经济日报：人口之变是挑战也是转型契机

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经济日报：人口之变是挑战也是转型契机

模拟雨景同时生成路面积水和反光

给街景加上几道雨丝，未必能重现摄像机在真实雨天看到的情况。街道上的水洼、倒影与路面几何位置相关，处理不当会让本来清楚的场景边界发生变化。CascadeRS团队将深度和语义分割信息用于生成雨景，在保持原场景结构的同时加入雨丝、湿表面反射和积水，并可控制合成效果。 Melissa Tijink等人的这项研究收录在11月6日更新的计算机科学预印本列表中。

研究者通过用户观察研究和定量指标评估合成画面的真实感，又以城市街景为基础制作了Cityscapes-CascadeRS数据集，用来研究计算机视觉模型在真实雨天任务中的表现。团队公开了代码和数据。这样，研究人员可以从同一张原图出发改变雨天效果，比较下游系统对雨丝、反光和积水的反应。视觉上逼真与模型在真实道路上可靠，仍是需要分别检验的两个问题。

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