edgefirst-tracker
ByteTrack multi-object tracking. Installs alone — it does not require the tensor, image, or decoder wheels.
Part of the EdgeFirst HAL
edgefirst-tracker is one of five Python packages built from the EdgeFirst Hardware Abstraction Layer.
The EdgeFirstAI/hal repository is the home for all of them — source, issue tracker, architecture documentation and release notes.
| Package | Provides |
|---|---|
edgefirst-tensor |
Zero-copy tensor allocation and host/GPU/CUDA mapping |
edgefirst-codec |
JPEG and PNG decoding directly into pre-allocated tensors |
edgefirst-image |
GPU-accelerated colour conversion, resize, letterbox, tiling and drawing |
edgefirst-decoder |
YOLO and ModelPack output decoding |
edgefirst-tracker |
ByteTrack (this package) |
Installation
pip install edgefirst-tracker
Requires Python 3.8 or newer and NumPy. Wheels are published for Linux (x86_64, aarch64), macOS (arm64), and Windows (x86_64). This package does not depend on edgefirst-tensor.
Packages install under the PEP 420 edgefirst.* namespace, so the import is edgefirst.tracker.
Quick start
ByteTrack.update takes detections for one timestamp and returns a list of TrackInfo (or None for unmatched rows) of the same length as the input:
import numpy as np
from edgefirst.tracker import ByteTrack
tracker = ByteTrack()
# boxes is (N, 4) XYXY; scores and labels are length N.
boxes = np.array([[0.1, 0.2, 0.3, 0.4]], dtype=np.float32)
scores = np.array([0.9], dtype=np.float32)
labels = np.array([0], dtype=np.intp)
timestamp_ns = 0
tracks = tracker.update(boxes, scores, labels, timestamp_ns)
for t in tracks:
if t is None:
continue
print(t.uuid, t.tracked_location, t.count)
Decoder.decode_tracked on the edgefirst-decoder wheel accepts this ByteTrack (or any object with an update method).
Parameters
| Argument | Default | Meaning |
|---|---|---|
high_conf |
0.7 |
Detections above this score take the first association pass |
iou |
0.25 |
IoU gate for matching a detection to a track |
update |
0.25 |
Kalman update blending factor |
lifespan_ns |
500_000_000 |
Drop a track that has not matched for this many nanoseconds (500 ms) |
Errors
update raises if boxes, scores, and labels disagree on N, or if boxes is not shape (N, 4). Empty detections (N == 0) are valid — unmatched tracks age and expire according to lifespan_ns.
Performance
Association is CPU-only (Kalman + IoU). Typical cost is microseconds per frame at tens of detections; it does not allocate GPU tensors and does not link libedgefirst_tensor. Build the tracker once and call update every frame.
Versioning and changelog
All five edgefirst-* packages are versioned and released together with the HAL itself. Release notes live in the single CHANGELOG.md.
Links
- Changelog — release notes for all packages
- Source — the
halmonorepo - Issue tracker
- Package documentation — the underlying Rust crate
- EdgeFirst
License
Apache-2.0
1 maintainer
Metadata
1 maintainer
Release files for edgefirst-tracker 0.35.0
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | Provenance | Actions |
|---|---|---|---|---|
| edgefirst_tracker-0.35.0.tar.gz | 2.2 MB | With provenance | Details for edgefirst_tracker-0.35.0.tar.gz |
Built distributions (wheels)
Total release size: 5.2 MB
Release files / edgefirst_tracker-0.35.0.tar.gz
| Download URL | edgefirst_tracker-0.35.0.tar.gz |
|---|---|
| Size | 2.2 MB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
ed7fb1d9cbe11def3481c4a5895f4efe825ddcdea611579cb686327ef619841f
|
|
BLAKE2b-256 checksum How to use checksums |
4fb3dd2fbd8932f3853d2f9f5c542d650a09a332261ab999b4c57c662dfd5def
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Oct 12, 2026.
Transparency logRelease files / edgefirst_tracker-0.35.0-cp311-abi3-win_amd64.whl
| Download URL | edgefirst_tracker-0.35.0-cp311-abi3-win_amd64.whl |
|---|---|
| Size | 314.8 kB |
| Tags | CPython 3.11 Windows x86-64 abi3 |
|
SHA-256 checksum How to use checksums |
c598d0b1354ea944c5a2c57b0502e45e5cd52dd89974f799a4698c503be39f09
|
|
BLAKE2b-256 checksum How to use checksums |
ad10080fffbc72af4bd82607b90e42ea434200e7e074bc764c697b46997d0737
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Oct 12, 2026.
Transparency logRelease files / edgefirst_tracker-0.35.0-cp311-abi3-manylinux_2_17_x86_64.manylinux2014_x86_64.whl
| Download URL | edgefirst_tracker-0.35.0-cp311-abi3-manylinux_2_17_x86_64.manylinux2014_x86_64.whl |
|---|---|
| Size | 391.3 kB |
| Tags | CPython 3.11 Linux glibc 2.17+ x86-64 abi3 |
|
SHA-256 checksum How to use checksums |
77fe88b862f3f956064981c2ac536195b7d51e654e1ff7a0c958fdca37a5761e
|
|
BLAKE2b-256 checksum How to use checksums |
669bb74e97ddb95a03fdc1a5cc30439154feaae39026e6585d2f4e14fafb224e
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Oct 12, 2026.
