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brianmtully / flutter_google_ml_vision

Flutter Plugin for Google ML Kit Vision
BSD 3-Clause "New" or "Revised" License
47 stars 48 forks source link

Potential performance enhancements? #10

Closed cswkim closed 3 years ago

cswkim commented 3 years ago

First and foremost, thank you so much for this package. I had no issues setting this up and it seems to be working as intended. This may be out of scope for the library but I wanted to explore any potential areas for performance gains. I'm testing on an older physical device (iPhone 6S from 2015) and it runs fairly smooth using the 100ms delay between detection calls and I even upped the resolution to high. On a 60fps device I guess the 100ms delay equates to roughly detecting every 6 frames? What are everyone else's experience regarding frame rendering, battery life, memory, CPU, etc.? Using DevTools performance profiler the raster UI and UI thread times are steady and on average well below the threshold for jank, so all good there.

I came across this older flutter issue discussing image processing in isolates and garbage collection and wondered if it applied at all to this package? Are isolates in general something that could be used for performance gains?

brianmtully commented 3 years ago

Hi, I will look at that flutter issue and get back to you. I haven't had much issues with performance but any gains would be great.

brianmtully commented 3 years ago

Hi Chris,

This possible performance enhancement would be outside of the scope of this package. You will find a concatenatePlanes function in the example project though. You could try the suggested function as a replacement for the one in the example project and see if that improves performance.