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0023272: Image comparison algorithm
A new class Image_Diff for comparison of images and a draw-command "diffimage", which compares 2 images. Image_PixMap redesigned to provide interface for low-level image operations. New Image_AlienPixMap class now intended for Save/Load functionality. Aspect_PixMap class dropped. Xw_PixMap and WNT_PixMap classes now do not inherit from Aspect_PixMap and deprecated. ToPixMap methods now retrieve Image_PixMap as argument. Conflicts: src/ViewerTest/ViewerTest.cxx Remarks applied Fix compilation (correct merging error) Eliminated Aspect <-> Image cyclic dependency Fixed GIF dump in case of BGR32 image format
This commit is contained in:
kgv
516
src/Image/Image_AlienPixMap.cxx
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516
src/Image/Image_AlienPixMap.cxx
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// Created on: 2010-09-16
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// Created by: KGV
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// Copyright (c) 2010-2012 OPEN CASCADE SAS
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//
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// The content of this file is subject to the Open CASCADE Technology Public
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// License Version 6.5 (the "License"). You may not use the content of this file
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// except in compliance with the License. Please obtain a copy of the License
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// at http://www.opencascade.org and read it completely before using this file.
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//
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// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
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// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
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//
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// The Original Code and all software distributed under the License is
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// distributed on an "AS IS" basis, without warranty of any kind, and the
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// Initial Developer hereby disclaims all such warranties, including without
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// limitation, any warranties of merchantability, fitness for a particular
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// purpose or non-infringement. Please see the License for the specific terms
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// and conditions governing the rights and limitations under the License.
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#ifdef HAVE_FREEIMAGE
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#include <FreeImage.h>
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#ifdef _MSC_VER
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#pragma comment( lib, "FreeImage.lib" )
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#endif
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#endif
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#include <Image_AlienPixMap.hxx>
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#include <gp.hxx>
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#include <TCollection_AsciiString.hxx>
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#include <fstream>
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#ifdef HAVE_FREEIMAGE
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namespace
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{
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static Image_PixMap::ImgFormat convertFromFreeFormat (FREE_IMAGE_TYPE theFormatFI,
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FREE_IMAGE_COLOR_TYPE theColorTypeFI,
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unsigned theBitsPerPixel)
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{
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switch (theFormatFI)
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{
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case FIT_RGBF: return Image_PixMap::ImgRGBF;
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case FIT_RGBAF: return Image_PixMap::ImgRGBAF;
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case FIT_FLOAT: return Image_PixMap::ImgGrayF;
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case FIT_BITMAP:
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{
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switch (theColorTypeFI)
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{
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case FIC_MINISBLACK:
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{
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return Image_PixMap::ImgGray;
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}
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case FIC_RGB:
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{
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if (Image_PixMap::IsBigEndianHost())
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{
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return (theBitsPerPixel == 32) ? Image_PixMap::ImgRGB32 : Image_PixMap::ImgRGB;
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}
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else
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{
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return (theBitsPerPixel == 32) ? Image_PixMap::ImgBGR32 : Image_PixMap::ImgBGR;
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}
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}
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case FIC_RGBALPHA:
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{
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return Image_PixMap::IsBigEndianHost() ? Image_PixMap::ImgRGBA : Image_PixMap::ImgBGRA;
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}
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default:
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return Image_PixMap::ImgUNKNOWN;
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}
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}
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default:
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return Image_PixMap::ImgUNKNOWN;
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}
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}
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static FREE_IMAGE_TYPE convertToFreeFormat (Image_PixMap::ImgFormat theFormat)
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{
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switch (theFormat)
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{
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case Image_PixMap::ImgGrayF:
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return FIT_FLOAT;
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case Image_PixMap::ImgRGBAF:
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return FIT_RGBAF;
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case Image_PixMap::ImgRGBF:
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return FIT_RGBF;
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case Image_PixMap::ImgRGBA:
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case Image_PixMap::ImgBGRA:
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case Image_PixMap::ImgRGB32:
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case Image_PixMap::ImgBGR32:
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case Image_PixMap::ImgRGB:
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case Image_PixMap::ImgBGR:
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case Image_PixMap::ImgGray:
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return FIT_BITMAP;
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default:
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return FIT_UNKNOWN;
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}
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}
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};
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#endif
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IMPLEMENT_STANDARD_HANDLE (Image_AlienPixMap, Image_PixMap)
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IMPLEMENT_STANDARD_RTTIEXT(Image_AlienPixMap, Image_PixMap)
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// =======================================================================
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// function : Image_AlienPixMap
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// purpose :
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// =======================================================================
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Image_AlienPixMap::Image_AlienPixMap()
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: myLibImage (NULL)
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{
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SetTopDown (false);
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}
