face detection at 13 fps

[stephanschulz]

I was wondering what your experience is with the face detection frame rate.
For me it is 13 fps when two people are detected.

Thx.

[LingDong-]

Hmmm... For me the face detection is between 55 and 60 FPS, tried with 1-2 faces.

Though I do recall that one time when I re-compiled the app, just the face detection network and nothing else suddenly drops to around 10 FPS for no apparent reason. I think I did some build clean up and recompiled, and it was back at 60FPS since then. It is indeed very strange.

Are you using the prebuilt binary? In this case, it should be always 50+FPS. If you're compiling from Xcode, perhaps try clean up and rebuild?

[stephanschulz]

I just now downloaded a fresh OF 0.11.2
I get 21 fps with a single face after clean up and rebuild and running in Xcode. I get 24 fps when running the app via opening VisionOSC.app.

I am not sure what you mean by "prebuilt binary". no .app file is in the git repo if you mine that ?

I am on Xcode 13.4.1, macOS 12.6, Apple M1 Max

[stephanschulz]

I am revisiting this issue now with OF 0.12.0

The body detection runs at almost 60 fps but the face detection at 30 fps.

Some of the macOS build instruction do not apply anymore I think. So, I did not do these:

• File > Project Settings, Build System -> New Build System
• Build Phases, Link Binary with Libraries, Change "mac catalyst" to "always"
• Change deployment target to 11.3

I am on Xcode 13.4.1, macOS 12.6.8, Apple M1 Max

Here is my example code: https://github.com/stephanschulz/VisionOSC_M1/
I had to change some stuff related to autorelease error.

Thanks for any tips.

[stephanschulz]

adding this line
req.preferBackgroundProcessing = true;
seems to help a lot.
let's see if it might create other issues.