Abstract
Producing tomato is a daunting task as the crop of tomato is exposed to attacks from various microorganisms. The symptoms of the attacks are usually changed in color, bacterial spots, special kind of specks, and sunken areas with concentric rings having different colors on the tomato outer surface. This paper addresses a vision sensing based system for tomato quality inspection. A novel approach has been developed for tomato fruit detection and disease detection. Developed system consists of USB based camera module having 12.0 megapixel interfaced with ARM-9 processor. Zigbee module has been interfaced with developed system for wireless transmission from host system to PC based server for further processing. Algorithm development consists of three major steps, preprocessing steps like noise rejection, segmentation and scaling, classification and recognition, and automatic disease detection and classification. Tomato samples have been collected from local market and data acquisition has been performed for data base preparation and various processing steps. Developed system can detect as well as classify the various diseases in tomato samples. Various pattern recognition and soft computing techniques have been implemented for data analysis as well as different parameters prediction like shelf life of the tomato, quality index based on disease detection and classification, freshness detection, maturity index detection, and different suggestions for detected diseases. Results are validated with aroma sensing technique using commercial Alpha Mos 3000 system. Accuracy has been calculated from extracted results, which is around 92%.
Highlights
The increased awareness and sophistication of consumers have created the expectation for improved quality in consumer food products
Firmware development consist of two sections: first one is hardware development composed of developed ARM based system with required experimental set up and second one is algorithm development using various algorithms required for sample classification, early warning about disease attack detection and classification
Extracted results have been validated with standard Alpha Mos and ultrasonic based stiffness detection system using aroma and ultrasonic sensing techniques, respectively
Summary
The increased awareness and sophistication of consumers have created the expectation for improved quality in consumer food products. This has increased the need of advance quality monitoring systems for quality detection and early warning for different type food samples. Nonliving agents includes various environment effects such as rapid temperature change, excess moisture, insufficient nutrients, poor soil pH and high humidity conditions [5]. In this kind of scenario vision sensing technique is one of the best as well as appropriate choice to avoid such kind of conditions [6].
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