Recent technologies of leaf disease detection using image processing approach — A review

The economic growth of the country largely hinge on the crop production quality and quantity. The production rate can be improved by disease detection in well-time. Many image processing based approaches have been developed for leaf disease detection in last few years. This paper presents, a survey on different technologies of leaf disease detection using image processing approach and classified them based on the type of analysis tool and applications. Almost, prevailing technologies used in leaf disease detection system are critically reviewed and discussed in brief; comparison of available approaches are examined and presented. The key issues and challenges in leaf diseases detection are highlighted. A vast collection of papers, books and standards are listed in the reference list, which is useful to the researchers, farmers and policy-makers in the area of agriculture.