Szukana fraza: [Abstract = The second stage of the method consists in the classification of within mask pixels in a hue\-saturation plane using two classes, determined by leaf regions with and without colour products of the ROS reaction. At this stage a two\-layer, hybrid artificial neural network is applied with the first layer as a self\-organising Kohonen type network and a linear perceptron output layer \(counter propagation network type\).]