distance - Similarity matching between images using multiple features in Matlab -

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in image retrieval matlab project, have extracted 14 features each image, , shown in following table.

**si.no feature name size example values **

  1      feature_1      1x64    {96.02, 100.29, 69.04, 91.23,……89.42}   2      feature_2      1x64    {0.070, 0.0671, 0.0876, …….. 0.065}   3      feature_3      1x64    {0.837,  0.949,  0.992, 1.015 .…. 1.306}   4      feature_4      1x64    { 5.00,  5.831,  8.6023, 6.403,…..8.602}   5      feature_5      1x64    {-18.875,  -10.85,  -5.12,  … 39.2005}   6      feature_6      1x1      0.6465494   7      feature_7      1x1      0.89150039   8      feature_8      1x1      0.888859   9      feature_9      1x1      0.990652599  10      feature_10     1x1      157.8198719  11      feature_11     1x1      0.60112219  12      feature_12     1x1      0.060502114  13      feature_13     1x1      0.139164909  14      feature_14     1x1      5.7084825

the above set of feature single image. compute similarity between 2 images, tried following ways.

first, applied distance computation on whole feature set constructing feature matrix (size: 14 x n ) image.

second, there 14 distance values computed individual features of 2 images individual distance values added obtain final distance value. here problem features dominate , make other features of no effect. (eg. feature_1 , feature_10 gives large distance values, addition of other 12 feature’s distance them not give effect. normalized 14 individual distance values range 0 1, problem again small distance values gets small after normalization.

but in both methods retrieval results not satisfactory. there other methods compute similarity between images accounts above features equal importance?

regards,

p.arjun


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