General image identification is essential in many applications. Defects identification in industries is mostly manual and time consuming. To reduce error in detecting defects, image identification can be used in industries. Moreover, India being an agro-based economy, farmers experience a lot of problem in detecting and preventing the diseases due to insects in agricultural fields. So there is a necessary in detecting insects in agricultural fields which proves to be effective and convenient for researchers. The images of the, insects or leaves are used to identify the insects or diseases affecting the leaves. The general image recognition method used in this study is based on Otsu’s threshold value.