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IPCV >> Feature Detection, Description and Matching > immatch_BruteForce

immatch_BruteForce

Brute-force matcher for features matching.

Syntax

m = immatch_BruteForce(des1,des2,normType);

Parameters

des1 :

First descriptor

des2 :

Second descriptor

normType :

One of NORM_L1, NORM_L2, NORM_HAMMING, NORM_HAMMING2. L1 and L2 norms are preferable choices for SIFT and SURF descriptors, NORM_HAMMING should be used with ORB, BRISK and BRIEF, NORM_HAMMING2 should be used with ORB when WTA_K==3 or 4 (see ORB::ORB constructor description).

m :

Mathching matrix

Description

This function used to Brute-force matcher to match the given descriptors.

Examples

// Read the image and rotate it by 45 degrees
S = imread(fullpath(getIPCVpath() + "/images/balloons_gray.png"));
S2 = imrotate(S,45);
// Use the ORB to detect features
f1 = imdetect_ORB(S)
f2 = imdetect_ORB(S2)
// Extract the descriptor
d1 = imextract_DescriptorORB(S,f1);
d2 = imextract_DescriptorORB(S2,f2);
// Feature matching
m = immatch_BruteForce(d1,d2,4)
// Find the 10 best matches
[fout1,fout2,mout] = imbestmatches(f1,f2,m,10);
// Draw the matches
SS = imdrawmatches(S,S2,fout1,fout2,mout);
// Show the comparison
imshow(SS);

See also

Authors

Bibliography

1. OpenCV 2.4 Online Documentation


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