Table 22 List of blob features
From: Feature analysis for classification of trace fluorescent labeled protein crystallization images
Symbol | Description | Formulation |
|---|---|---|
\(\mu _{o}^{i}\) | Average intensity of O i | \(\frac {1}{w_{i} \times h_{i}} {\sum \nolimits }_{j=m^{i}_{x} - w^{i}/2}^{m^{i}_{x} + w^{i}/2} {\sum \nolimits }_{k=m^{i}_{y} - h^{i}/2}^{m^{i}_{y} + h^{i}/2} I_{gray}(j,k)\) |
\(\sigma _{o}^{i}\) | Std devn of intensity of O i | \(\sqrt {\frac {1}{w_{i} \times h_{i}} {\sum \nolimits }_{j=m^{i}_{x} - w^{i}/2}^{m^{i}_{x} + w^{i}/2} {\sum \nolimits }_{k=m^{i}_{y} - h^{i}/2}^{m^{i}_{y} + h^{i}/2} \left (\mu _{o}^{i} - I_{gray}(j,k)\right)^{2} }\) |
\(N_{o}^{i}\) | No of pixels in O i | h i * w i |
\(Nf_{o}^{i}\) | No of white pixels in O i | \({\sum \nolimits }_{x=1}^{h_{i}}{\sum \nolimits }_{y=1}^{w_{i}}O_{i}(x,y)\) |
\(p_{o}^{i}\) | Perimeter of O i | \({\sum \nolimits }_{i=1}^{h_{i}}{\sum \nolimits }_{j=1}^{w_{i}}\Omega _{i}(x,y)\) |
\(ch_{o}^{i}\) | Convex hull area of O i | [43] |
\(e_{o}^{i}\) | Blob eccentricity of O i | [43] |
\(be_{o}^{i}\) | Blob extent of O i | [43] |
\(bd_{o}^{i}\) | Equivalent circular diameter of O i | [43] |