Comments on: Near realtime face detection on the iPhone w/ OpenCV port [w/code,video] http://www.morethantechnical.com/2009/08/09/near-realtime-face-detection-on-the-iphone-w-opencv-port-wcodevideo/ On software, code, the internet and more. Wed, 08 Feb 2012 15:59:56 +0000 hourly 1 http://wordpress.org/?v= By: Roy http://www.morethantechnical.com/2009/08/09/near-realtime-face-detection-on-the-iphone-w-opencv-port-wcodevideo/comment-page-1/#comment-15976 Roy Sat, 31 Dec 2011 07:18:58 +0000 http://www.morethantechnical.com/?p=400#comment-15976 @jaspreet Of course, you can simply invoke the "imwrite" function, or use iOS APIs for saving images... @jaspreet
Of course, you can simply invoke the “imwrite” function, or use iOS APIs for saving images…

]]> By: jaspreet http://www.morethantechnical.com/2009/08/09/near-realtime-face-detection-on-the-iphone-w-opencv-port-wcodevideo/comment-page-1/#comment-15925 jaspreet Fri, 30 Dec 2011 10:26:04 +0000 http://www.morethantechnical.com/?p=400#comment-15925 help me sir is there any possibility to store the detected images and this detected image is to be reconginise help me sir is there any possibility to store the detected images and this detected image is to be reconginise

]]> By: Roy http://www.morethantechnical.com/2009/08/09/near-realtime-face-detection-on-the-iphone-w-opencv-port-wcodevideo/comment-page-1/#comment-12112 Roy Mon, 17 Oct 2011 14:29:17 +0000 http://www.morethantechnical.com/?p=400#comment-12112 @Kelly, I can't recover the xcodeproj for this old project anymore... however all the code including optimization is in the repository. It's only a matter of setting up a new iOS project and adding all the files into it. @Kelly, I can’t recover the xcodeproj for this old project anymore… however all the code including optimization is in the repository.
It’s only a matter of setting up a new iOS project and adding all the files into it.

]]> By: Kelly http://www.morethantechnical.com/2009/08/09/near-realtime-face-detection-on-the-iphone-w-opencv-port-wcodevideo/comment-page-1/#comment-11143 Kelly Sat, 01 Oct 2011 09:50:59 +0000 http://www.morethantechnical.com/?p=400#comment-11143 Hi Roy, Your work and tutorial save a lot of our development time. Do you think we can purchase your code with the optimization technique? I could arrange payment by freelancer.com: I know it is not about money; however, your great work would really help us a lot. https://www.freelancer.com/projects/Mobile-Phone-iPhone/iphone-app-face-recognition.html Thanks again.. kelly Hi Roy,
Your work and tutorial save a lot of our development time. Do you think we can purchase your code with the optimization technique?

I could arrange payment by freelancer.com: I know it is not about money; however, your great work would really help us a lot.

https://www.freelancer.com/projects/Mobile-Phone-iPhone/iphone-app-face-recognition.html

Thanks again..
kelly

]]> By: Starter http://www.morethantechnical.com/2009/08/09/near-realtime-face-detection-on-the-iphone-w-opencv-port-wcodevideo/comment-page-1/#comment-8482 Starter Wed, 20 Jul 2011 22:03:49 +0000 http://www.morethantechnical.com/?p=400#comment-8482 Hi, First, thank you for your page! Where can we find your optimized version of cvHarr.cpp, beacause it's not in your svn in FaceDetector-iPhone? Thank you Hi,
First, thank you for your page!

Where can we find your optimized version of cvHarr.cpp, beacause it’s not in your svn in FaceDetector-iPhone?

Thank you

]]> By: Paolo http://www.morethantechnical.com/2009/08/09/near-realtime-face-detection-on-the-iphone-w-opencv-port-wcodevideo/comment-page-1/#comment-7739 Paolo Thu, 23 Jun 2011 14:15:08 +0000 http://www.morethantechnical.com/?p=400#comment-7739 Hi Roy, I am a PhD student from the university of Modena and Reggio Emilia, Italy. I have cross-compiled opencv-2.0.0 on a smart camera board equipped with embedded linux. This board is based on the ARM PXA270 processor. I successfully tested the original opencv face detector. Now I would like use your improved face detector. I have cross compiled your code (mycvHaarDetectObjects.cpp) and statically linked with my main program and with opencv libs. My code calls your function mycvHaarDetectObjects(). The cross-compilation is successful but at run time the program aborts with this error: “OpenCV Error: Unspecified error (The node does not represent a user object (unknown type?)) in cvRead, file ../../opencv-2.0.0.int/src/cxcore/cxpersistence.cpp, line 4722 terminate called after throwing an instance of cv::Exception’ Aborted” This run time error happen when the main code try to load the file haarcascade_frontalface_alt2.xml. This is the statement : cascade = (CvHaarClassifierCascade*)cvLoad( cascade_name, 0, 0, 0 ); where cascade_name point to the filename string. The function call at the cvLoad() hangs because the system doesn’t know the type related with the format of the file haarcascade_frontalface_alt2.xml. I have tried to fix this problem adding at your source file the code to register a new type : CvType haar_type() and related functions. I have picked up this code from the original cvhaar.cpp source file. Now the run time error seems to be fixed but the program doesn’t detect any face. Please could you give me some tips about the workaround of this problem. Thanks in advance. Paolo Hi Roy,

I am a PhD student from the university of Modena and Reggio Emilia, Italy. I have cross-compiled opencv-2.0.0 on a smart camera board equipped with embedded linux. This board is based on the ARM PXA270 processor. I successfully tested the original opencv face detector. Now I would like use your improved face detector. I have cross compiled your code (mycvHaarDetectObjects.cpp) and statically linked with my main program and with opencv libs. My code calls your function mycvHaarDetectObjects(). The cross-compilation is successful but at run time the program aborts with this error:

“OpenCV Error: Unspecified error (The node does not represent a user object (unknown type?)) in cvRead, file ../../opencv-2.0.0.int/src/cxcore/cxpersistence.cpp, line 4722
terminate called after throwing an instance of cv::Exception’
Aborted”

This run time error happen when the main code try to load the file haarcascade_frontalface_alt2.xml. This is the statement : cascade = (CvHaarClassifierCascade*)cvLoad( cascade_name, 0, 0, 0 ); where cascade_name point to the filename string.

