Hi all
I am wonder if anyone knows of software ,preferably with command line support, that detects and converts negative images . Like a file negative to a positive image. Dont need colour support.
Thanks
Paul
Daniel Reetz, the founder of the DIY Book Scanner community, has recently started making videos of prototyping and shop tips. If you are tinkering with a book scanner (or any other project) in your home shop, these tips will come in handy. https://www.youtube.com/channel/UCn0gq8 ... g_8K1nfInQ
Negative images
Re: Negative images
I'm not a photography expert, so maybe I'm missing something, but I'm not sure how software would reliably detect negatives. But if you know an image is a gray-scale negative, I think you could do image inversion in Gimp or Photoshop. I doubt you could do it with a command line, but if you're using Windows, you could probably write something to do most of the work with AutoHotKey or similar utilities.
Re: Negative images
can you post such a negative image and tell more about the situation, image magic can do such task or imagej
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Re: Negative images
We might have different understandings of the word "negate", but ImageMagick can handle all of those cases:
Making this work automatically would be a pain for Windows, but for Linux and Mac, it's quite easy to do.
Code: Select all
convert black-white.png -negate white-black.png
convert upside-down.png -rotate 180 rightside-up.png
convert upside-down.png -flip rightside-up.png
Re: Negative images
Hi all
this is what i mean by a negative image , just want a black and white output back to positive
thx , will try imagemagick as well

this is what i mean by a negative image , just want a black and white output back to positive
thx , will try imagemagick as well
