評論
打印
We basically analyze the changes in the light that are recorded at every pixel in the video over time,and then we crank up those changes.
首先我們分析了錄像中每個像素的光線隨時間發生的變化，我們放大這些變化。
We make them bigger so that we can see them.
經過放大使我們肉眼可以看見這些變化。
The tricky part is that those signals,those changes that we're after, are extremely subtle,
棘手的部分是，那些信號，那些我們要放大的信號十分微小，
so we have to be very careful when you try to separate them from noise that always exists in videos.
所以我們必須把它們和視頻中存在的噪音區分出來。
So we use some clever image processing techniques to get a very accurate measurement of the color at each pixel in the video,and then the way the color changes over time,and then we amplify those changes.
所以我們應用了一些聰明的影像處理技巧精確的測量每個像素中的顏色，然后得出顏色隨時間的變化，再然后我們放大這些變化。
We make them bigger to create those types of enhanced videos, or magnified videos,that actually show us those changes.
我們可以放大這些變化，增強視頻、或放大視頻，這樣就可以演示出變化。
But it turns out we can do that not just to show tiny changes in color,but also tiny motions,and that's because the light that gets recorded in our cameras will change not only if the color of the object changes,but also if the object moves.
事實上，我們不僅可以展示顏色的細小變化，同樣也可以展示微小的運動,這是因為我們的攝像機不僅記錄物體的顏色變化，同樣也記錄了物體的運動。
So this is my daughter when she was about two months old.
這是我女兒，那時她才兩個月大。
It's a video I recorded about three years ago.
這是我三年前拍的。
And as new parents, we all want to make sure our babies are healthy,that they're breathing, that they're alive, of course.
作為初為人父母，我們要確保孩子的健康，當然是，確保呼吸，確保活著。
So I too got one of those baby monitors so that I could see my daughter when she was asleep.
所以我也買了個嬰兒監控器這也我可以在她睡著時看到她。
And this is pretty much what you'll see with a standard baby monitor.
這是標準嬰兒監控器所看到的。
You can see the baby's sleeping, but there's not too much information there.
您可以看到孩子睡著了，但沒有其他信息了。
There's not too much we can see.
我們看不到更多東西。
Wouldn't it be better, or more informative, or more useful,if instead we could look at the view like this.
可不可以更好點兒，有更多信息，更有用，就像這樣。
So here I took the motions and I magnified them 30 times,and then I could clearly see that my daughter was indeed alive and breathing.
這里我放大了運動30倍，這樣我就可以真切地看到我女兒還活著，在呼吸。
Here is a side-by-side comparison.
這是效果對比。
So again, in the source video, in the original video,there's not too much we can see,but once we magnify the motions, the breathing becomes much more visible.
同樣，在原始視頻上，我們看不到什么，但是一旦我放大了運動，呼吸變得肉眼可見了。
And it turns out, there's a lot of phenomena we can reveal and magnify with our new motion microscope.
事實上，我們用我們的運動顯微鏡可以揭示很多現象。
We can see how our veins and arteries are pulsing in our bodies.
我們可以看到體內靜脈和動脈的脈動。
We can see that our eyes are constantly moving in this wobbly motion.
我們可以看到我們的眼睛在不斷運動在晃動中。
And that's actually my eye,and again this video was taken right after my daughter was born, so you can see I wasn't getting too much sleep.
這實際上是我的眼睛，同樣，這段視頻拍攝于我女兒出生不久之后，所以你可以看到我睡得不多。
Even when a person is sitting still,there's a lot of information we can extract about their breathing patterns, small facial expressions.
即使當人在靜止坐著，我們也可以提取許多信息如呼吸節律，面部表情微小變化。
