| --- |
| license: creativeml-openrail-m |
| tags: |
| - stable-diffusion |
| - stable-diffusion-v1-5 |
| - inpainting |
| - npuforge |
| base_model: |
| - stable-diffusion-v1-5/stable-diffusion-v1-5 |
| - stable-diffusion-v1-5/stable-diffusion-inpainting |
| --- |
| |
| # SD 1.5 inpainting difference (for npuforge) |
|
|
| One file, `sd15inp_diff_f16.safetensors`, that turns an ordinary 4-channel SD 1.5 |
| checkpoint into a 9-channel inpainting model ("add difference"). It is used by |
| [npuforge](https://github.com/AbrahamPaulJ/npuforge) on Android to convert SD 1.5 |
| checkpoints into inpainting models for Qualcomm NPUs. |
|
|
| ## What it contains |
|
|
| For every UNet tensor (`model.diffusion_model.*`, 686 tensors, 859,535,364 values): |
|
|
| ``` |
| diff = sd-v1-5-inpainting − v1-5-pruned-emaonly (computed in float32, stored as float16) |
| ``` |
|
|
| `input_blocks.0.0.weight` (`conv_in`) is 9 channels wide in the inpainting model and 4 |
| in the base. Channels 0–3 hold `inpainting − base`; channels 4–8 hold the inpainting |
| model's own mask / masked-image weights. Applying it is therefore always: |
|
|
| ``` |
| inpaint_unet = zero_pad_input_channels(custom_unet) + diff |
| ``` |
|
|
| Text encoder and VAE are not included; the custom checkpoint keeps its own. |
|
|
| | | | |
| |---|---| |
| | File size | 1,719,165,856 bytes | |
| | SHA-256 | `9f08e2684fc2c6261e705e28ff437fd0fae569b1dcf62336afef5994beb6d487` | |
| | Largest float16 rounding error | 0.000394 (max \|diff\| 1.427) | |
| | Sources | `stable-diffusion-v1-5/stable-diffusion-inpainting` `sd-v1-5-inpainting.ckpt`; `stable-diffusion-v1-5/stable-diffusion-v1-5` `v1-5-pruned-emaonly.safetensors` | |
|
|
| ## Scope of testing |
|
|
| Measured on one phone (Snapdragon 8 Elite) through npuforge's inpaint template: |
| DreamShaper 8 and AbsoluteReality 1.6525 with this difference applied produced |
| correct, cleanly blended inpaints on a five-prompt fixture, and float16 storage matched |
| float32 storage within ordinary build-to-build variation. Checkpoints far from base |
| SD 1.5 are untested. |
|
|
| ## License |
|
|
| Derived from Stable Diffusion v1.5 and Stable Diffusion Inpainting and distributed |
| under the same CreativeML OpenRAIL-M license, including its use-based restrictions |
| (Attachment A of the license). You are responsible for how you use models produced with it. |
|
|