Transparency logRelease files / edgefirst_tracker-0.35.0-cp311-abi3-manylinux_2_17_aarch64.manylinux2014_aarch64.whl
| Download URL | edgefirst_tracker-0.35.0-cp311-abi3-manylinux_2_17_aarch64.manylinux2014_aarch64.whl |
|---|---|
| Size | 396.2 kB |
| Tags | CPython 3.11 Linux glibc 2.17+ ARM64 abi3 |
|
SHA-256 checksum How to use checksums |
daa023cf66af7ed403b655c5dfe7402a8bbf510fff78654f3037fc5f92863e85
|
|
BLAKE2b-256 checksum How to use checksums |
a84eada2db5d7cfd4bf556e41f6b5fdba4fd1860c1211f3e277c60080c6daa1d
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Oct 12, 2026.
Transparency logRelease files / edgefirst_tracker-0.35.0-cp311-abi3-macosx_11_0_arm64.whl
| Download URL | edgefirst_tracker-0.35.0-cp311-abi3-macosx_11_0_arm64.whl |
|---|---|
| Size | 390.6 kB |
| Tags | CPython 3.11 abi3 macOS 11.0+ ARM64 |
|
SHA-256 checksum How to use checksums |
155a243def3a4f5b97578d984184b803063caa6a32b8aad04f35847e97230f46
|
|
BLAKE2b-256 checksum How to use checksums |
74e325c863f2d80417d39f333c4b153e592cd77c29503eb87dab48c15cd452b4
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Oct 12, 2026.
Transparency logRelease files / edgefirst_tracker-0.35.0-cp38-abi3-win_amd64.whl
| Download URL | edgefirst_tracker-0.35.0-cp38-abi3-win_amd64.whl |
|---|---|
| Size | 318.9 kB |
| Tags | CPython 3.8 Windows x86-64 abi3 |
|
SHA-256 checksum How to use checksums |
eef1f90e7530afb1b155c32bbc462013c7b39d25d748115ead7524a6d6cf9fff
|
|
BLAKE2b-256 checksum How to use checksums |
7d3b8aaf825ecb489a1315c62a692587182d2efd1da727ee18e81dee0d9109ca
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Oct 12, 2026.
Transparency logRelease files / edgefirst_tracker-0.35.0-cp38-abi3-manylinux_2_17_x86_64.manylinux2014_x86_64.whl
| Download URL | edgefirst_tracker-0.35.0-cp38-abi3-manylinux_2_17_x86_64.manylinux2014_x86_64.whl |
|---|---|
| Size | 414.8 kB |
| Tags | CPython 3.8 Linux glibc 2.17+ x86-64 abi3 |
|
SHA-256 checksum How to use checksums |
f770495a3b0407bc75740f892a47a5903ae42af1c46aa0beb85a2b236598c5c5
|
|
BLAKE2b-256 checksum How to use checksums |
195005970b0c5d9278ef55257a57c886deae2298abffa74e336101e96c4ec1b9
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Oct 12, 2026.
Transparency logRelease files / edgefirst_tracker-0.35.0-cp38-abi3-manylinux_2_17_aarch64.manylinux2014_aarch64.whl
| Download URL | edgefirst_tracker-0.35.0-cp38-abi3-manylinux_2_17_aarch64.manylinux2014_aarch64.whl |
|---|---|
| Size | 400.2 kB |
| Tags | CPython 3.8 Linux glibc 2.17+ ARM64 abi3 |
|
SHA-256 checksum How to use checksums |
0b6a8219d641570bf91b347235ef1157687c338a54a0433a8f1710d5631768d2
|
|
BLAKE2b-256 checksum How to use checksums |
59b8b2e0793c1e462763e0628541d8ae0e6ac444eba3bb1a811fa2d88e110948
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Oct 12, 2026.
Transparency logRelease files / edgefirst_tracker-0.35.0-cp38-abi3-macosx_11_0_arm64.whl
| Download URL | edgefirst_tracker-0.35.0-cp38-abi3-macosx_11_0_arm64.whl |
|---|---|
| Size | 394.4 kB |
| Tags | CPython 3.8 abi3 macOS 11.0+ ARM64 |
|
SHA-256 checksum How to use checksums |
83b464c85837333bca51116bddeb10d497ab7b0d713ed8c05906dd3951bb8ea6
|
|
BLAKE2b-256 checksum How to use checksums |
b774084d3a8a2d336624a919200e4a078a799cb25c4e92368b13f8d357da09ca
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Oct 12, 2026.
Transparency logSecurity for edgefirst-tracker 0.35.0
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
Full provenance
All 9 files in this release have been uploaded with provenance metadata.
Attestation for edgefirst_tracker-0.35.0.tar.gz
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Oct 12, 2026.
Transparency logA note on package security
PyPI is a repository for distributing packages, not a service for auditing them. While third-party security researchers and our staff do their best to detect and remove malicious packages, PyPI cannot guarantee the quality, security or suitability of any given package.
To learn more about protecting yourself from malicious actors, visit our package security documentation.
