Abstract: Tomatoes are the best-known grown fruit in greenhouses. Tomato is a plant which its fruit does not ripe simultaneously, therefore it is necessary to develop an algorithm to distinguish between green, pink, light red and red tomatoes. This experimental work aimed to develop an efficient approach for identifying the ripening stages of tomato. Using the acquired image, the RGB values of the tomato were processed by the MATLAB and used to identify the stage of the tomato. The MATLAB processing will be done by the AVR Microcontroller. The stage of captured image is communicated with the processor and finally the farmer is informed via massage through GSM technology as well as the captured image will be sent to the specific mail-id.

Keywords: MATLAB, USB camera, AVR Microcontroller, GSM module.