Abstract
Quantum image processing has attracted much attention since it offers a potential solution to efficiently calculate some hard problems much faster than classical image processing. In particular, it is a basic operation to change each image pixel into black or white, named as a binary image. Here we present novel multi-bit quantum comparators to realize quantum image binarization. These comparators compare two quantum logic states and identify which of them is the largest. We analyze the superior performance of our proposed comparators in terms of quantum cost, quantum delay and auxiliary bits compared with the existing comparators. Furthermore, our quantum image binarization exploits the advantages of our proposed multi-bit comparators to change the values of image pixels into 0 or 255.
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Acknowledgements
This work is supported by the National Natural Science Foundation of China (Nos. 61762014 and 61762012), the Science and Technology Project of Guangxi (Nos. 2018JJA170089 and 2018JJA170083), and the Research Fund of Guangxi Key Lab of intelligent integrated automation. Thanks to Shuxiang Song for his help in the design of the whole circuit.
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Xia, H., Li, H., Zhang, H. et al. Novel multi-bit quantum comparators and their application in image binarization. Quantum Inf Process 18, 229 (2019). https://doi.org/10.1007/s11128-019-2334-2
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DOI: https://doi.org/10.1007/s11128-019-2334-2