A novel image interpolator based on probabilistic neural network with shapeness/smoothness adaptation

In this paper, we propose a novel image interpolator based on Probabilistic Neural Network(PNN) that adjusts automatically the smoothing parameters of interpolative model for varied smooth/edge image region. This method takes into consideration both smoothness(flat region) and sharpness(edge region) characteristics at the same model. A single neuron, combined with PSO training, is used for sharpeness/smoothness adaptation. The experimental results demonstrate that this interpolator possesses better performance than bicubic polynomial interpolation either at flat region or at edge region of images.