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// =======================================================================
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// function : ~Image_AlienPixMap
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// purpose :
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// =======================================================================
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Image_AlienPixMap::~Image_AlienPixMap()
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{
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Clear();
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}
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// =======================================================================
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// function : InitWrapper
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// purpose :
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// =======================================================================
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bool Image_AlienPixMap::InitWrapper (ImgFormat thePixelFormat,
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Standard_Byte* theDataPtr,
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const Standard_Size theSizeX,
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const Standard_Size theSizeY,
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const Standard_Size theSizeRowBytes)
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{
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Clear();
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return false;
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}
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// =======================================================================
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// function : InitTrash
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// purpose :
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// =======================================================================
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bool Image_AlienPixMap::InitTrash (ImgFormat thePixelFormat,
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const Standard_Size theSizeX,
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const Standard_Size theSizeY,
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const Standard_Size theSizeRowBytes)
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{
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Clear();
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#ifdef HAVE_FREEIMAGE
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FREE_IMAGE_TYPE aFormatFI = convertToFreeFormat (thePixelFormat);
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int aBitsPerPixel = (int )Image_PixMap::SizePixelBytes (thePixelFormat) * 8;
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if (aFormatFI == FIT_UNKNOWN)
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{
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aFormatFI = FIT_BITMAP;
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aBitsPerPixel = 24;
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}
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FIBITMAP* anImage = FreeImage_AllocateT (aFormatFI, (int )theSizeX, (int )theSizeY, aBitsPerPixel);
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Image_PixMap::ImgFormat aFormat = convertFromFreeFormat (FreeImage_GetImageType (anImage),
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FreeImage_GetColorType (anImage),
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FreeImage_GetBPP (anImage));
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if (thePixelFormat == Image_PixMap::ImgBGR32
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|| thePixelFormat == Image_PixMap::ImgRGB32)
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{
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//FreeImage_SetTransparent (anImage, FALSE);
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aFormat = (aFormat == Image_PixMap::ImgBGRA) ? Image_PixMap::ImgBGR32 : Image_PixMap::ImgRGB32;
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}
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Image_PixMap::InitWrapper (aFormat, FreeImage_GetBits (anImage),
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FreeImage_GetWidth (anImage), FreeImage_GetHeight (anImage), FreeImage_GetPitch (anImage));
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SetTopDown (false);
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// assign image after wrapper initialization (virtual Clear() called inside)
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myLibImage = anImage;
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return true;
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#else
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return Image_PixMap::InitTrash (thePixelFormat, theSizeX, theSizeY, theSizeRowBytes);
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#endif
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}
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// =======================================================================
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// function : Clear
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// purpose :
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// =======================================================================
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bool Image_AlienPixMap::InitCopy (const Image_PixMap& theCopy)
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{
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if (&theCopy == this)
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{
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// self-copying disallowed
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return false;
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}
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if (!InitTrash (theCopy.Format(), theCopy.SizeX(), theCopy.SizeY(), theCopy.SizeRowBytes()))
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{
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return false;
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}
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if (myImgFormat == theCopy.Format())
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{
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if (myData.mySizeRowBytes == theCopy.SizeRowBytes()
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&& myData.myTopToDown == theCopy.TopDownInc())
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{
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// copy with one call
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memcpy (myData.myDataPtr, theCopy.Data(), theCopy.SizeBytes());
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return true;
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}
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// copy row-by-row
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const Standard_Size aRowSizeBytes = (myData.mySizeRowBytes > theCopy.SizeRowBytes())
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? theCopy.SizeRowBytes() : myData.mySizeRowBytes;
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for (Standard_Size aRow = 0; aRow < myData.mySizeY; ++aRow)
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{
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memcpy (ChangeRow (aRow), theCopy.Row (aRow), aRowSizeBytes);
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}
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return true;
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}
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// pixel format conversion required
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Clear();
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return false;
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}
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// =======================================================================
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// function : Clear
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// purpose :
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// =======================================================================
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void Image_AlienPixMap::Clear (ImgFormat thePixelFormat)
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{
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Image_PixMap::Clear (thePixelFormat);
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#ifdef HAVE_FREEIMAGE
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if (myLibImage != NULL)
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{
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FreeImage_Unload (myLibImage);
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myLibImage = NULL;
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}
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#endif
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}
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// =======================================================================
