PickVidsThe Visual Microphone: Passive Recovery of Sound from Video
推荐理由
it can be possible to extract audio from video, by careful processing of the small motions the sound induced in objects in the frame
说明
这是2014年由Abe Davis's Research发布的一部演示，主题归在Information theory & signal processing。它讲的是visual microphone这一支里的具体问题，而不是把整个领域扫一遍。适合按兴趣直接看、不打算先补课的人。内容上可以概括成：MIT researchers show that sound can be recovered from silent video by analyzing tiny vibrations in objects such as a potato chip bag. It works even with consumer cameras by using rolling shutter.这些读者给出的理由，核心是：HN commenters cite it as the classic demonstration of audio recovery from video in surveillance and privacy discussions.讲法不绑某一条新闻，过几年仍然可以当材料看。从2015年到2026年，有1位不同的读者在1个不同月份把它推荐出来，其中明确叫别人去看的有0次。适合先看结果再决定要不要深挖的人。先看它做成了什么。如果已经会了基本定义，就把注意力放在它怎么把visual microphone变成能跟着复述的例子。
视频信息
- 频道
- Abe Davis's Research
- 时长
- 4 分 32 秒
- 发布年份
- 2014
同主题更多
- But what is the Fourier Transform? A visual introduction.
- D/A and A/D | Digital Show and Tell (Monty Montgomery @ xiph.org)
- The Fast Fourier Transform (FFT): Most Ingenious Algorithm Ever?
- (1/4) Intro/History: Introducing a 100-year-old mechanical computer
- David Kriesel: Traue keinem Scan, den du nicht selbst gefälscht hast
- The more general uncertainty principle, regarding Fourier transforms