One-step models for soft computing techniques. Industrial application to image processing in quality assurance process

Abstract

The authors present an approach based on a one-step method using soft computing techniques for a quality assurance process in the form of dimensional checking parameters via industrial image processing. This method offers a high grade of precision in processes to solve the evaluation problems on-line applications. As well known to the researchers, the approaches in a single iteration of these techniques for artificial neural networks (ANN) such as adaptive neuro fuzzy inference systems (ANFIS) and radial basis function network (RBFN) are not documented in the literature. This work provides the simplification to one-step that provides the chance of creation and implementation of these models for online applications without loss of time in the iterations needed to adjust the model (training) to generate a fast response. The main objective of this paper is to provide a model capable of approximating the solution of a function that represents the system, that function is based on historical data of the process but the operators that compound the function are unknown. The relations between the inputs and outputs are known, but the interactions between variables are unknown. Based on the literature, the soft computing techniques are trained by trial and error because they do not have a stop criterion; also, the functions that provide an approximation are unknown in most cases. To solve the problem mentioned above, this paper proposes the one-step method without training. It is necessary to approximate the solution avoiding the overshoot and damping produced by classic approaches. The deviation generated is in the order of one standard deviation whose magnitude is in the order of common approaches for image processing as it is documented in literature for the best case RBFN.