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// function : Load
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// purpose :
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// =======================================================================
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bool Image_AlienPixMap::Load (const TCollection_AsciiString& theImagePath)
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{
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Clear();
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#ifdef HAVE_FREEIMAGE
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FREE_IMAGE_FORMAT aFIF = FreeImage_GetFileType (theImagePath.ToCString(), 0);
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if (aFIF == FIF_UNKNOWN)
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{
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// no signature? try to guess the file format from the file extension
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aFIF = FreeImage_GetFIFFromFilename (theImagePath.ToCString());
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}
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if ((aFIF == FIF_UNKNOWN) || !FreeImage_FIFSupportsReading (aFIF))
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{
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// unsupported image format
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return false;
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}
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int aLoadFlags = 0;
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if (aFIF == FIF_GIF)
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{
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// 'Play' the GIF to generate each frame (as 32bpp) instead of returning raw frame data when loading
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aLoadFlags = GIF_PLAYBACK;
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}
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else if (aFIF == FIF_ICO)
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{
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// convert to 32bpp and create an alpha channel from the AND-mask when loading
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aLoadFlags = ICO_MAKEALPHA;
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}
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FIBITMAP* anImage = FreeImage_Load (aFIF, theImagePath.ToCString(), aLoadFlags);
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if (anImage == NULL)
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{
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return false;
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}
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Image_PixMap::ImgFormat aFormat = convertFromFreeFormat (FreeImage_GetImageType (anImage),
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FreeImage_GetColorType (anImage),
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FreeImage_GetBPP (anImage));
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if (aFormat == Image_PixMap::ImgUNKNOWN)
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{
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//anImage = FreeImage_ConvertTo24Bits (anImage);
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return false;
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}
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Image_PixMap::InitWrapper (aFormat, FreeImage_GetBits (anImage),
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FreeImage_GetWidth (anImage), FreeImage_GetHeight (anImage), FreeImage_GetPitch (anImage));
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SetTopDown (false);
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// assign image after wrapper initialization (virtual Clear() called inside)
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myLibImage = anImage;
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return true;
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#else
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return false;
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#endif
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}
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// =======================================================================
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// function : savePPM
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// purpose :
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// =======================================================================
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bool Image_AlienPixMap::savePPM (const TCollection_AsciiString& theFileName) const
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{
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if (IsEmpty())
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{
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return false;
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}
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// Open file
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FILE* aFile = fopen (theFileName.ToCString(), "wb");
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if (aFile == NULL)
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{
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return false;
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}
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// Write header
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fprintf (aFile, "P6\n%d %d\n255\n", (int )SizeX(), (int )SizeY());
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fprintf (aFile, "# Image stored by OpenCASCADE framework in linear RGB colorspace\n");
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// Write pixel data
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Quantity_Color aColor;
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Quantity_Parameter aDummy;
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Standard_Byte aByte;
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for (Standard_Size aRow = 0; aRow < SizeY(); ++aRow)
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{
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for (Standard_Size aCol = 0; aCol < SizeY(); ++aCol)
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{
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// extremely SLOW but universal (implemented for all supported pixel formats)
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aColor = PixelColor (aCol, aRow, aDummy);
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aByte = Standard_Byte(aColor.Red() * 255.0); fwrite (&aByte, 1, 1, aFile);
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aByte = Standard_Byte(aColor.Green() * 255.0); fwrite (&aByte, 1, 1, aFile);
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aByte = Standard_Byte(aColor.Blue() * 255.0); fwrite (&aByte, 1, 1, aFile);
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}
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}
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// Close file
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fclose (aFile);
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return true;
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}
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// =======================================================================
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// function : Save
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// purpose :
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// =======================================================================
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bool Image_AlienPixMap::Save (const TCollection_AsciiString& theFileName)
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{
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#ifdef HAVE_FREEIMAGE
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if (myLibImage == NULL)
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{
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return false;
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}
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FREE_IMAGE_FORMAT anImageFormat = FreeImage_GetFIFFromFilename (theFileName.ToCString());
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if (anImageFormat == FIF_UNKNOWN)
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{
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std::cerr << "Image_PixMap, image format doesn't supported!\n";
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return false;
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}
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if (IsTopDown())
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{
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FreeImage_FlipVertical (myLibImage);
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SetTopDown (false);
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}
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// FreeImage doesn't provide flexible format convertion API
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// so we should perform multiple convertions in some cases!
