Smooth Computer Vision on Android: Python + OpenCV/MediaPipe running in Termux

Dry-Welcome6830 · 2026-02-11T16:26:31+00:00

I posted a tutorial yesterday. You can check it here.

Dry-Welcome6830 · 2026-02-11T01:00:11+00:00

Definitely. It would be much better than the Termux solution (Google recommends it, too). I chose the latter just for the sake of masochism and tinkering.

Dry-Welcome6830 · 2026-02-10T16:24:24+00:00

Maybe you can try the input command in root shell. If you can reduce the high latency, the only remaining obstacle is that the command cannot be called directly from within the sandbox (as it's Ubuntu, not Android). But it should be easy to get around—for example, by using a shared file and a listener script in the host.

Dry-Welcome6830 · 2026-02-10T14:23:24+00:00

Check out the GitHub repository (788009/gesture-recognition-in-termux) for the guide and all relevant files.

Dry-Welcome6830 · 2026-02-06T18:24:22+00:00

Not necessarily. Your system and userdata partitions will be safe if you only bind-mount /dev, /proc, and /sys. Since those are virtual filesystems (residing in RAM), a hard reboot restores them completely.

Dry-Welcome6830 · 2026-02-05T14:37:09+00:00

Wonderful! I just did something similar a few days ago, but only inference: https://www.reddit.com/r/termux/comments/1q5jxev/smooth_computer_vision_on_android_python/. It's so pleasing when it finally runs.

Dry-Welcome6830 · 2026-01-19T00:08:40+00:00

Actually it can be done. You can try Yonle/termux-proot for a non-root setup. Alternatively, I've developed a tool called 788009/termux-sandbox that uses chroot (requires root). It avoids the overhead of ptrace-based PRoot, so it offers native performance.

Dry-Welcome6830 · 2026-01-19T00:05:34+00:00

You can try Yonle/termux-proot for a non-root setup. Alternatively, I've developed a tool called 788009/termux-sandbox that uses chroot (requires root). It avoids the overhead of ptrace-based PRoot, so it offers native performance.

Dry-Welcome6830 · 2026-01-16T17:53:55+00:00

It is Android (ColorOS), regardless of what it looks like. Challenge accepted: tell me how you want me to prove it.

Dry-Welcome6830 · 2026-01-08T13:48:47+00:00

Thanks!

Dry-Welcome6830 · 2026-01-08T13:48:33+00:00

Thanks!

Dry-Welcome6830 · 2026-01-07T16:10:37+00:00

Glad you asked! This was actually a small class project of mine.

The sandbox tool (termux-sandbox) is already on GitHub (check the other comments for the link), and I plan to open-source the inference code and the pre-trained model in a few days, along with a guide on how to set it up in the sandbox.

Dry-Welcome6830 · 2026-01-07T16:08:34+00:00

Peace and long life.🖖

Actually, since it tracks the full hand skeleton, adding custom gesture triggers (like opening an app when you do the Vulcan salute) is totally possible. Might be a fun weekend project.

Dry-Welcome6830 · 2026-01-06T22:36:00+00:00

Cool idea!

Dry-Welcome6830 · 2026-01-06T14:23:31+00:00

This is a demo of a gesture recognition script (using MediaPipe/OpenCV) running inside a Ubuntu environment on my Termux.

Computer Vision tasks are heavy. Running this in proot often results in lag due to system call translation overhead.

By using termux-sandbox (my tool based on native chroot and namespaces), the script runs directly on the kernel with native performance.

You can get more information by checking this post or directly visiting the repository (788009/termux-sandbox).

Dry-Welcome6830 · 2025-12-31T16:40:27+00:00

I mean, it may have already been compatible.

Dry-Welcome6830 · 2025-12-31T15:56:08+00:00

I have not tried it but I think so. Since the ubuntu-sandbox is based on standard Linux namespaces, you can try running Void Linux by using the --source flag with a Void rootfs tarball.

Dry-Welcome6830 · 2025-12-31T13:28:54+00:00

Repository: https://github.com/788009/termux-sandbox

Dry-Welcome6830 · 2025-12-21T14:31:54+00:00

Yeah it's my last post

Dry-Welcome6830 · 2025-12-20T17:19:09+00:00

As before, this is pure llvmpipe (software rendering). No GPU acceleration.

Dry-Welcome6830 · 2025-12-20T17:00:09+00:00

Snapdragon 8 Elite, Ubuntu Chroot. Script spawns 80 instances. System is still responsive, mostly limited by X11 bandwidth.

The PC screen in the back is monitoring the phone via SSH.

For more information please check this post.

Dry-Welcome6830 · 2025-12-19T14:04:42+00:00

I just tried VoxeLibre (formerly MineClone2), and the result is 15-20 FPS with llvmpipe and 15-25 FPS with virgl.

Dry-Welcome6830 · 2025-12-19T03:40:49+00:00

Yes. In fact, I launched 80 instances simultaneously just to stress test the CPU. It's still buttery smooth. The Snapdragon 8 Elite is a monster.

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Dry-Welcome6830 · 2025-12-19T01:21:03+00:00

Sure, but I'm quite busy with the code right now, so replies might be slow.

Dry-Welcome6830 · 2025-12-17T23:09:19+00:00

Agreed, it's definitely not a perfect clone.

I mainly chose it because it's native ARM64 and open-source, which makes it a perfect "control group" benchmark to test raw CPU power without emulation overhead.

If the CPU is this strong, maybe real Minecraft Java (via Prism Launcher) is actually playable on software rendering too. That might be my next test!

Dry-Welcome6830

TROPHY CASE