Mercurial > hgrepos > Python2 > PyMuPDF
diff mupdf-source/thirdparty/tesseract/src/lstm/generate_lut.py @ 2:b50eed0cc0ef upstream
ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
The directory name has changed: no version number in the expanded directory now.
| author | Franz Glasner <fzglas.hg@dom66.de> |
|---|---|
| date | Mon, 15 Sep 2025 11:43:07 +0200 |
| parents | |
| children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mupdf-source/thirdparty/tesseract/src/lstm/generate_lut.py Mon Sep 15 11:43:07 2025 +0200 @@ -0,0 +1,27 @@ +#!/usr/bin/env python3 + +# Create C/C++ code for two lookup tables. + +import math + +# kTableSize and kScaleFactor must match the values in functions.h. + +# Size of static tables. +kTableSize = 4096 +# Scale factor for float arg to int index. +kScaleFactor = 256.0 + +print("// Generated code with lookup tables (see generate_lut.py)") +print('#include "functions.h"') +print("namespace tesseract {") + +print("const TFloat TanhTable[] = {") +for i in range(kTableSize): + print(" %a," % math.tanh(i / kScaleFactor)) +print("};") + +print("const TFloat LogisticTable[] = {") +for i in range(kTableSize): + print(" %a," % (1 / (1 + math.exp(-i / kScaleFactor)))) +print("};") +print("} // namespace tesseract.")