abstract
- Quantum image processing has been developing rapidly in recent years. In this paper, the edge detection algorithm for quantum images is proposed. Three steps are consisted: quantum image smoothing, finding the highlight gradient and quantum edge tracking. In order to implement the above processes, a quantum comparator is designed and quantum circuits for all the steps are given. The proposed quantum edge detection algorithm makes full use of quantum parallelism. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.