Figure 4From: Rhizoslides: paper-based growth system for non-destructive, high throughput phenotyping of root development by means of image analysisApplication of optimal image processing. The optimized image processing protocol as described in Figure 6, was applied to the four most promising papers identified based on spectral imaging (Figure 3). A: Images of roots grown on Anchor, Whatman blue and white or Sebio paper. Two images were taken with flash light from the right/left side and combined to one image. B: Conversion into greyscale using the red channel for conversion. C: Segmentation of the root system using the adaptive threshold of GiARoots.Back to article page