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Standard_Boolean isCopied = Standard_False;
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FIBITMAP* anImageToDump = myLibImage;
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switch (anImageFormat)
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{
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case FIF_PNG:
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case FIF_BMP:
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{
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if (Format() == Image_PixMap::ImgBGR32
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|| Format() == Image_PixMap::ImgRGB32)
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{
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// stupid FreeImage treats reserved byte as alpha if some bytes not set to 0xFF
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Image_PixMapData<Image_ColorRGB32>& aData = Image_PixMap::EditData<Image_ColorRGB32>();
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for (Standard_Size aRow = 0; aRow < SizeY(); ++aRow)
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{
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for (Standard_Size aCol = 0; aCol < SizeX(); ++aCol)
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{
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aData.ChangeValue (aRow, aCol).a_() = 0xFF;
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}
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}
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}
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else if (FreeImage_GetImageType (myLibImage) != FIT_BITMAP)
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{
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anImageToDump = FreeImage_ConvertToType (myLibImage, FIT_BITMAP);
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}
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break;
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}
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case FIF_GIF:
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{
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FIBITMAP* aTmpBitmap = myLibImage;
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if (FreeImage_GetImageType (myLibImage) != FIT_BITMAP)
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{
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aTmpBitmap = FreeImage_ConvertToType (myLibImage, FIT_BITMAP);
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if (aTmpBitmap == NULL)
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{
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return false;
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}
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}
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if (FreeImage_GetBPP (aTmpBitmap) != 24)
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{
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FIBITMAP* aTmpBitmap24 = FreeImage_ConvertTo24Bits (aTmpBitmap);
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if (aTmpBitmap != myLibImage)
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{
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FreeImage_Unload (aTmpBitmap);
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}
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if (aTmpBitmap24 == NULL)
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{
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return false;
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}
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aTmpBitmap = aTmpBitmap24;
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}
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// need convertion to image with pallete (requires 24bit bitmap)
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anImageToDump = FreeImage_ColorQuantize (aTmpBitmap, FIQ_NNQUANT);
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if (aTmpBitmap != myLibImage)
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{
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FreeImage_Unload (aTmpBitmap);
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}
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break;
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}
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case FIF_EXR:
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{
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if (Format() == Image_PixMap::ImgGray)
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{
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anImageToDump = FreeImage_ConvertToType (myLibImage, FIT_FLOAT);
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}
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else if (Format() == Image_PixMap::ImgRGBA
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|| Format() == Image_PixMap::ImgBGRA)
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{
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anImageToDump = FreeImage_ConvertToType (myLibImage, FIT_RGBAF);
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}
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else
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{
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FREE_IMAGE_TYPE aImgTypeFI = FreeImage_GetImageType (myLibImage);
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if (aImgTypeFI != FIT_RGBF
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&& aImgTypeFI != FIT_RGBAF
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&& aImgTypeFI != FIT_FLOAT)
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{
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anImageToDump = FreeImage_ConvertToType (myLibImage, FIT_RGBF);
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}
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}
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break;
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}
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default:
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{
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if (FreeImage_GetImageType (myLibImage) != FIT_BITMAP)
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{
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anImageToDump = FreeImage_ConvertToType (myLibImage, FIT_BITMAP);
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||||
if (anImageToDump == NULL)
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{
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return false;
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}
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}
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if (FreeImage_GetBPP (anImageToDump) != 24)
|
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{
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FIBITMAP* aTmpBitmap24 = FreeImage_ConvertTo24Bits (anImageToDump);
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if (anImageToDump != myLibImage)
|
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{
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FreeImage_Unload (anImageToDump);
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}
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if (aTmpBitmap24 == NULL)
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||||
{
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return false;
|
||||
}
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||||
anImageToDump = aTmpBitmap24;
|
||||
}
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||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (anImageToDump == NULL)
|
||||
{
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||||
return false;
|
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}
|
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|
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bool isSaved = (FreeImage_Save (anImageFormat, anImageToDump, theFileName.ToCString()) != FALSE);
|
||||
if (anImageToDump != myLibImage)
|
||||
{
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FreeImage_Unload (anImageToDump);
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}
|
||||
return isSaved;
|
||||
#else
|
||||
const Standard_Integer aLen = theFileName.Length();
|
||||
if ((aLen >= 4) && (theFileName.Value (aLen - 3) == '.')
|
||||
&& TCollection_AsciiString::ISSIMILAR (theFileName.SubString (aLen - 2, aLen), "ppm"))
|
||||
{
|
||||
return savePPM (theFileName);
|
||||
}
|
||||
std::cerr << "Image_PixMap, no image library available! Image saved in PPM format.\n";
|
||||
return savePPM (theFileName);
|
||||
#endif
|
||||
}
|
||||
|
||||
// =======================================================================
|
||||
// function : AdjustGamma
|
||||
// purpose :
|
||||
// =======================================================================
|
||||
Standard_EXPORT bool Image_AlienPixMap::AdjustGamma (const Standard_Real theGammaCorr)
|
||||
{
|
||||
#ifdef HAVE_FREEIMAGE
|
||||
return FreeImage_AdjustGamma (myLibImage, theGammaCorr) != FALSE;
|
||||
#else
|
||||
return false;
|
||||
#endif
|
||||
}
|
||||
Reference in New Issue
Block a user