Figure 6

RGB images and binary infestation maps for automatic localization of barley tissue diseased by Blumeria graminis f.sp. hordei 3 to 13 dai. Black color indicates Bgh free tissue, white color highlights Bgh diseased barley tissue. Image section varies from day to day. No powdery mildew symptoms were visible 3 dai on RGB images. The binary map was almost completely black with small exceptions. First tiny powdery mildew pustules occurred in the RGB image 4 dai, which were detected and illustrated as white areas on the binary map.