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error -27 null array pointer is passed in function cvgetmat

post in threaded view ♦ ♦ | Report Content as Inappropriate ♦ ♦ Re: Null pointer (NULL array pointer is passed) in function cvGetMat C:\...\cxar Hi, I'm running an OpenCV app, and I get this same message: OpenCV GUI Error Handler Null pointer (NULL array pointer is passed) in function cvGetMat, .\cxarray.cpp(2780) How can I fix this?? PLEASE HELP ME! I've been working on this 24/7 for the past 2 weeks Thanks guilherme_orlandini Reply | Threaded Open this post in threaded view ♦ ♦ | Report Content as Inappropriate ♦ ♦ Re: Null pointer (NULL array pointer is passed) in function cvGetMat C:\...\cxar Generaly, this problem is related to wrong path of image, or error in the name of image.....can you post your code? « Return to opencv-users | 1 view|%1 views Loading... Free forum by Nabble Edit this page

) {image = cvCreateImage( cvGetSize(frame), 8, 3 );image->origin = frame->origin;}myMethod(image);cvShowImage( "CamShiftDemo", image );...Why do I receive this error ? I'm just passing the pointer image byreference.. when myMethod finishes, I should have the same pointer tothe modified image instead it is NULL.. ?------------------------------------Change settings: http://www.yahoogroups.com/mygroups, selectGet Emails (get all posts)Daily Digest (one summary email per day)Read on the web (read posts on http://opencv-users.1802565.n2.nabble.com/Re-Null-pointer-NULL-array-pointer-is-passed-in-function-cvGetMat-C-cxar-td7109176.html the web only)Or Unsubscribe by mailing OpenCV-***@yahoogroups.com Lim Yeen Fei 2008-06-16 01:07:01 UTC PermalinkRaw Message well looks like you forgot to post 'myMethod'... probably porblemwith it.... try use ptr of ptr instead if you plan to deallocate anddo data manipulation inside the function.Post by aneuryzmaHi,IplImage *image http://opencv.yahoogroups.narkive.com/DD4CXgk8/null-pointer-null-array-pointer-is-passed-in-function-cvgetmat-c-cxarray = 0;...if( !image ) {image = cvCreateImage( cvGetSize(frame), 8, 3 );image->origin = frame->origin;}myMethod(image);cvShowImage( "CamShiftDemo", image );...Why do I receive this error ? I'm just passing the pointer image byreference.. when myMethod finishes, I should have the same pointer tothe modified image instead it is NULL.. ?------------------------------------Change settings: http://www.yahoogroups.com/mygroups, selectGet Emails (get all posts)Daily Digest (one summary email per day)Read on the web (read posts on the web only)Or Unsubscribe by mailing OpenCV-***@yahoogroups.com aneuryzma 2008-06-18 09:42:05 UTC PermalinkRaw Message do you mean a pointer to a pointer ?Post by Lim Yeen Feiwell looks like you forgot to post 'myMethod'... probably porblemwith it.... try use ptr of ptr instead if you plan to deallocate anddo data manipulation inside the function.Post by aneuryzmaHi,IplImage *image = 0;...if( !image ) {image = cvCreateImage( cvGetSize(frame), 8, 3 );image->origin = frame->origin;}myMethod(image);cvShowImage( "CamShiftDemo", image

to sign up and get a new user account. We're sorry about that inconvenience, but we think it's better https://processing.org/discourse/beta/num_1237916499.html in the long run. The content on this forum will remain online. http://permalink.gmane.org/gmane.comp.lib.opencv/38507 Index › Programming Questions & Help › Video Capture, Movie Playback, Vision Libraries › error message with opencv and processing in ubuntu Previous Topic | Next Topic Pages: 1 error message with opencv and processing in ubuntu (Read 2426 times) dadada YaBB Newbies Offline Posts: error -27 5 error message with opencv and processing in ubuntu Mar 24th, 2009, 6:41pm hi, i just installed opencv and am trying out the examples shown here: http://ubaa.net/shared/processing/opencv/i'm running ubuntu intrepid 8.10 and when i run the examples in sketchbook here is the error i get:this is the error for the 'movie' example:## An unexpected error has been detected by error -27 null Java Runtime Environment:## SIGSEGV (0xb) at pc=0xb7f76472, pid=6749, tid=2904116112## Java VM: Java HotSpot(TM) Client VM (11.0-b15 mixed mode linux-x86)# Problematic frame:# C [libc.so.6+0x71472] cfree+0x52## An error report file with more information is saved as:# /home/yayu/processing/processing-1.0.3/hs_err_pid6749.log## If you would like to submit a bug report, please visit:# http://java.sun.com/webapps/bugreport/crash.jsp# The crash happened outside the Java Virtual Machine in native code.# See problematic frame for where to report the bug.#can you tell me whats going on? please help! dadada YaBB Newbies Offline Posts: 5 Re: error message with opencv and processing in ub Reply #1 - Mar 24th, 2009, 6:45pm and when i try the example here;http://createdigitalmotion.com/2009/02/06/processing-tutorials-getting-started-with-video-processing-via-opencv/i get the following error:Error while starting capture : device 0OpenCV could not define source dimensions.OpenCV ERROR: Null pointer (NULL array pointer is passed)in function cvGetMat, cxarray.cpp(2780)Terminating the application...called from cvUnregisterType, cxpersistence.cpp(4933)Terminating the application...called from cvUnregisterType, cxpersistence.cpp(4933)Terminating the application...called from cvUnregisterType, cxpersistence.cpp(4933)Terminating the application...called from cvUnregisterType, cxpersistence.cpp(4933)Terminating the application...called from cvUnregisterType, cxpersistence.cpp(4933)Terminating the application...called from cvUnregisterType, cxpersistence.cpp(4933)Terminating the application...called from cvUnregisterType, cxpersistence.cpp(4933)Terminating the application...called from cvUnregisterType, cxpersistence.cpp(4933)Terminating the application...called from cv

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