Quantum Image Edge Detection Based on Four Directional Sobel Operator. - Rajib Chetia; S. M. B. Boruah; Soumik Roy; P. P. Sahu (PReMI (1), 2019)

Quantum image edge detection using improved Sobel mask based on NEQR. - Rajib Chetia; S. M. B. Boruah; P. P. Sahu (Quantum Inf. Process., 2021)