How to point the javacvPro to the right folder?

martiinko

How to point the javacvPro to the right folder?

in Contributed Library Questions • 1 year ago

So I've got the javacvPro work with the Processing 2.0a8, well sort of.
It totally didn't work with the 1.5, so I tried the new one, and it actually begins the program, but then stops at the detect().

It gives me this error:

Charge le fichier de description d'objet : haarcascade_frontalface_alt.xml
OpenCV Error: Null pointer (Invalid classifier cascade) in unknown function, file C:\slave\WinInstallerMegaPack\src\opencv\modules\objdetect\src\haar.cpp, line 1041
Exception in thread "Animation Thread" java.lang.RuntimeException: C:\slave\WinInstallerMegaPack\src\opencv\modules\objdetect\src\haar.cpp:1041: error: (-27) Invalid classifier cascade

I have no ... clue why is he trying to seek for that haar.cpp file in such weird location. Is there a fix to tell him that the file is else where? C:\opencv\...

Thanks

Replies(5)

martiinko

Re: How to point the javacvPro to the right folder?

1 year ago

Ok never mind :D I made it work.

rtystgeeke

Re: Re: How to point the javacvPro to the right folder?

11 months ago

How did you end up getting around this issue. I have the same error pop up.

syd_xp

Re: Re: How to point the javacvPro to the right folder?

6 months ago

How did you made it ????

rtystgeeke

Re: How to point the javacvPro to the right folder?

11 months ago

How did you end up getting around this issue. I have the same error pop up. And quite frankly after putting it down for a bit am still pulling out my hair. I am using processing version 1.5.1. Mainly used these sources for install.

http://robottini.altervista.org/processing-and-opencv-2-3-1-how-to-install-in-win-7 (but I'm using windows 7)

https://forum.processing.org/topic/how-to-install-opencv-properly-i-ve-tried-everything-i-can-but-there-s-no-progress#25080000001500011

And other sources:

http://www.mon-club-elec.fr/pmwiki_reference_lib_javacvPro/pmwiki.php?n=Main.Opencvdetect

This is my error:

OpenCV Error: Null pointer (Invalid classifier cascade) in unknown function, file C:\slave\WinInstallerMegaPack\src\opencv\modules\objdetect\src\haar.cpp, line 1041

Exception in thread "Animation Thread" java.lang.RuntimeException: C:\slave\WinInstallerMegaPack\src\opencv\modules\objdetect\src\haar.cpp:1041: error: (-27) Invalid classifier cascade

at com.googlecode.javacv.cpp.opencv_objdetect.cvHaarDetectObjects(Native Method)

at monclubelec.javacvPro.OpenCV.detect(Unknown Source)

at sketch_20121026.draw(sketch_20121026.java:70)

at processing.core.PApplet.handleDraw(Unknown Source)

at processing.core.PApplet.run(Unknown Source)

at java.lang.Thread.run(Thread.java:662)

I am trying to do a detect() and it throws the error at this line:

faces1 = ocv1.detect();// detect anything ressembling a FRONTALFACE

Any help would be appreciated!

david.hat..

Re: How to point the javacvPro to the right folder?

4 months ago

I was having this problem too on windows 7 with the examples provided with javacvPro. What fixed it was changing the call:

"opencv.cascade("/usr/local/share/OpenCV/haarcascades/","haarcascade_frontalface_alt.xml"); "

To:

"opencv.cascade("C:\\opencv\\data\\haarcascades\\","haarcascade_frontalface_alt.xml"); "

The double slashes are necessary in java because some special chars need to be escaped inside of strings