Fig. 4.

Evaluation of the bright spot feature exemplarily shown on images acquired after 0, 240 and 560 min of a lab-scale yeast fermentation process. The figure at time point 0 (inoculation) is to be interpreted as follows: 8% of all objects segmented on the image were automatically classified to have zero bright spots, out of which 0% were manually selected and excluded due to false segmentation. 28% of all objects segmented on the image were automatically classified to have one bright spot, out of which 2% were manually selected and excluded due to false segmentation. The other bars in the bar charts have to be read accordingly