Figure 5.

Correlation of hue – saturation – intensity grey value distribution of an image obtained from H & E stained slide. Note the quite broad channel of hue – intensity correlation, and two separate clusters (indicators of "poor" image quality).

Kayser et al. Diagnostic Pathology 2008 3(Suppl 1):S11   doi:10.1186/1746-1596-3-S1-S11