Insects cause devastating damages to humans and environment. They are vectors for infectious diseases, they feed on almost all agricultural crops, and they attack various sorts of food in storage facilities. Insect monitoring and early detection plays a very important role for efficient insect-pest-management program. Classical methods such as sticky traps and pesticide negatively affect the environment and beneficial insects and lead to ecological damage. We have designed a computerized system to monitor insects and record their activity in different environments and through a defined time frame. We implemented the connected component algorithm to record insects' count then generate line graphs and scatter plots. The output of graphical representation shows insects activity within a defined time interval. Keywords- Insect monitoring; connected components algorithm