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I have and image and applied SIFT to find descriptors, now I am looking to find which descriptors are similar to each other, please help me with your suggestions. |
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I have and image and applied SIFT to find descriptors, now I am looking to find which descriptors are similar to each other, please help me with your suggestions. |
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Asked: Nov 01 '12 at 11:53
Seen: 682 times
Last updated: Nov 08 '12 at 03:28
look at k nearest neighbour
Use cosine similarity to find similarity between descriptor vectors. Normalize the vectors to unit length and find the cosine product, the higher the value the more similar they are....
@Lancelot: thanks for your answer, do you have any suggestion how I can reduce number of descriptors as they are too much and time consuming.
@ marshallp: thanks for your answer, i have used Euclidean distance for descriptors and sort them, now how I can use these distances to find exact matches?