Fig. 1From: Skewed distribution of leaf color RGB model and application of skewed parameters in leaf color description modelColor gradation cumulative frequency histograms for single-leaves at four different leaf ages. The leaves are picked at random. Color gradation cumulative frequency histograms of the red, green, and blue color channels as well as gray-level images are showed at 40, 50, 60 and 65 days of leaf age. The X-axis is the cumulative frequency, and the Y-axis is the intensity level frequencyBack to article page