/ocr/ocrservice/jni/hydrogen/src/thresholder.h

http://eyes-free.googlecode.com/ · C Header · 36 lines · 12 code · 9 blank · 15 comment · 0 complexity · 4c38b1e33f2d13b32afd3c9ac6cf3794 MD5 · raw file

  1. /*
  2. * Copyright 2010, Google Inc.
  3. *
  4. * Licensed under the Apache License, Version 2.0 (the "License");
  5. * you may not use this file except in compliance with the License.
  6. * You may obtain a copy of the License at
  7. *
  8. * http://www.apache.org/licenses/LICENSE-2.0
  9. *
  10. * Unless required by applicable law or agreed to in writing, software
  11. * distributed under the License is distributed on an "AS IS" BASIS,
  12. * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13. * See the License for the specific language governing permissions and
  14. * limitations under the License.
  15. */
  16. #ifndef HYDROGEN_THRESHOLDER_H_
  17. #define HYDROGEN_THRESHOLDER_H_
  18. #include "leptonica.h"
  19. l_int32 pixGetFisherThresh(PIX *pixs, l_float32 scorefract, l_float32 *pfdr, l_int32 *pthresh);
  20. l_int32 pixFisherAdaptiveThreshold(PIX *pixs, PIX **ppixd, l_int32 tile_x, l_int32 tile_y,
  21. l_float32 score_fract, l_float32 thresh);
  22. PIX *pixThreshedSobelEdgeFilter(PIX *pixs, l_int32 threshold);
  23. l_uint8 pixGradientEnergy(PIX *pixs, PIX *mask, l_float32 *pdensity);
  24. l_uint8 pixEdgeMax(PIX *pixs, l_int32 *pmax, l_int32 *pavg);
  25. l_uint8 pixEdgeAdaptiveThreshold(PIX *pixs, PIX **ppixd, l_int32 tile_x, l_int32 tile_y,
  26. l_int32 thresh, l_int32 avg_thresh);
  27. #endif /* HYDROGEN_THRESHOLDER_H_ */