AppsFry detail-preservation background engine, v2-birefnet-lite1

Model: BiRefNet general-lite, Swin-v1-tiny backbone, epoch 232.
Original source: https://github.com/ZhengPeng7/BiRefNet/tree/97e4f35d74043427b0e9ba935ca10991853a36bc
Original weights: https://github.com/ZhengPeng7/BiRefNet/releases/download/v1/BiRefNet-general-bb_swin_v1_tiny-epoch_232.pth
Original weights SHA-256: 6a1e050c6ec2697e5ed268455df544782b023acf8643ab771250979094875ab1

The trained weights are unchanged. AppsFry exports a fixed 768x768 inference
network and expresses deformable convolution as bilinear GridSample terms plus
convolutions to avoid the original ONNX export's large GatherND temporaries.
Full-resolution source RGB and dimensions are retained separately during export.
Conversion source, environment and validation details:
https://github.com/subhendu09/appsfry/blob/main/scripts/export-background-detail.py
https://github.com/subhendu09/appsfry/blob/main/docs/background-removal-2026-10-20.md

BiRefNet and its weights: MIT license, Zheng Peng et al.
MIT License

Copyright (c) 2024 ZhengPeng

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

ONNX Runtime Web 1.17.3: MIT license.
MIT License

Copyright (c) Microsoft Corporation

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.


The existing IMG.LY/ISNet fallback and AppsFry image-tools integration have
separate AGPL-3.0-or-later notices:
../v1.4.5-hq1/NOTICES.txt
https://github.com/subhendu09/appsfry/blob/main/licenses/IMAGE-TOOLS-NOTICE.md