérôme Kieffer
<google at terre-adelie.org> wrote:
> I am wondering what is the best way to store (in python) SIFT keypoints
> to exchange them (serialize, save, load-back, ...) SIFT is a keypoint
> extraction algorithm for images so it transforms a 2D image into
> n-keypoints; each keypoint being composed of 4floats
> (x, y, scale, orientation) and 128 uint8.

Probably an array with elements of

dtype = np.dtype([('x', float), ('y', float), ('scale', float),
('orientation', float), ('feature', (np.uint8, 128))])

Regards
Stéfan