Wednesday, 23 April 2014

Work of Camera Calibration (11)

I. Check every parameters in order to increase the number of MSER features
        - 'ThresholdDelta': decrease to 0.2
        - 'MaxAreaVariation': increase to 0.85
        - 'RegionAreaRange': change to [5  sizeOfImage*30%]

II. Check every parameters in order to increase the number of SURF features (in 128-bit)
        - 'MetricThreshold': decrease to 100
        - 'NumScaleLevels': increase to 6
        - 'NumOctaves': increase to 4

III. Check the 2 function calls to know what value is going to be feedback
        - 'extractFeatures': scale, signOfLaplacian, orientation, location, metric, count
        - 'detectMSERFeatures': count, location, axes, orientation, pixelList

IV. Check every parameters in 'Matching Function Call' in order to increase the number of matches
        - 'Method': change to 'NearestNeighborSymmetric'
        - 'MatchThreshold': increase to 10~20
        - 'Metric': change to 'SAD'
        - 'MaxRatio': 'Default'



Finally, we have 400~600 'MSER+SURF(in 128-bit)' features and 300~450 matches.

     

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