Simulating Photometric Images of Moving Targets with Photon-mapping

Simulating Photometric Images of Moving Targets with Photon-mapping
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使用光子映射模拟移动目标的光度图像

DOI:
10.1088/1538-3873/ac240f
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发表时间:
2021-06
期刊:
IOP Publishing
影响因子:
--
通讯作者:
Yuchen Jiang
Yuchen Jiang
中科院分区:
其他
文献类型:
--
作者:
Jun-Ju Du;Shaoming Hu;Xu Chen;Hai Cao;Yuchen Jiang

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我们提出了一种新的,易于使用的方法的基础上的光子映射技术来模拟运动目标的光度图像。真实图像可以通过两个过程创建:光子跟踪和图像渲染。在成像过程中,考虑了光源的性质、望远镜的跟踪模式、点扩散函数(PSF)和CCD的规格。可以灵活地生成各种观测场景下的测光图像。我们将模拟图像与观察到的图像进行了比较。它们之间的残差可以忽略不计,并且它们之间的相关系数很高,对于1020对图像,中值为0.9379_{-0.0201}^{+0.0125}$,这意味着高保真度和相似度。该方法是通用的,可用于规划未来的测光运动目标,解释现有的观测,并提供测试图像的图像处理算法。
We present a novel, easy-to-use method based on the photon-mapping technique to simulate photometric images of moving targets. Realistic images can be created in two passes: photon tracing and image rendering. The nature of light sources, tracking mode of the telescope, point spread function (PSF), and specifications of the CCD are taken into account in the imaging process. Photometric images in a variety of observation scenarios can be generated flexibly. We compared the simulated images with the observed ones. The residuals between them are negligible, and the correlation coefficients between them are high, with a median of $0.9379_{-0.0201}^{+0.0125}$ for 1020 pairs of images, which means a high fidelity and similarity. The method is versatile and can be used to plan future photometry of moving targets, interpret existing observations, and provide test images for image processing algorithms.
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