def matchPairs(self, KNN=True, filter=True):
'''
this function will create a matrix self.kpMatrix like the following:
[a, b, none, c, none]
[d, e, f, g, none]
[h, none, j, k, l]
[none, none, m, o, p]
if these matches exist:
image1:a - image2:d
image2:d - image3:h
image1:b - image2:e
...
where a,b,c... are pixel coordinates
'''
for i in range(len(self.imageList)-1):
if KNN:
if filter:
points1, points2, matches = CVFuncs.findMatchesKnn(self.imageList[i], self.imageList[i+1],filter=True, ratio=True)
else:
points1, points2, matches = CVFuncs.findMatchesKnn(self.imageList[i], self.imageList[i+1],filter=False, ratio=True)
else:
if filter:
points1, points2, matches = CVFuncs.findMatches(self.imageList[i], self.imageList[i+1],filter=True)
else:
points1, points2, matches = CVFuncs.findMatches(self.imageList[i], self.imageList[i+1],filter=False)
# for each match...
for match in matches:
point1 = match.queryIdx #self.imageList[i].kps[match.queryIdx]
# find out if the self.imageList[i] point was matched to already
# if the point has been matched already, add its corresponding point in self.imageList[i+1] to the matrix at the same index
if self.kpMatrix[i].count(point1):
idx = self.kpMatrix[i].index(point1)
self.kpMatrix[i+1][idx] = match.trainIdx#self.imageList[i+1].kps[match.trainIdx]
else:
# otherwise, at a new entry to every image's row in the matrix
for j in range(len(self.imageList)):
#if it's not image i or i+1, then make it empty
if j not in [i,i+1]:
self.kpMatrix[j].append(None)
#otherwise, add the appropriate points
elif j == i:
self.kpMatrix[i].append(match.queryIdx) #self.imageList[i].kps[match.queryIdx])
else: #j == i+1
self.kpMatrix[i+1].append(match.trainIdx) #self.imageList[i+1].kps[match.trainIdx])
