Fig. 2From: Free and open-source software for object detection, size, and colour determination for use in plant phenotypingThe error between captured RGB values and the sRGB (ΔRGB) values for the 24 swatches on the SpyderCheckr24 colour checker before and after colour correction. The filled area indicates the standard deviation (n = 50) for different images of lettuces captured in a light box. The mean error before and after colour correction is shown on the right hand sideBack to article page