Examination of quality factors for agricultural and food products becomes more and more important because of their suitability for further processing and trade turnover. Independently of processing, agricultural and food industry is also expected to provide suitable protection for raw vegetable products generally characterised by inferior durability, and their processing into safe and durable food products, while maintaining proper taste quality. Computerised image analysis, neural modelling, and use of artificial intelligence methods have enormous future also in the fields of food industry and agriculture. Development of fast and efficient method is very much justified, since it will allow making accurate and quick observations without using any additional complex laboratory methods.