Neural image analysis of maturity stage during composting of sewage sludge

The paper presents the experiments of compost images analysis carried out with two types of digital cameras working in daylight and ultraviolet light. The data collected with two cameras were analysed with the usage of neural network model (using part of application Statistica v. 8.0). The results of image analysis were combined also with the results of chemical and physical analysis of composted material in different stage of the composting process.