android - Get the feature points of a character image for point matching -


i browsed around internet , not find point matching implementation on java. therefore create own simple 1 apply on simple line matching following tutorial

my first step obtain "points" below express feature of image. approach apply thinning (skeleton) algorithm before getting points? have no idea on obtaining meaningful points in next step, give me guidance?

please point out if doing silly unreasonable.

enter image description here

your first step should define transformation matching points should survive through - translation or rotation, scaling, shear, etc? second step outline useful properties matching - points should stable noise , transformation, localized , supplied unique descriptor match them "signautre". opencv has java library, can start slowest worked out points , descriptors sift, surf , work way fast , own descriptor, can faster more work.

alternatively, can find defined points in font , use geometric hashing if sure there correspondences. in case dont need descriptors or explicit matching. see wikipedia article on geometric hashing. think in simple form provides methodology rotation , scaling transformations.


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