Pollen Monitor BAA500
Fig. 1: Pollen monitoring system.
Figure 2 shows a synthetic image calculated from the image stack obtained from a z-scan of the microscope. This image contains all planes of maximum sharpness of the single images of the stack. The subsequent classification step uses different descriptors for the characteristics of the objects (Fig. 3).
The test results of this classification process are given in Tab. 1. To guarantee these results, however, quality assurance of the overall process from air intake to classification is mandatory.
Fig. 2: Synthetic, two-dimensional image with segmented pollen.
Fig. 3: Same as Fig. 2, with classified pollen (green) and dust particles (red).
Allergologically not relevant
Tab. 1: Test results of classification process. Recall: number of correctly classified pollen relative to number of pollen classified by a human counter. Precision: number of correctly classified pollen relative to number of pollen classified by computer.