feature-based retinal image registration: points_featureangle(bw, radius); - File Exchange

Code covered by the BSD License

Highlights from
feature-based retinal image registration

featurematch(featuremat1, fea... This function matches the best point in the feature matrix
findangle(boundvec, startidx) This function computes the bifurcation angle
point_angle(bw, seed, R, star... This function computes the angle of seed from the start point
point_anglevec(bw, seed, R) This function generate the anglevector that surrounds the seed
point_neighbors(bw, pt, R, se... This function search the linked neighbor of the seed
points_feature(bw, radius); This function call subfunctions to generate the feature data
points_featureangle(bw, radiu... This function call subfunctions to generate the feature data
points_init(bw) This function initializes the feature points from the binary image
points_link(bw, ptcore, ptmar... This function links the current point and its neighbour points
points_select(bw, pt, R, Angl... This function selects the optimal bifurcation points in the binary image
points_show(bw, pt, R, TagBw) This function displays the detected points using a rectangular grid
points_showsome(bw, nodes, R) This function displays some points togther with its neigbours
points_transform(node, dim, s... This function extract the bifurcation coordinate from the node
verifymatch(linktable1, linkt... This funciton verify the correspondence and find the best matched pair
startup.m
testreg.m
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from feature-based retinal image registration by Li CHEN
feature point, retinal image , image registration, blood vessel

points_featureangle(bw, radius);

function [ptbifubest, anglemat, bw] = points_featureangle(bw, radius);

% This function call subfunctions to generate the feature data

se = strel('square', 5);
bw = bwmorph(imdilate(bw, se), 'thin', Inf);

[ptbifu, ptroot] = points_init(bw);
[ptbifubest, anglemat] = points_select(bw, ptbifu, radius, 3);

Highlights from feature-based retinal image registration

Highlights from
feature-based retinal image registration