add.cpp

来自「barcode readers [ from Image]」· C++ 代码 · 共 70 行

//
// Add
//   Adds two images. To be used to combine the outputs from two pipeline
//   stages in CLadder join function.
//
// Copyright (C) 2003, 2006 by Jon A. Webb (Contact via GMail; username is jonawebb)
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
// 
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
// 
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
//

#include "Add.h"

#include "Debug.h"
#include "GrayImageIter.h"
#include "GrayIndex.h"
#include "Image.h"
#include "ImageSize.h"
#include "Replicate.h"

#include <e32std.h>
#include <fbs.h>

using namespace Core;

namespace Algorithm
{

	EXPORT_C CAdd* CAdd::NewL()
	{	
		return new (ELeave) CAdd();	
	}

	CAdd::~CAdd()
	{
	}

	CAdd::CAdd()
	{
	}


	CImage CAdd::DoJoinL(CImage imgLeft, CImage imgRight)
	{
		imgLeft.LockLC();
		IGrayImageIter itLeft(imgLeft);
		IGrayImageIter itRight(imgRight);
		for (; !itLeft.End(); itLeft.NextRow(), itRight.NextRow()) {
			for (; !itLeft.REnd(); itLeft++, itRight++) {
				int result = int(itLeft()) + int(itRight());
				itLeft() = (unsigned char) Min(255, result);
			}
		}
		CleanupStack::PopAndDestroy(); // unlock bitmaps
		CDebug::ShowImage(imgLeft);
		return imgLeft;
	}
};