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Show HN: Open source colorizing grayscale images with NN

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Re: Show HN: Open source colorizing grayscale images with NN

#31

Post by Coincoin »

LoSboccacc wrote: post #12
taneq wrote: post #5

I love the last one. "But you didn't say what colour it was, so I made it a red truck."

Also the lighthouse's sky: "That's sky, it's surely blue!" Generally it's interesting to see nn thinking out missing details. I'd like to see images with an element deleted and a nn filling in black spots to see what level of shape recognition could do.

I'm pretty sure if you asked a group of humans to colorize the lighthouse you would probably get the same result.

There is no way, from the greyscale, to know that the sky should be orange.

Re: Show HN: Open source colorizing grayscale images with NN

#32

Post by SyneRyder »

syockit wrote: post #27
SyneRyder wrote: post #14

The title says it's open source, but I couldn't actually see what the license is? (Maybe I missed it?)

It is open source. You can see the source. The license is no-license, so you can (only) fork it. That way, people can clone from your username instead of the original author, although that doesn't make any difference as they're all hosted on GitHub.

In some countries, code is copyrighted by default unless the author specifies a different license or explicitly puts it into the public domain. Without a license (or asking the author for permission), I have to assume this code is copyright & All Rights Reserved, and that I can't do anything with it except read it.

It's still interesting and cool to see! Just not what I thought it was when I clicked on the link.

Re: Show HN: Open source colorizing grayscale images with NN

#34

Post by lucideer »

syockit wrote: post #27
SyneRyder wrote: post #14

The title says it's open source, but I couldn't actually see what the license is? (Maybe I missed it?)

It is open source. You can see the source. The license is no-license, so you can (only) fork it. That way, people can clone from your username instead of the original author, although that doesn't make any difference as they're all hosted on GitHub.

You seem to be getting downvotes because you don't understand what the term "open source" means, but nobody has offered to explain so:

Open source does not just mean you can see the source. From Wikipedia[0]:

"Open-source software is computer software with its source code made available with a license in which the copyright holder provides the rights to study, change, and distribute the software to anyone and for any purpose."

https://en.wikipedia.org/wiki/Open-source_software

Re: Show HN: Open source colorizing grayscale images with NN

#35

Post by pbhjpbhj »

WalterBright wrote: post #30
nightcracker wrote: post #9

Earlier quoted context omitted.

I see a potential problem with moving pictures - the neural network might decide that while red was an appropriate color for the truck in the last frame, blue is more likely in this frame.

I suspect that if an artist selected colors for a few key frames, the computer could figure out the rest of the frames.

How would they know that the vehicles, say, were supposed to be the same colour. I'm thinking The Italian Job - the same model of cars are used and are distinguished by their colours. Also what about when different vehicles are painted by the production team to look the same (for stunts say), the computer could rightly recognise them as different vehicles - how would it then know that they're supposed to be the same.

For such things it seems you'd need to check every shot change.

Re: Show HN: Open source colorizing grayscale images with NN

#36

Post by xiphias »

nxzero wrote: post #25
thomasahle wrote: post #16

Earlier quoted context omitted.

There might be a few scenes in between the viewings of the truck.

Are there any other issues or advantages that you're able to see that would be unique to movies? While I'm unable to think of a use, seems like there's the potiental for side channel analyis via music, dialog, background-noises, scripts, etc.

Script analysis would take much more effort probably, but it could work if the colour is in the movie script...in that case object detection gets important as well. Just using more training data to cover all the dog breeds and car colours would help a bit though.

Re: Show HN: Open source colorizing grayscale images with NN

#37

Post by jkrippy »

g_sch wrote: post #22

I'd be interested to see what kind of hidden biases this might reveal, especially about people, e.g. skin tone, eye color, etc.

The boy at the beach looks very orange/blue to me and reminds me of this:

http://www.slashfilm.com/orangeblue-contrast-in-movie-poster...

Re: Show HN: Open source colorizing grayscale images with NN

#39

Post by BugsBunnySan »

SyneRyder wrote: post #32
syockit wrote: post #27

Earlier quoted context omitted.

It is open source. You can see the source. The license is no-license, so you can (only) fork it. That way, people can clone from your username instead of the original author, although that doesn't make any difference as they're all hosted on GitHub.

In some countries, code is copyrighted by default unless the author specifies a different license or explicitly puts it into the public domain. Without a license (or asking the author for permission), I have to assume this code is copyright & All Rights Reserved, and that I can't do anything with it except read it. It's still interesting and cool to see! Just not what I thought it was when I clicked on the link.

Side note: "some countries" actually encompasses almost all the countries in the world, since source code falls under the Berne Convention: https://en.wikipedia.org/wiki/Berne_Convention, which automatically grants the author copyright on anything they make, unless they explicitly give it up...

Re: Show HN: Open source colorizing grayscale images with NN

#40

Post by m_mueller »

datenwolf wrote: post #11
m_mueller wrote: post #7

I'd apply it to an old B&W film to show off. Imagine Ben Hur or Citizen Kane in color!

> Ben Hur The widely known Ben Hur (1959), the one with the chariot race, already is in colour. Did you mean "Ben-Hur: A Tale of the Christ" from 1925?

Alright, I forgot about this. For some reason I've seen B&W still shots lately and forgot how I saw it.
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