I started clicking some black and white photos (monochrome) using the iPhone.

  1. I would like to see them in a separate folder, is there some setting provided by iOS to do so?

  2. If there is no such option supported by iOS, that is, by the default Photos app , are there any third-party apps (available on Apple App Store) that can find and show ONLY the monochrome images i have taken.

  3. If no such app exists, how can i get started with making such an app? Any libraries that will save my time and avoid reinventing the wheel?

I hope photos clicked using the Camera are labelled/categorized with such information in EXIF or somewhere else (like a list of files in the library stored on device with such attributes) so that writing an app would be easier and less time-taking as compared to loading every image and checking if the pixel patterns fits that of a monochrome image. (imagine checking thousands of photos)

  • Have you tried searching for "Black and White"? I know it's not a great solution, but it could work to identify them and put them in folders manually. – Andre Feb 8 '18 at 11:25
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    @Andre yes, that didn't help. searching using that query resulted in zero relevant results. – computingfreak Feb 9 '18 at 2:45
  • Sadly, there doesn't appear to be an EXIF tag that indicates monochrome. Some lack the ColorSpace EXIF tag, but it seems like it happens with all filters, even color filters. – NetMage Feb 10 '18 at 0:18

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