1. Barrenechea, E., Bustince, H., De Baets, B., Lopez-Molina, C.: Construction of interval-valued fuzzy relations with application to the generation of fuzzy edge images. IEEE Trans. Fuzzy Syst. 19(5), 819–830 (2011)
2. Bowyer, K., Kranenburg, C., Dougherty, S.: Edge detector evaluation using empirical ROC curves. In: Proceedings of the 1999 IEEE Computer Society Conference on Computer Vision and Pattern Recognition, vol. 1, pp. 354–359 (1999)
3. Bustince, H., Barrenechea, E., Pagola, M., Fernandez, J.: Interval-valued fuzzy sets constructed from matrices: application to edge detection. Fuzzy Sets Syst. 160(13), 1819–1840 (2009)
4. Fodor, J., Yager, R., Rybalov, A.: Structure of uninorms. Int. J. Uncertainty Fuzziness Knowl.-Based Syst. 5, 411–428 (1997)
5. Gonzalez, R.C., Woods, R.E.: Digital Image Processing, 3rd edn. Prentice-Hall Inc., Hoboken (2006)