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FriendFeedFinding Similarity Between Images
Click here for a larger image.
Environment: MFC
Content-Based Image Retrieval (CBIR) is a way to index or find a similarity between images in a multimedia database. There are methods such as Fourier Transform, Hough Transform, Wavelet Transform, Gabor Transform, and Hadamard transform coefficients to be used as the engine in the CBIR system. Retrieval by image content has received great attention in the last decades. Several techniques have been proposed to solve the problem of finding or indexing images based on their contents. Each method used have strong and weak points.
In this article, I try to give a sight view about CBIR because this kind of topic is the most frequently asked question in Digital Image Processing. Here I used the CxImage library from Davide Pizzolato. The latest version of CxImage library contains a function to transform an image into its frequency domain; that is, the FFT2() function. The technique I used here is not really efficient, but at least will be a guide for you to learn more advanced CBIR. If you want more efficient method try to follow this link:
http://debut.cis.nctu.edu.tw/pages/slides/jeffrey/present2.pdf.
There are four steps to performing image retrieval based on their similarity:
- Load Query Image (the image we want to search for or find images similar to this).
- Generate Signature of Key Image using Fourier Transform.
- For every image in the database, load and generate the signature.
- Calculate Euclidean Distance for Key Image Signature and Database Image Signature.
- Put the value in an auto-sorted listbox to make similarity investigation easier because the smallest value stays in the top of the list and steps down for similar images.
The image similarity depends on Euclidean Distance. The smaller the distance, the more similiar the image. In measuring similarity, there are few famous math formulas such as Dice similarity coefficients, Jackard, Otsuka, Simpson, Manhattan, Robinson, and more.
The libraries used are:
- CxImage (http://www.aoi.it)
- CTokenEx, written by Daniel Madden (daniel.madden@compaq.com)
- CDirDialog (I forgot the creator)
That's all there is to it!
Danang Suharno
Ngadinegaran MJ 3/156
Yogyakarta 55143
Indonesia
http://www.geocities.com/kinclong2
Comments
to support space " " in file path
Posted by jauming on 09/03/2007 05:43amvoid CNggolekiGinambaranDlg::OnSelchangeListFounded() { CString strTemp1; CString strTemp2; CStringArray strArr; CTokenEx t; m_ListFound.GetText(m_ListFound.GetCurSel(), strTemp1); //:20070903: support space " " in file path t.Split(strTemp1, " - ", strArr); m_imgFound.Load(strArr[1], CXIMAGE_FORMAT_JPG); RefreshDisplay(); }Replycomparing two RGB values of two BMP files
Posted by biresh on 09/20/2006 01:12amI want to know, how i can compare the RGB values of two BMP file to solve the problem of jigsaw puzzle and to find out is there any similarity between the images are exist or not.
ReplyCannot open include file: 'ximage.h'
Posted by h.tarik on 04/08/2004 04:47amwhen i build this program, the error above occured.please help me to run it.thanks in advance.
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Replyfor the help
Posted by kiwamu on 12/26/2006 01:52amgo: http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=382886&SiteID=1 for the help
ReplyCannot open include file: 'ximage.h'
Posted by h.tarik on 04/07/2004 02:26pmwhen i build this program, the error above occured.please help me to run it.thanks in advance.
Replyfatal error LNK1104: cannot open file "j2000.lib"
Posted by Legacy on 02/17/2004 12:00amOriginally posted by: hatim
When I compile this program,the error above occurs.
ReplyHow can I resolve this problem?
Thank for your help
comment
Posted by Legacy on 01/09/2004 12:00amOriginally posted by: S.Karthikeyan
Replyjpeglib.h !! ?
Posted by Legacy on 12/11/2003 12:00amOriginally posted by: djouak
when i compile a code , i have a problem with this file, the code can't find "jpeglib.h" ?!!!
can you help me ?
Replythank's
Hla iki cah Jogja toh tibake, hebat salut Dab!
Posted by Legacy on 10/22/2003 12:00amOriginally posted by: Firdaus Effendy
Lha iyo, wong aku pas goleki artikel Bitmap Comparison, kok nemu artikel panjenengan kie. Suwun lho mas. Pisan maneh, sampeyan hebat.
Replysame function written in c#?
Posted by Legacy on 09/11/2003 12:00amOriginally posted by: Oliver
hi,
i'm coding in c# and looking for libraries or tools in c#, because i have difficulties to link the CXImage library to my projects. The VisualStudio IDE doesn't accept the above mentioned libraries.
thanks Oliver
ReplyVery nice program...
Posted by Legacy on 05/29/2003 12:00amOriginally posted by: Bo Kohut
I am working to translate it from the native language to english. I also optimized the compile for P3 on my machine... what a cpu hog this program is but it is very good for what it says it does!
ReplyLoading, Please Wait ...