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O'Reilly Platform
book
量子计算机编程:从入门到实践
by
Eric R. Johnston
,
Nicholas Harrigan
,
Mercedes Gimeno-Segovia
July 2021
Beginner to intermediate
274 pages
7h 10m
Chinese
Posts & Telecom Press
Content preview from
量子计算机编程:从入门到实践
178
|
第
11
章
理想采样参考
传统蒙特卡罗方法
平均像素误差:
2%
零误差像素:
34%
量子超采样
平均像素误差:
1%
零误差像素:
41%
图
11-1
:
QSS
的结果与理想结果和传统算法结果对比。这些结果揭示了被采样图像中的噪声特性变化
假设你需要在
15
分钟内手动去除一幅图像中的可见噪声。对于
QSS
采样图像,任务相当
简单;而对于传统采样图像,这个任务几乎是不可能完成的。
QSS
组合了一系列
QPU
原语:第
5
章的量子算术、第
6
章的振幅放大和第
7
章的量子傅
里叶变换。为了了解如何利用这些原语,我们首先需要了解更多关于超采样技术的背景
知识。
11.2
传统超采样
光线跟踪
(
ray tracing
)是一种由计算机生成图像的技术,它使用更多的计算资源来生成质
量更高的图像。图
11-2
展示了如何利用光线跟踪技术根据场景生成图像。
图像
一个像素点
场景数据
子像素
(每个像素点都有多个随机样本。
评估但不存储这些样本)
图
11-2
:光线跟踪为最终图像的每个像素点都采集多个样本
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ISBN: 9787115566355