Bicubic Interpolation - Computerphile

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Published 2016-11-23

Scaling images is usually smoother using bicubic interpolation. Dr Mike Pound explains why.

More on bicubic: bit.ly/Computerphile_bicubic1
Wikipedia bicubic article: bit.ly/computerphile_bicubic_wiki

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This video was filmed and edited by Sean Riley.

Computer Science at the University of Nottingham: bit.ly/nottscomputer

Computerphile is a sister project to Brady Haran's Numberphile. More at www.bradyharan.com/

All Comments (21)

@chlendimounir2834 7 years ago

i like this dude
@whuzzzup 7 years ago

We need a video on the "CSI: Crime Scene Investigation" interpolation.
@DuncanEllis 7 years ago

thanks for ex-splining that.
@TheArcher92 7 years ago

I really dig this guy. He's got humour and a clear way of explaining stuff. more please! :)
@javierbg1995 7 years ago

Dr Mike Pound is probably the best communicator in the channel. Always happy to see a new video featuring him!
@vladqoq 7 years ago

OMG, i just love the way how Dr Mike Pound sounds. Computerphile, please, make more videos with Dr.Mike Pound. HE IS AWESOME.
@TimeHarmonic 7 years ago

I really like the videos with Dr Mike Pound. They are the best
@budkin 5 years ago

I could watch Dr. Mike explain literally anything and find it engaging.
@NorbertHarrer 7 years ago

Ahh, I love it when Spiderman does computer science :-D
@KnownNever 7 years ago

Nothing like a cup of Dr. Mike to start the morning off right... great vid as always!
@yandodov 7 years ago

I like your videos with Mike. Make some more videos with Mike, please. Thanks!
@SazLowify 7 years ago

Thanks for this video, it explained a lot of problems I had with interpolation in the past.
@8eck 1 year ago

I'm impressed of how much this man knows. Every time i'm googling some complex stuff explanation, i see his tutorials in the results. :D
@ScienceSeance 7 years ago

What a great teacher. Pint deserved for this dude.
@WIImotionmasher 7 years ago

I'd like to say, that relatively new effect in these videos, where the piece of paper is distorted to look like a top down view, is cool.
@lawrencedoliveiro9104 6 years ago

Yes, worth talking about Lanczos. Also worth talking about the general principle of image/signal reconstruction using the sinc function, because all resampling techniques are basically shortcuts to avoid the high computational expense of sinc.
@SomethingUnreal 7 years ago

Eventually, this series of interpolation videos will come a full circle back to convolutional neural networks when it reaches the Waifu2x upscaling software.
@TheHardSteppa 2 years ago

Thank you for this. Now some of the other articles ive read actually make sense!
@unekdoud 7 years ago

Please make a playlist for Dr Mike Pound's Computerphile videos, they're great.
@logicalfundy 7 years ago

"auto" most likely changes the resizing algorithm being used when sizing up vs sizing down, or when resizing is minimal (1.1 times) vs when it is a large change (5 times or so).