/*
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* Copyright 2012 ZXing authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#import "ZXBinarizer.h"
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@class ZXBitArray, ZXBitMatrix, ZXLuminanceSource;
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/**
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* This Binarizer implementation uses the old ZXing global histogram approach. It is suitable
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* for low-end mobile devices which don't have enough CPU or memory to use a local thresholding
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* algorithm. However, because it picks a global black point, it cannot handle difficult shadows
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* and gradients.
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*
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* Faster mobile devices and all desktop applications should probably use ZXHybridBinarizer instead.
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*/
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@interface ZXGlobalHistogramBinarizer : ZXBinarizer
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// Applies simple sharpening to the row data to improve performance of the 1D Readers.
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- (ZXBitArray *)blackRow:(int)y row:(ZXBitArray *)row error:(NSError **)error;
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// Does not sharpen the data, as this call is intended to only be used by 2D Readers.
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- (ZXBinarizer *)createBinarizer:(ZXLuminanceSource *)source;
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@end
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