full transcript

From the Ted Talk by Michael Rubinstein: See invisible motion, hear silent sounds

Unscramble the Blue Letters


So how do we do all that? We basically analyze the changes in the light that are recorded at every pixel in the vedio over time, and then we canrk up those changes. We make them bigger so that we can see them. The tkcriy part is that those signals, those changes that we're after, are extremely subtle, so we have to be very careful when you try to separate them from noise that always exists in videos. So we use some clever image processing techniques to get a very accurate mesnumaeret of the color at each pixel in the video, and then the way the color changes over time, and then we alfimpy those changes. We make them bigger to create those types of enhanced videos, or mieangfid videos, that actually show us those changes.

Open Cloze


So how do we do all that? We basically analyze the changes in the light that are recorded at every pixel in the _____ over time, and then we _____ up those changes. We make them bigger so that we can see them. The ______ part is that those signals, those changes that we're after, are extremely subtle, so we have to be very careful when you try to separate them from noise that always exists in videos. So we use some clever image processing techniques to get a very accurate ___________ of the color at each pixel in the video, and then the way the color changes over time, and then we _______ those changes. We make them bigger to create those types of enhanced videos, or _________ videos, that actually show us those changes.

Solution


  1. amplify
  2. crank
  3. magnified
  4. tricky
  5. measurement
  6. video

Original Text


So how do we do all that? 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. We make them bigger so that we can see them. The tricky part is that those signals, those changes that we're after, are extremely subtle, so we have to be very careful when you try to separate them from noise that always exists in videos. 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. We make them bigger to create those types of enhanced videos, or magnified videos, that actually show us those changes.

Frequently Occurring Word Combinations


ngrams of length 2

collocation frequency
tiny motions 4
naked eyes 2
video camera 2
image processing 2
blood flows 2
heart rate 2
magnify small 2
youtube user 2
recover sound 2
sound waves 2
waves create 2

ngrams of length 3

collocation frequency
sound waves create 2

Important Words


  1. accurate
  2. amplify
  3. analyze
  4. basically
  5. bigger
  6. careful
  7. clever
  8. color
  9. crank
  10. create
  11. enhanced
  12. exists
  13. extremely
  14. image
  15. light
  16. magnified
  17. measurement
  18. noise
  19. part
  20. pixel
  21. processing
  22. recorded
  23. separate
  24. show
  25. signals
  26. subtle
  27. techniques
  28. time
  29. tricky
  30. types
  31. video
  32. videos