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Parametric texture models have been applied successfully to synthesize artificial images. Psychophysical studies show that under defined conditions observers are unable to differentiate between model-generated and original natural textures. In industrial applications the reverse case is of interest: a texture analysis system should decide if human observers are able to discriminate between a reference and a novel texture. Here, we implemented a human-vision-inspired novelty detection approach. Assuming that the features used for texture synthesis are important for human texture perception, we compare psychophysical as well as learnt texture representations based on activations of a pretrained CNN in a novelty detection scenario. Based on a digital print inspection scenario we show that psychophysical texture representations are able to outperform CNN-encoded features.
Michael Grunwald,Matthias Hermann,Fabian Freiberg, andMatthias O. Franz
"Biologically-vision-inspired vs. CNN texture representations in novelty detection", Proc. SPIE 11843, Applications of Machine Learning 2021, 118430I (1 August 2021); https://doi.org/10.1117/12.2592286
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Michael Grunwald, Matthias Hermann, Fabian Freiberg, Matthias O. Franz, "Biologically-vision-inspired vs. CNN texture representations in novelty detection," Proc. SPIE 11843, Applications of Machine Learning 2021, 118430I (1 August 2021); https://doi.org/10.1117/12.2592286