机器视觉通常用于分析图像,并生成一个对被生成图像物体或场景的描述,这些描述最终用于辅助或决定机器人控制决策。 一门基于计算机图像识别和分析的技术。主要用于自动检测,流程控制或机器人引导等。

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深度学习的发明,使得人工智能技术迎来了新的机遇,再次进入了蓬勃发展期。其涉及到的隐私、安全、伦理等问题也日益受到了人们的广泛关注。以对抗样本生成为代表的新技术,直接将人工智能、特别是深度学习模型的脆弱性展示到了人们面前,使得人工智能技术在应用落地时,必须要重视此类问题。本文通过对抗样本生成技术的回顾,从信号层、内容层以及语义层三个层面,白盒攻击与黑盒攻击两个角度,简要介绍了对抗样本生成技术,目的是希望读者能够更好地发现对抗样本的本质,对机器学习模型的健壮性、安全性和可解释性研究有所启发。

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Understanding and interpreting human actions is a long-standing challenge and a critical indicator of perception in artificial intelligence. However, a few imperative components of daily human activities are largely missed in prior literature, including the goal-directed actions, concurrent multi-tasks, and collaborations among multi-agents. We introduce the LEMMA dataset to provide a single home to address these missing dimensions with meticulously designed settings, wherein the number of tasks and agents varies to highlight different learning objectives. We densely annotate the atomic-actions with human-object interactions to provide ground-truths of the compositionality, scheduling, and assignment of daily activities. We further devise challenging compositional action recognition and action/task anticipation benchmarks with baseline models to measure the capability of compositional action understanding and temporal reasoning. We hope this effort would drive the machine vision community to examine goal-directed human activities and further study the task scheduling and assignment in the real world.

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