Comments on: Color recognition using openCV

By: Dhruva Verma

Dhruva Verma — Tue, 11 Oct 2011 19:36:30 +0000

Got it sir..

By: Dhruva Verma

Dhruva Verma — Mon, 10 Oct 2011 21:32:33 +0000

Hello sir,
I have been working on analysing time for color detection from video or real time.For this i am detecting colors from the motion of a person in video and synchronising the movements of graphical robot in opengl with this.
Problem i am getting is when i call color detection and than making of robot in main(), than it stops after taking one frame because of glutMainloop();
I am not able to find out the solution so that I could run the designing of robot in opengl and detecting the moments from a video in opencv IN A LOOP simultaneously.

By: Dhruva Verma

Dhruva Verma — Mon, 19 Sep 2011 07:53:14 +0000

Hello sir,
May i get any Literature Survey on color detection and recognition…
thank you.

By: Prerana

Prerana — Wed, 17 Aug 2011 18:31:51 +0000

Hello Sir,
I am newbie in opencv, i m trying to use image recognition to recognise an apple and haar training seems to be only way of doing it…Can u explain the haar training method in detail may be in different post for those who are doing it for the first time…documentation doesnt seems to be of great help….M sure it’l be extremely useful for all who are aspiring to do the haar training:)
Thank you Sir.

By: aarathi

aarathi — Thu, 28 Apr 2011 15:30:50 +0000

thank u…………..sir……

By: Andol

Andol — Thu, 28 Apr 2011 09:39:58 +0000

@aarathi
check your codes, make sure they are all correctly defined and referred. The error may be caused by incorrect use of the variables.

By: aarathi

aarathi — Wed, 27 Apr 2011 15:54:05 +0000

i got stuck with some errors…

1>—— Build started: Project: large, Configuration: Debug Win32 ——
1>Compiling…
1>new.cpp
1>c:\opencv2.1\projects\large\large\new.cpp(19) : error C2146: syntax error : missing ‘;’ before identifier ‘–’
1>c:\opencv2.1\projects\large\large\new.cpp(19) : error C2065: ‘–’ : undeclared identifier
1>c:\opencv2.1\projects\large\large\new.cpp(19) : error C2146: syntax error : missing ‘;’ before identifier ‘rect’
1>c:\opencv2.1\projects\large\large\new.cpp(26) : error C2146: syntax error : missing ‘;’ before identifier ‘–’
1>c:\opencv2.1\projects\large\large\new.cpp(26) : error C2065: ‘–’ : undeclared identifier
1>c:\opencv2.1\projects\large\large\new.cpp(26) : error C2146: syntax error : missing ‘;’ before identifier ‘rect’
1>c:\opencv2.1\projects\large\large\new.cpp(150) : error C2065: ‘“mainWin”’ : undeclared identifier
1>c:\opencv2.1\projects\large\large\new.cpp(151) : error C2065: ‘“mainWin”’ : undeclared identifier
1>c:\opencv2.1\projects\large\large\new.cpp(167) : error C2065: ‘“mainWin”’ : undeclared identifier
1>c:\opencv2.1\projects\large\large\new.cpp(170) : error C2065: ‘‘q’’ : undeclared identifier
1>c:\opencv2.1\projects\large\large\new.cpp(174) : error C2446: ‘==’ : no conversion from ‘const char *’ to ‘int’
1> There is no context in which this conversion is possible
1>c:\opencv2.1\projects\large\large\new.cpp(174) : error C2040: ‘==’ : ‘int’ differs in levels of indirection from ‘const char [2]‘
1>c:\opencv2.1\projects\large\large\new.cpp(193) : error C2065: ‘‘q’’ : undeclared identifier
1>Build log was saved at “file://c:\OpenCV2.1\projects\large\large\Debug\BuildLog.htm”
1>large – 13 error(s), 0 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

By: aarathi

aarathi — Wed, 27 Apr 2011 15:53:35 +0000

sir its showing the error 1>c:\opencv2.1\projects\large\large\new.cpp(174) : error C2040: ‘==’ : ‘int’ differs in levels of indirection from ‘const char [2]‘

By: aarathi

aarathi — Wed, 27 Apr 2011 15:51:19 +0000

can i get the header files used?

By: Andol

Andol — Wed, 27 Apr 2011 08:49:50 +0000

@Aarathi
actually there are two parts of codes of mouse control using object detection, one part is object detection, and the other is to control the mouse in the system which can be referred here
http://www.andol.info/research/1756.htm

By: Aarathi

Aarathi — Sun, 24 Apr 2011 16:14:10 +0000

Am doing project in olor detection and mouse controls in visual c++. can i just get the code for that.i have been trying it in open cv.

By: caritas

caritas — Thu, 25 Nov 2010 06:34:42 +0000

can you give a sample program on the color recognition???
thanks….

By: Andol

Andol — Thu, 11 Nov 2010 10:14:07 +0000

yes it is

By: eqeen

eqeen — Wed, 10 Nov 2010 08:54:36 +0000

is the color recognition code given is the full one?

By: Ayush

Ayush — Tue, 09 Mar 2010 05:04:00 +0000

waiting to know the robust recognition functions..

By: Andol

Andol — Sun, 06 Sep 2009 10:35:43 +0000

hope it helps.

By: ninhnv

ninhnv — Sat, 05 Sep 2009 16:55:33 +0000

Thank!
I ‘m very interested in color recognition

By: Andol

Andol — Wed, 06 May 2009 07:44:45 +0000

Thanks.
These days i am quite busy with some investigations, once get time, i will continue to post the latest recognition function applications by using openCV.

By: How I Was Able to Lose Thirty Póunds in Only a Month

How I Was Able to Lose Thirty Póunds in Only a Month — Wed, 06 May 2009 04:16:42 +0000

Hi, interesting post. I have been thinking about this topic,so thanks for writing. I’ll likely be coming back to your blog. Keep up great writing

By: Andol

Andol — Tue, 07 Apr 2009 08:23:43 +0000

Actually, there are 3 methods to recognize the colour objects which are:
1) using histgram to match the destination image;
2) using cvSetImageCOI to get specific color channel;
3) using cvSplit & cvMerge to manipulate channel to get the target colours.
there i put on another post about color recognition using openCV here as well as some parts of codes, hope it will be useful: http://www.iandol.com/research/882.htm

By: Color recognition using openCV 2 | Andol

Color recognition using openCV 2 | Andol — Fri, 03 Apr 2009 10:19:27 +0000

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By: Youngsup Park

Youngsup Park — Fri, 03 Apr 2009 02:16:02 +0000

I have interested in color recognition.