In [1], they discussed about automatic detection and
classification of diseases. Plant disease spots are different in
color but not in intensity. Thus color transform of RGB
image is used for better segmentation of disease spots.
Median filter is used for image smoothing and Otsu method
is used to calculate threshold values to detect the disease
spot. It doesn’t give accurate result for Dicot family plant.
P. Revathi and M. Hemalatha [4] investigated advance
computing technology to assists the farmer in plant
development process. This approach used mobile to capture
infected cotton leaf images. RGB color feature segmentation
is carried out to get disease spots. Edge detection technique
is used for extraction of image features of spots to detect
diseases. Neural network is used to categorize the diseases.
The segmentation process is not suitable for Monocot family
plant.