mirror of https://github.com/status-im/qzxing.git
69 lines
2.3 KiB
C++
69 lines
2.3 KiB
C++
// -*- mode:c++; tab-width:2; indent-tabs-mode:nil; c-basic-offset:2 -*-
|
|
#ifndef __HYBRIDBINARIZER_H__
|
|
#define __HYBRIDBINARIZER_H__
|
|
/*
|
|
* HybridBinarizer.h
|
|
* zxing
|
|
*
|
|
* Copyright 2010 ZXing authors All rights reserved.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include <vector>
|
|
#include <zxing/Binarizer.h>
|
|
#include <zxing/common/GlobalHistogramBinarizer.h>
|
|
#include <zxing/common/BitArray.h>
|
|
#include <zxing/common/BitMatrix.h>
|
|
|
|
namespace zxing {
|
|
|
|
class HybridBinarizer : public GlobalHistogramBinarizer {
|
|
private:
|
|
Ref<BitMatrix> matrix_;
|
|
Ref<BitArray> cached_row_;
|
|
int cached_row_num_;
|
|
|
|
public:
|
|
HybridBinarizer(Ref<LuminanceSource> source);
|
|
virtual ~HybridBinarizer();
|
|
|
|
virtual Ref<BitMatrix> getBlackMatrix();
|
|
Ref<Binarizer> createBinarizer(Ref<LuminanceSource> source);
|
|
private:
|
|
// We'll be using one-D arrays because C++ can't dynamically allocate 2D
|
|
// arrays
|
|
int* calculateBlackPoints(unsigned char* luminances,
|
|
int subWidth,
|
|
int subHeight,
|
|
int width,
|
|
int height);
|
|
void calculateThresholdForBlock(unsigned char* luminances,
|
|
int subWidth,
|
|
int subHeight,
|
|
int width,
|
|
int height,
|
|
int blackPoints[],
|
|
Ref<BitMatrix> const& matrix);
|
|
void threshold8x8Block(unsigned char* luminances,
|
|
int xoffset,
|
|
int yoffset,
|
|
int threshold,
|
|
int stride,
|
|
Ref<BitMatrix> const& matrix);
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|