Fig. 5From: CoverageTool: A semi-automated graphic software: applications for plant phenotypinga Wheat roots spread and scanned on an A4 sheet of paper with a black background. b Selection made to include and ignore, made by sampling in CoverageTool. c CoverageTool Root projected surface area calculation: an example for pre-processing done using the ‘Blank’ feature to erase background noiseBack to article page