Szukana fraza: [Abstract = "The WTA\-based, fast competitive learning of the first layer was improved to increase clustering reliability. Widrow\?Hoff supervised training used at the output layer utilises manually labelled patterns prepared from training images. The generalisation ability of the network model has been verified by K\-fold cross\-validation. The method significantly accelerates the measurement of leaf regions containing the ROS reaction colour products and improves measurement accuracy."]