def get_file_descs(fn):
#print 'computing descriptors for %s' % fn
f = path.join('descs', path.basename(fn) + '.npy')
if path.exists(f):
descs = np.load(f)
else:
frames = util.vidread(fn)
pts = video.get_interest_points(frames)
descs = video.compute_descriptors(frames, pts)
np.save(f, descs)
return descs