Table 18 List of intensity features
From: Feature analysis for classification of trace fluorescent labeled protein crystallization images
Symbol | Description | Formulation |
|---|---|---|
i μ | Average image intensity | \(\frac {1}{w*h} {\sum \nolimits }_{i=1}^{h} {\sum \nolimits }_{j=1}^{w} I_{gray}(i,j)\) |
i min | Minimum image intensity | m i n 1≤i≤h,1≤j≤w I gray (i,j) |
i max | Maximum image intensity | m a x 1≤i≤h,1≤j≤w I gray (i,j) |
σ | Standard deviation of intensity | \(\sigma = \sqrt {\frac {1}{h*w} {\sum \nolimits }_{i=1}^{h} {\sum \nolimits }_{j=1}^{w} (i_{\mu } - I_{gray}(i,j))^{2}}\) |
τ o | Otsu’s threshold intensity | [29] |
e o | Threshold effectiveness metric | [43] |