Development of a Rapid and Precise Method of Digital Image Analysis to Quantify Canopy Density and Structural Complexity
Figure 5
The sampling effort per sample location of canopy estimation using three traditional methods and digital image analysis, divided into time spent undertaking fieldwork after fieldwork analysis. Timings are means based on 10 sample locations sampled by 10 observers each (total per method ). Note that >85% of the after fieldwork processing of digital image analysis was computer processing during which no user interaction was necessary, while for all other methods total time and user interaction time are synonymous. The computer processing time for digital image analysis would increase a little if files need to be converted into greyscale BMP format from other file types, but this would not increase the amount of time for which interaction was necessary (due to automated batch processing).
