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JuliaImages / juliaimages.github.io

Documentation For JuliaImages
https://juliaimages.org
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tutorial on integral image #231

Open johnnychen94 opened 2 years ago

johnnychen94 commented 2 years ago

I believe we need an IntegralArrays version of https://juliaimages.org/stable/examples/color_channels/indexed_image/#demo_indexed_image

timholy commented 2 years ago

That's an IndirectArray tutorial, not an IntegralArray tutorial. I don't see any tutorials that use the (soon to be deprecated) integral_image, am I missing something?

johnnychen94 commented 2 years ago

Oh sorry for the inaccuracies. I notice the examples in https://github.com/JuliaImages/IntegralArrays.jl is pretty thin, I think we need a more insightful explanation on why we need this type (e.g., performance), and how it is used in image processing just like the IndirectArray demo.

timholy commented 2 years ago

Yeah, it's not a widely used type (so far, anyway). I once knew applications that needed it, but I kind of forget them now. Looks like https://www.codeproject.com/Articles/441226/Haar-feature-Object-Detection-in-Csharp has a practical use-case. (This was something that the very first GSoC student was interested in.)

johnnychen94 commented 2 years ago

https://github.com/JuliaImages/ImageFiltering.jl/issues/241 is a good use case; we can also use this as a demo.