Fig. 1
From: Apple leaf disease severity grading based on deep learning and the DRL-Watershed algorithm

Examples of the four disease types. (a) Alternaria Blotch; (b) Brown Spot; (c) Gray Spot; (d) Rust
From: Apple leaf disease severity grading based on deep learning and the DRL-Watershed algorithm

Examples of the four disease types. (a) Alternaria Blotch; (b) Brown Spot; (c) Gray Spot; (d) Rust