retrieving image metadata

[yakir12]

In the interest of at least mentioning this:
Wouldn't it be nice to be able to load an image and get all its metadata? Would you be interested in a PR where this is done with exiftool by "shelling out", to begin with, and then later on, hopefully, by calling exiftool's libraries directly (if that's even possible)?

[timholy]

Yes, that's potentially quite interesting.

Unless things have changed since our early experiments with ImageMagick, shelling out is really slow. If you have a folder of 1000s of images you'll be grumpy. But seems like a fine way to start.

If you do decide to tackle the library, docs are here. You could use ImageMagick as a model, but in many ways QuartzImageIO might be cleaner; the ImageMagick library is just a little painful.

[ashwanirathee]

Hey Tim and Yakir,
I was thinking of streamlining the metadata support by using exifviewer and ImageMetadata.jl together

julia> using Colors, ImageMetadata, Dates
## so what I am thinking is read the image and directly provide them in (RGB ImageMeta) format to streamline the experience
julia> img = ImageMeta(fill(RGB(1,0,0), 3, 2), date=Date(2016, 7, 31), time="high noon") 
RGB ImageMeta with:
  data: 3×2 Array{RGB{N0f8},2} with eltype RGB{N0f8}
  properties:
    date: 2016-07-31
    time: high noon

I wanted to know what you guys think of it and how should we do it. Johnny told me that Tim uses it for medical image processing, so wanted to know how you currently work it out with associated metadata?

[johnnychen94]

CRef: this exifviewer project is part of the GSoC'22 project JuliaImages/Images.jl#1000