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# include/cinder/ip/Threshold.h

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    00001 /*
    00002  Copyright (c) 2010, The Barbarian Group
    00003  All rights reserved.
    00004
    00005  Redistribution and use in source and binary forms, with or without modification, are permitted provided that
    00006  the following conditions are met:
    00007
    00008     * Redistributions of source code must retain the above copyright notice, this list of conditions and
    00009     the following disclaimer.
    00010     * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and
    00011     the following disclaimer in the documentation and/or other materials provided with the distribution.
    00012
    00013  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
    00014  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
    00015  PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
    00016  ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
    00017  TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
    00018  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
    00019  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    00020  POSSIBILITY OF SUCH DAMAGE.
    00021 */
    00022
    00023 #pragma once
    00024
    00025 #include "cinder/Cinder.h"
    00026 #include "cinder/Surface.h"
    00027
    00028 namespace cinder { namespace ip {
    00029
    00031 template<typename T>
    00032 void threshold( SurfaceT<T> *surface, T value, const Area &area );
    00034 template<typename T>
    00035 void threshold( SurfaceT<T> *surface, T value );
    00037 template<typename T>
    00038 void threshold( const SurfaceT<T> &srcSurface, T value, SurfaceT<T> *dstSurface );
    00040 template<typename T>
    00041 void threshold( const ChannelT<T> &srcSurface, T value, ChannelT<T> *dstSurface );
    00043
    00044 template<typename T>
    00045 void adaptiveThreshold( const ChannelT<T> &srcChannel, int32_t windowSize, float percentageDelta, ChannelT<T> *dstChannel );
    00047
    00048 template<typename T>
    00049 void adaptiveThreshold( ChannelT<T> *channel, int32_t windowSize, float percentageDelta );
    00051
    00052 template<typename T>
    00053 void adaptiveThresholdZero( ChannelT<T> *channel, int32_t windowSize );
    00054
    00055 template<typename T>
    00056 void adaptiveThresholdZero( const ChannelT<T> &srcChannel, int32_t windowSize, ChannelT<T> *dstChannel );
    00057
    00058 template<typename T>
    00059 class AdaptiveThresholdT {
    00060  private:
    00061     typedef typename CHANTRAIT<T>::Accum SUMT;
    00062     struct Obj {
    00063         Obj( ChannelT<T> *channel );
    00064         ~Obj();
    00065
    00066         ChannelT<T> * mChannel;
    00067         int32_t     mImageWidth;
    00068         int32_t     mImageHeight;
    00069         int8_t      mIncrement;
    00070         SUMT        * mIntegralImage;
    00071     };
    00072  public:
    00073     AdaptiveThresholdT() {};
    00074     AdaptiveThresholdT( ChannelT<T> *channel );
    00075     void calculate( int32_t windowSize, float percentageDelta, ChannelT<T> *dstChannel );
    00076
    00078
    00079     AdaptiveThresholdT( const AdaptiveThresholdT &other ) { mObj = other.mObj; }
    00080     AdaptiveThresholdT& operator=( const AdaptiveThresholdT &other ) { mObj = other.mObj; return *this; }
    00081     bool operator==( const AdaptiveThresholdT &other ) { return mObj == other.mObj; }
    00082     typedef typename shared_ptr<Obj>::unspecified_bool_type unspecified_bool_type;
    00083     operator unspecified_bool_type() const { return static_cast<typename shared_ptr<Obj>::unspecified_bool_type>( mObj ); }
    00084     void reset() { mObj.reset(); }
    00086  private:
    00087     shared_ptr<Obj>     mObj;
    00088 };
    00089
    00090 typedef AdaptiveThresholdT<uint8_t>     AdaptiveThreshold;
    00091 typedef AdaptiveThresholdT<uint8_t>     AdaptiveThreshold8u;
    00092 typedef AdaptiveThresholdT<float>       AdaptiveThreshold32f;
    00093
    00094 } } // namespace cinder::ip