| --- |
| license: bsd-3-clause |
| library_name: libreyolo |
| pipeline_tag: object-detection |
| datasets: |
| - detection-datasets/coco |
| tags: |
| - object-detection |
| - fcos |
| - torchvision |
| - libreyolo |
| --- |
| |
| # LibreFCOSr50 |
|
|
| FCOS with a ResNet-50 FPN backbone, repackaged for LibreYOLO. |
|
|
| ```python |
| from libreyolo import LibreYOLO |
| |
| model = LibreYOLO("LibreFCOSr50.pt") |
| results = model.predict("image.jpg") |
| ``` |
|
|
| ## Source |
|
|
| Derived from [pytorch/vision](https://github.com/pytorch/vision) at commit |
| [`336d36e8db990a905498c73933e35231876e28bc`](https://github.com/pytorch/vision/commit/336d36e8db990a905498c73933e35231876e28bc). |
| Copyright (c) Soumith Chintala 2016 and torchvision contributors. The source |
| implementation is BSD-3-Clause. |
|
|
| Official checkpoint: [fcos_resnet50_fpn_coco-99b0c9b7.pth](https://download.pytorch.org/models/fcos_resnet50_fpn_coco-99b0c9b7.pth) |
| SHA-256: `99b0c9b7cfb1527d782db86b91d207f00547c792fb4103fc612b651d0a07b9e7` |
| Published COCO val2017 box mAP: 39.2. |
|
|
| ## Modifications |
|
|
| Checkpoint metadata was added for LibreYOLO's v1.0 schema. Learned tensors and |
| state-dict keys are unchanged. The native LibreYOLO graph loads all 319 |
| official state entries strictly and matches the pinned source at raw heads, |
| anchors, preprocessing, and final detections. See |
| `weights/convert_fcos_weights.py` in the |
| [LibreYOLO source repository](https://github.com/LibreYOLO/libreyolo). |
|
|
| ## Benchmarks |
|
|
| Independent accuracy and speed benchmarks: |
| [visionanalysis.org/model/fcos-r50](https://www.visionanalysis.org/model/fcos-r50) |
|
|
| ## License |
|
|
| The checkpoint publisher did not attach a separate per-object license file. |
| This mirror applies the releasing project's BSD-3-Clause license on an |
| **implied**, not publisher-confirmed, basis. Torchvision warns that pretrained |
| models may have their own licenses or terms derived from training data and |
| that users must determine whether they have permission for their use case. |
| COCO annotations are CC BY 4.0; source images retain their individual Flickr |
| terms. See [`LICENSE`](./LICENSE) and [`NOTICE`](./NOTICE). |
|
|
