Asymmetric scaling scheme over the two dimensions of a quantum image
Asymmetric scaling scheme over the two dimensions of a quantum image
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DOI：
10.1007/s11128-020-02837-9
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发表时间：
2020-08
影响因子：
2.5
通讯作者：
Ri-gui Zhou;Yu Cheng;Xiaofang Qi;Han Yu;Nan Jiang
中科院分区：
文献类型：
--
作者：
Ri-gui Zhou;Yu Cheng;Xiaofang Qi;Han Yu;Nan Jiang
虽然量子图像缩放算法近年来得到了广泛的研究，但几乎所有的算法都要求在水平和垂直方向上同时放大或缩小量子图像。然而，在一个方向上放大量子图像，在另一个方向上缩小它的缩放方案很少涉及。提出了一种基于扩展双线性插值法的量子图像缩放方案，首次实现了量子图像在两个维度上的非对称缩放。首先，采用改进的新型增强数字图像量子表示(INEQR)来表示水量子图像，并对双线性插值法进行了改进，利用原始图像中相邻的两个像素进行了内插。然后，设计了量子图像非对称缩放的具体电路。最后，给出了仿真结果，并用量子电路的复杂度和峰值信噪比(PSNR)与另一篇论文中提出的类似方案进行了定量比较。结果表明，与其他方案相比，该方案具有更低的计算复杂度和更好的缩放效果。
Although quantum image scaling algorithms have been widely studied in recent years, almost all of them require the quantum image to be enlarged or reduced simultaneously in the horizontal and vertical directions. However, the scaling schemes that enlarge the quantum image in one direction and shrink it in the other direction are rarely involved. In this paper, a quantum image scaling scheme based on the extension of the bilinear interpolation method is proposed to achieve asymmetric scaling over the two dimensions of a quantum image for the first time. Firstly, the improved novel-enhanced quantum representation of digital images (INEQR) is employed to represent aquantum image, and the bilinear interpolation is improved to use two adjacent pixels in the original image for interpolation. Then, the concrete circuits for the asymmetric scaling of quantum images are designed. Finally, the simulation results are given, and the complexity of the quantum circuits and the peak signal-to-noise ratio (PSNR) are used to quantitatively compare with the similar scheme proposed in another paper. The results show that the proposed scheme has lower computational complexity and better scaling effect than another scheme.