[Opencv application notes] (color/grayscale) the pixel values of the image are read and saved to the TXT file.

[Opencv application notes] (color/grayscale) the pixel values of the image are read and saved to the TXT file.

Skyseraph Feb 23rd 2012 sztcl

Email: zgzhaobo@gmail.com QQ: 452728574

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I. wordy:

A hardware expert wants to test the CCD communication between FPGA and PC. He needs to use image data to find the "image processing master" in my former "xiaoao" lab and entrust me to write a small test.ProgramSave the TXT file of the specified image (color/gray) conversion process to the PC. Ta only needs the EXE file,CodeYou don't need this kind of stuff... why? I wrote a script and tested it. OK. For details, see... O (success _ success) O.

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Ii. Source Code

1 Color Image

① Input: A colored image rgb.bmp

② Output:The three TXT files under the D drive are respectively r.txt0000g.txt0000b.txt

③ Source code:

View code

 1   /*  ========================================================== ========== //
 2   Function: Read and save RGB data.
  3   Time: 02/23/2012 skyseraph
  4   // ================================================ ==========  */ 
 5 # Include "  Iostream  " 
 6 # Include <fstream>
 7   Using  Namespace STD;
 8  
 9 # Include "  Cv. h  " 
 10 # Include "  Highgui. h  " 
 11  
 12   # Pragma Comment (Lib, "highgui. lib ")
 13  # Pragma Comment (Lib, "cv. lib ")
 14   # Pragma Comment (Lib, "cvaux. lib ")
 15   # Pragma Comment (Lib, "cxcore. lib ")
 16  
 17   Int Main ( Int Argc, Char * Argv [])
 18 {
 19      /*  ①
  20   Iplimage * IMG = cvloadimage ("rgb.bmp",-1 );
  21   If (IMG = NULL)
  22   Return 0;
  23   Cvscalar P;
  24   Ofstream OUTFILE ("D: \ rgb.txt ");
  25   OUTFILE <"image width and height:"  width <"*"  height <Endl;
 26   For (INT I = 0; I  height; I ++)
  27   {
  28   For (Int J = 0; j  width; j ++)
  29   {
  30   P = cvget2d (IMG, I, j );
  31   OUTFILE <p. val [0] <"<p. val [1] <"<p. val [2] <"<Endl;
  32  }
  33   }
  34   */ 
 35   ///  * ②  
  36 Iplimage * IMG = cvloadimage ( "  Rgb.bmp  " ,- 1 );
 37 Cvscalar P;
38 Ofstream outfile1 ( "  D: \ B .txt  " );
 39 Ofstream outfile2 ( "  D: \ g.txt  " );
 40 Ofstream outfile3 ( "  D: \ r.txt  " );
 41 Outfile1 <"  Image width and height:  "  width < "  *  "  height <Endl;
 42 Outfile1 < "  Image B value  " <Endl;
 43 Outfile2 < "  Image width and height:  "  width < "  *  "  height <Endl;
 44 Outfile2 < "  Image G value  " <Endl;
 45 Outfile3 < "  Image width and height:  "  width < "  * "  height <Endl;
 46 Outfile3 < "  Image R Value  " <Endl;
 47       //  Cvflip (IMG );  
  48       For ( Int I = 0 ; I  width; I ++)
 49 {
 50           For ( Int J = 0 ; J  height; j ++)
 51 {
 52 P = cvget2d (IMG, I, j ); //  (J, I)  
  53 Outfile1 <p. Val [ 0 ] < "   " ;
 54 Outfile2 <p. Val [ 1 ] < "   " ;
 55 Outfile3 <p. Val [ 2 ] < "   " ;
 56 }
 57 Outfile1 <Endl;
 58 Outfile2 <Endl;
59 Outfile3 <Endl;
 60 } //  */  
  61  
 62       Return   0 ;
 63 }

④ EXE file: rgb.zip

2. Grayscale Images

① Input:Grayscale image gray.jpg

② Output:Gray.txt

③ Source code:

View code

 1   /*  ========================================================== ========== //
  2  Function: Gray reads and saves data.
  3   Time: 02/23/2012 skyseraph
  4   // ================================================ ==========  */ 
 5 # Include "  Iostream  " 
 6 # Include <fstream>
 7   Using   Namespace STD;
 8  
 9 # Include "  Cv. h  " 
 10 # Include "  Highgui. h  " 
 11  
 12   # Pragma Comment (Lib, "highgui. lib ")
 13   # Pragma Comment (Lib, "cv. lib ")
 14   # Pragma Comment (Lib, "cvaux. lib ")
 15   # Pragma Comment (Lib, "cxcore. lib ")
 16  
 17  
 18   Int Main ( Int Argc, Char * Argv [])
 19 {
 20 Iplimage * IMG = cvloadimage ("  Gray.jpg  " , 0 );
 21 Cvscalar P;
 22 Ofstream outfile1 ( "  D: \ gray.txt  " );
 23 Outfile1 < "  Image width and height:  "  width <"  *  "  height <Endl;
 24 Outfile1 < "  Image pixel value  " <Endl;
 25       //  Cvflip (IMG );  
  26       For ( Int I = 0 ; I  width; I ++)
 27 {
 28           For ( Int J = 0 ; J  height; j ++)
 29 {
 30 P = cvget2d (IMG, I, j ); //  (J, I)  
  31 Outfile1 <p. Val [ 0 ] <"   " ;
 32 }
 33 Outfile1 <Endl;
 34 } //  */  
  35  
 36       Return   0 ;
 37 }

④ EXE file: gray.zip

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Iii. Effect

Color as an example, source Image

R.txt (Part): gray.zip

Others are similar...

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