Leaf area is an important index in prediction of the product of crop.
Square grid counting and gravimetric and pixel counting using image processing are mostly used for leaf area measurements.
Different geometric shaped areas were used to simulate the leaves having various shapes.
The calculated leaf areas were shown on an OLED graphics display.
Accuracy of this method is found to be about ± 99% for regular shaped leaves where accuracy is ± 95% for irregularly shaped leaves.
The leaf area measurements are confirmed by comparing the results with measurements of grid counting method.