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Finding Similiar Images

, 24 Sep 2002
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This article gives an overview of Content-Based Image Retrieval
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Content-Based Image Retrieval (CBIR) should be the right title for this article. 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, Hadamard transform coefficients to be used as engine in CBIR system. Retrieval by image content has received great attention in the last decades. Several techniques have been proposed to the problem of finding or indexing images based on their contents. Each method used has strong and weak points.

In this article I try to give an overview view about CBIR because this kind of topics is the most frequently asked question in Digital Image Processing. Here I used CxImage library from Davide Pizzolato ( The latest version of CxImage library contain a function to transform an image into it's frequency domain that is FFT2 function. The technique I used here is not really efficient but at least this article will guide you to more advanced CBIR.

If you want more efficient method try to follow this links and

Finding Similiar Images

There are 4 steps to perform image retrieval based on the similarity:

  1. Load Query Image (Image we want to search for or find images similar to this) 
  2. Generate Signature of Key Image using Fourier Transform 
  3. For every images in the database Load and generate the signature 
  4. Calculate Euclidean Distance for Key Image Signature and Database Image Signature 
  5. Put the value in a auto-sorted listbox to make similarity investigation easier because smallest value stay in the top of the list and step down for similar images.

The image similarity depend on Euclidean Distance. The smaller the distance the image will get more similar. In measuring similarity, there are few famous math formulas such as Dice similarity coefficients, Jackard, Otsuka, Simpson, Manhattan, Robinson, and more.

The libraries used:

  1. CxImage (
  2. CTokenEx Written by Daniel Madden (
  3. CDirDialog (I forgot the creator)


This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here


About the Author

Danang Suharno Ngadinegaran
Web Developer
Indonesia Indonesia
No Biography provided

Comments and Discussions

QuestionThe code can not be compiled , There l cannot find ximage.h and any lib files. should I download these files ? 3x PinmemberMember 443190029-Dec-13 16:37 
AnswerRe: The code can not be compiled , There l cannot find ximage.h and any lib files. should I download these files ? 3x PinmemberMember 1083152320-May-14 3:08 
Questioncompile PinmemberSu-Jin Oh21-Feb-13 19:33 
QuestionPlease remember PinmembereRRaTuM22-Nov-11 1:29 
GeneralMy vote of 1 PinmembereRRaTuM22-Nov-11 1:26 
Generalcbir using color histogram MATLAB code Pinmemberwanlovewan18-Oct-10 13:10 
Questioncannot upload images Pinmembervarshanth28-Jan-10 21:29 
Generalto display images in matlab guide frame or listbox Pinmemberanjan kumar sahoo1-Dec-09 18:35 
Generalupdate from cimage.lib Pinmemberxpjandy29-Oct-09 18:01 
QuestionHow to use this in RGB color space? Pinmemberczwarty20-Oct-09 9:02 
GeneralI have the same problem is “unresolved external symbol "public: bool __thiscall CxImage::Load(unsigned short const *,unsigned long)" (?Load@CxImage@@QAE_NPBGK@Z)” Pinmemberliuyang_bnu11-May-09 22:26 
RantPost an .exe-file Pinmemberandycpp3-May-09 9:38 
GeneralLinks not found: PLS help PinmemberMember 432247112-Mar-09 1:53 
Generalsame code in matlab Pinmemberpradyuvishal10-Mar-09 6:10 
GeneralRe: same code in matlab PinmemberGAURAV JASWAL7-Dec-09 23:58 
Generalmatlab Pinmembermaryam2222-Feb-09 9:36 
GeneralCBIR Pinmembereipro22-Dec-08 4:19 
GeneralRe: CBIR PinmemberMember 114112016-Mar-15 0:23 
QuestionCan I find the same system in Matlab Pinmemberahmedabdu15-Dec-08 18:40 
Generali have build it successfully Pinmemberahlawat.arun@gmail.com13-Nov-08 20:45 
GeneralRe: i have build it successfully Pinmemberadamdcg3-Dec-08 22:58 
GeneralRe: i have build it successfully Pinmemberadamdcg4-Dec-08 0:00 
GeneralRe: i have build it successfully Pinmembercnbjliuaihua1-Jun-12 4:00 
GeneralRe: i have build it successfully Pinmembercnbjliuaihua1-Jun-12 18:10 
GeneralRe: i have build it successfully Pinmemberjoprem8-Mar-12 0:58 

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