The function call at the cvLoad() hangs because the system doesn’t know the type related with the format of the file haarcascade_frontalface_alt2.xml.

I have tried to fix this problem adding at your source file the code to register a new type : CvType haar_type() and related functions. I have picked up this code from the original cvhaar.cpp source file.

Now the run time error seems to be fixed but the program doesn’t detect any face.

Please could you give me some tips about the workaround of this problem.

Thanks in advance.

Paolo

]]> By: Paolo http://www.morethantechnical.com/2009/08/09/near-realtime-face-detection-on-the-iphone-w-opencv-port-wcodevideo/comment-page-1/#comment-7683 Paolo Tue, 21 Jun 2011 16:07:21 +0000 http://www.morethantechnical.com/?p=400#comment-7683 Hi Roy, I am a PhD student from the university of Modena and Reggio Emilia, Italy. I have cross-compiled opencv-2.0.0 on a smart camera board equipped with embedded linux. This board is based on the ARM PXA270 processor. I successfully tested the original opencv face detector. Now I would like use your improved face detector. I have cross compiled your code (mycvHaarDetectObjects.cpp) and statically linked with my main program and with opencv libs. My code calls your function mycvHaarDetectObjects(). The cross-compilation is successful but at run time the program aborts with this error: "OpenCV Error: Unspecified error (The node does not represent a user object (unknown type?)) in cvRead, file ../../opencv-2.0.0.int/src/cxcore/cxpersistence.cpp, line 4722 terminate called after throwing an instance of cv::Exception' Aborted" This run time error happen when the main code try to load the file haarcascade_frontalface_alt2.xml. This is the statement : cascade = (CvHaarClassifierCascade*)cvLoad( cascade_name, 0, 0, 0 ); where cascade_name point to the filename string. The function call at the cvLoad() hangs because the system doesn't know the type related with the format of the file haarcascade_frontalface_alt2.xml. I have tried to fix this problem adding at your source file the code to register a new type : CvType haar_type() and related functions. I have picked up this code from the original cvhaar.cpp source file. Now the run time error seems to be fixed but the program doesn't detect any face. Please could you give me some tips about the workaround of this problem. Thanks in advance. Paolo Hi Roy,

I am a PhD student from the university of Modena and Reggio Emilia, Italy. I have cross-compiled opencv-2.0.0 on a smart camera board equipped with embedded linux. This board is based on the ARM PXA270 processor. I successfully tested the original opencv face detector. Now I would like use your improved face detector. I have cross compiled your code (mycvHaarDetectObjects.cpp) and statically linked with my main program and with opencv libs. My code calls your function mycvHaarDetectObjects(). The cross-compilation is successful but at run time the program aborts with this error:

“OpenCV Error: Unspecified error (The node does not represent a user object (unknown type?)) in cvRead, file ../../opencv-2.0.0.int/src/cxcore/cxpersistence.cpp, line 4722
terminate called after throwing an instance of cv::Exception’
Aborted”

This run time error happen when the main code try to load the file haarcascade_frontalface_alt2.xml. This is the statement : cascade = (CvHaarClassifierCascade*)cvLoad( cascade_name, 0, 0, 0 ); where cascade_name point to the filename string.

The function call at the cvLoad() hangs because the system doesn’t know the type related with the format of the file haarcascade_frontalface_alt2.xml.

I have tried to fix this problem adding at your source file the code to register a new type : CvType haar_type() and related functions. I have picked up this code from the original cvhaar.cpp source file.

Now the run time error seems to be fixed but the program doesn’t detect any face.

Please could you give me some tips about the workaround of this problem.

Thanks in advance.

Paolo

]]> By: chiris http://www.morethantechnical.com/2009/08/09/near-realtime-face-detection-on-the-iphone-w-opencv-port-wcodevideo/comment-page-1/#comment-7564 chiris Sat, 18 Jun 2011 16:46:23 +0000 http://www.morethantechnical.com/?p=400#comment-7564 hi, +1 could u share a working xcode project....? thx hi, +1
could u share a working xcode project….?
thx

]]> By: tony http://www.morethantechnical.com/2009/08/09/near-realtime-face-detection-on-the-iphone-w-opencv-port-wcodevideo/comment-page-1/#comment-7533 tony Fri, 17 Jun 2011 10:22:46 +0000 http://www.morethantechnical.com/?p=400#comment-7533 I also encount some error in .cpp file, when I compile the project. could you share the .xcodeproj file? I also encount some error in .cpp file, when I compile the project. could you share the .xcodeproj file?

]]> By: Antoine Vandenheste http://www.morethantechnical.com/2009/08/09/near-realtime-face-detection-on-the-iphone-w-opencv-port-wcodevideo/comment-page-1/#comment-7009 Antoine Vandenheste Sun, 05 Jun 2011 07:47:56 +0000 http://www.morethantechnical.com/?p=400#comment-7009 Also do you have a donate button or something I'd really like to support your work :) Also do you have a donate button or something I’d really like to support your work :)

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