GamutPhoto/gamut-models

Gamut — mask models

The on-device models behind Gamut's subject, sky and depth masks, kept here so every copy of Gamut downloads exactly the same, checksum-verified files. Gamut downloads a model only when someone chooses to use masks, and never sends a photograph anywhere: all of this runs on the person's own computer.

These are unmodified copies of the files named below. Each keeps its own licence and its authors' credit; nothing here is relicensed.

File	What it does in Gamut	Model and authors	Copied from	Licence
birefnet_lite.onnx	Finds the subject	BiRefNet (lite), Peng Zheng et al.	onnx-community/BiRefNet_lite-ONNX (onnx/model.onnx), an ONNX conversion of ZhengPeng7/BiRefNet_lite	MIT — LICENSE-BiRefNet.txt
sam2.1_hiera_tiny_encoder.onnx, sam2.1_hiera_tiny_decoder.onnx	Picks out the subject someone points at	Segment Anything 2.1 (Hiera tiny), Meta	vietanhdev/segment-anything-2.1-onnx-models (sam2.1_hiera_tiny_20260221.zip), exported with samexporter by Viet-Anh Nguyen	Apache-2.0 — LICENSE-Apache-2.0.txt
depth_anything_v2_small.onnx	Near and far	Depth Anything V2 Small, Lihe Yang et al.	onnx-community/depth-anything-v2-small (onnx/model.onnx)	Apache-2.0 — LICENSE-Apache-2.0.txt. Only the Small model is Apache-2.0; the Base, Large and Giant models are CC-BY-NC-4.0 and are not used.
skyseg.onnx	Finds the sky	Sky segmentation by xiongzhu666 (U²-Net architecture, Qin et al.)	JianyuanWang/skyseg, from xiongzhu666/Sky-Segmentation-and-Post-processing	MIT — LICENSE-skyseg.txt

Papers

• Zheng et al., Bilateral Reference for High-Resolution Dichotomous Image Segmentation, CAAI AIR 2024.
• Ravi et al., SAM 2: Segment Anything in Images and Videos, ICLR 2025.
• Yang et al., Depth Anything V2, NeurIPS 2024.
• Qin et al., U²-Net: Going Deeper with Nested U-Structure for Salient Object Detection, Pattern Recognition 2020.