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LICENSE

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+This repository aggregates files under different licences. Each file keeps the
+licence of the model it was converted from.
+
+  detector-fp16.onnx              Apache-2.0
+    from ogkalu/comic-text-and-bubble-detector
+
+  comic-text-detector-fp16.onnx   GPL-3.0
+    from mayocream/comic-text-detector-onnx
+
+  aot-fp16.onnx                   GPL-3.0
+    from lemondouble/lemon-manga-translator
+
+The GPL-3.0 files are aggregated with, not combined into, the Apache-2.0 file.
+Full licence texts:
+  Apache-2.0  https://www.apache.org/licenses/LICENSE-2.0
+  GPL-3.0     https://www.gnu.org/licenses/gpl-3.0.txt

README.md

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+---
+license: other
+license_name: per-file
+license_link: LICENSE
+tags:
+  - onnx
+  - manga
+  - webgpu
+---
+
+# Comic text ONNX models, half precision
+
+Float16 conversions of three ONNX models for manga and comic text
+processing, aimed at onnxruntime-web on the WebGPU execution provider. The weights are unchanged
+apart from the precision cast; no retraining, pruning, or architecture edit.
+
+These exist because WebGPU rewards half precision and, in one case, punishes
+integer quantisation badly.
+
+## Files
+
+| file | converted from | licence |
+|---|---|---|
+| `detector-fp16.onnx` | [ogkalu/comic-text-and-bubble-detector](https://huggingface.co/ogkalu/comic-text-and-bubble-detector) `detector.onnx` | Apache-2.0 |
+| `comic-text-detector-fp16.onnx` | [mayocream/comic-text-detector-onnx](https://huggingface.co/mayocream/comic-text-detector-onnx) `comic-text-detector.onnx` | GPL-3.0 |
+| `aot-fp16.onnx` | [lemondouble/lemon-manga-translator](https://huggingface.co/lemondouble/lemon-manga-translator) `onnx/aot-inpainting/aot_folded.onnx` | GPL-3.0 |
+
+Each file keeps the licence of the model it was converted from. They are
+distributed together as an aggregate, which GPL-3.0 section 5 permits; the
+GPL-3.0 files are not combined with the Apache-2.0 one.
+
+## Measured
+
+Chrome, Apple M3, onnxruntime-web on WebGPU, median of repeated runs at the
+input size these are run at. "Shipping" is the artifact each was converted from,
+except for detection, where it is the int8 build that was in use before.
+
+| model | shipping | this file | agreement with float32 |
+|---|---|---|---|
+| detector | 1610 ms (int8) | **140 ms** | same 10 regions on a real page, worst box IoU 0.969 |
+| comic-text-detector | 468 ms | **290 ms** | 0.006% of mask pixels land on the other side of the threshold |
+| aot | 310 ms | **237 ms** | mean absolute difference 0.6/255, worst 15/255 |
+
+The detector number is not a half precision result so much as an integer one.
+WebGPU has no kernels for `ConvInteger` or `MatMulInteger`, so every quantised
+node in the int8 build crosses back to the CPU. Its float32 build already runs
+in 188 ms; half precision takes it to 140 ms.
+
+A LaMa conversion is deliberately absent. It overflows in the fast Fourier
+convolution branch and returns NaN, for a 16% gain that would not have been
+worth it anyway.
+
+## How they were made
+
+`onnxconverter-common`'s `convert_float_to_float16` with `keep_io_types=True`,
+followed by a repair pass. The converter retypes tensors but leaves each `Cast`
+node's `to` attribute on the original dtype, so the graph declares float32 where
+it now produces float16 and the session refuses to build. Setting `to` from the
+inferred output type fixes 5 casts in the detector and 10 in AOT.
+
+Inputs and outputs stay float32, so these are drop-in replacements: no caller
+change beyond the file name.

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