ultralytics 8.4.161

v8.4.161 - Fix RT-DETR device moves, fused resume, empty images, bracket paths, odd plot grids and save=False uploads (#26301)

on Python PyPI

🌟 Summary

Ultralytics 8.4.161 is a reliability and usability release: it fixes several training, inference, plotting, and upload bugs, while improving dataset handling and clarifying export and Platform documentation.

📊 Key Changes

• 🛠️ Fixed six package issues in PR #26301, the release’s main change:
  • RT-DETR decoder tensors now move correctly between devices, helping prevent validation or prediction device-mismatch errors.
  • Resuming older Adam/AdamW checkpoints now preserves the optimizer’s runtime fused setting.
  • Empty image files no longer crash prediction runs.
  • Training results can be read from paths containing bracket characters, and plots handle odd numbers of result panels correctly.
  • Platform uploads can fall back to last.pt when save=False means no best.pt was created.
• 🗂️ Improved dataset and training utilities: .tgz archives now extract correctly, semantic segmentation can skip unnecessary polygon processing, and fuzz testing better recognizes expected missing-split errors.
• 🍎 Made CoreML export failures clearer: removed an invalid fallback that could hide the original save error behind a misleading file-extension error.
• 📘 Expanded export guidance: documented the device option for Hailo and Ascend, and explained why static exports may produce different predictions on non-square images.
• ☁️ Refreshed Platform documentation for dataset image copying and face blurring, annotation providers, deployment pages and monitoring, and related API and billing details.

🎯 Purpose & Impact

• ✅ More dependable prediction and training-resume workflows, especially with RT-DETR, older checkpoints, and imperfect image datasets.
• 📈 Fewer failures when reading results or generating plots, including with unusual file paths and uneven metric layouts.
• ⚡ Less unnecessary processing for semantic datasets where polygon data is not used.
• 🔍 More actionable CoreML errors and clearer export settings help users diagnose problems and choose deployment options.
• 🧭 Updated Platform guidance makes dataset, annotation, billing, and deployment workflows easier to understand.

What's Changed

• Document device export argument for OpenVINO, Hailo and Ascend by @raimbekovm in #26286
• Tighten export mode docs and explain static export prediction differences by @Vaishnavi220506 in #26285
• Align Platform docs with deployment pages, image copy, face blurring and new annotation providers by @raimbekovm in #26297
• Classify wrapped dataset split errors as expected in CLI fuzzing by @aswanth-07 in #26299
• Remove invalid CoreML .mlmodel save fallback by @amanharshx in #26298
• Fix extraction of .tgz dataset archives by @aswanth-07 in #26294
• Skip polygon resampling for semantic datasets when no augmentation reads the polygons by @raimbekovm in #26295
• Fix RT-DETR device moves, fused resume, empty images, bracket paths, odd plot grids and save=False uploads by @glenn-jocher in #26301

New Contributors

• @Vaishnavi220506 made their first contribution in #26285

Full Changelog: v8.4.160...v8.4.161