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arXiv 1802.02137cs.CVstat.ML
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基于遮挡叠加沙漏的人脸特征点定位和遮挡估计

An Occluded Stacked Hourglass Approach to Facial Landmark Localization and Occlusion Estimation

University of California San Diego(加利福尼亚大学圣地亚哥分校)

Kevan Yuen, Mohan M. Trivedi

摘要:

驾驶员安全的关键步骤是观察驾驶员的活动,其中面部是提取信息的关键步骤,例如头部姿势,眨眼率,打哈欠,与乘客交谈,然后可以帮助获得更高级别的信息,例如分心,困倦,意图以及他们在看什么。在驾驶安全的背景下,重要的是系统在强光和遮挡下执行鲁棒估计,而且还能够检测何时发生遮挡,使得可以适当地考虑从面部的遮挡部分预测的信息。本文介绍了Occluded Stacked Hourglass,基于原始Stacked Hourglass网络用于身体姿势联合估计的工作,对其进行重新训练以处理检测到的面部窗口并输出68个遮挡热图,每个热图对应于一个面部地标。从这些热图中提取地标位置、遮挡水平和细化的面部检测分数,以拒绝误报。使用面部标志位置,可以提取诸如头部姿势和眼睛/嘴巴张开度的特征以导出驾驶员注意力和活动。该系统进行了评估的人脸检测,头部姿态,并在野外的各种数据集上的遮挡估计,定量和定性,并显示国家的最先进的结果。

英文摘要:

A key step to driver safety is to observe the driver's activities with the face being a key step in this process to extracting information such as head pose, blink rate, yawns, talking to passenger which can then help derive higher level information such as distraction, drowsiness, intent, and where they are looking. In the context of driving safety, it is important for the system perform robust estimation under harsh lighting and occlusion but also be able to detect when the occlusion occurs so that information predicted from occluded parts of the face can be taken into account properly. This paper introduces the Occluded Stacked Hourglass, based on the work of original Stacked Hourglass network for body pose joint estimation, which is retrained to process a detected face window and output 68 occlusion heat maps, each corresponding to a facial landmark. Landmark location, occlusion levels and a refined face detection score, to reject false positives, are extracted from these heat maps. Using the facial landmark locations, features such as head pose and eye/mouth openness can be extracted to derive driver attention and activity. The system is evaluated for face detection, head pose, and occlusion estimation on various datasets in the wild, both quantitatively and qualitatively, and shows state-of-the-art results.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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