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kotlinlang

Is there a standard imaging library for kotlin?  Something that would allow me to build up images and save the in various formats?  Perhaps do some light image processing?

You could try:
<https://github.com/korlibs/korim>

I've not tried it but this is from Soywiz, whose collection of Kotlin/Multplatform libs is highly regarded.

if you plan to do some image processing via opengl, then <https://github.com/kotlin-graphics/gli>

It’s not Kotlin, but Thumbnailator is an old, good, very stable choice if you’re only targeting JVM <https://github.com/coobird/thumbnailator>

I was looking for the same yesterday and found <https://github.com/sksamuel/scrimage|https://github.com/sksamuel/scrimage>