Program crahes when the function "cvCvtColor" is called (Bug #70)

Added by Илья Москвин about 15 years ago. Updated almost 13 years ago.

Status:Cancelled Start date:
Priority:Blocker Due date:
Assignee:Vadim Pisarevsky % Done:

0%
Category:python bindings
Target version:-
Affected version: Operating System:
Difficulty: HW Platform:
Pull request:

Description

Program crahes when the function "cvCvtColor" is called. The crash occures only when we try to convert 3-channel image to 1-channel. Converting 3-channel to 3-channel works normally. This code crashes:

from opencv import cv 
from opencv import highgui as hg
image=hg.cvLoadImage('D:\\system\\Desktop\\lena.jpg')
gray=cv.cvCreateImage(cv.cvGetSize(image),8,1)
print 1
cv.cvCvtColor(image,gray, cv.CV_RGB2GRAY)
print 2

If we call this function in a new thread it works normally. But in WinXP this trick doesn@t work.
Following code doesn@t crash in Win Vista, but crashes in Win XP:

def track():       
    from opencv import cv 
    from opencv import highgui as hg   
    image=hg.cvLoadImage('D:\\system\\Desktop\\lena.jpg')    
    gray=cv.cvCreateImage(cv.cvGetSize(image),8,1)
    print 1
    cv.cvCvtColor(image,three, cv.CV_RGB2XYZ)
    print 2
if +name+ == '+main+':
    import threading
    p1=threading.Thread(target=track)
    p1.start()

Environment: OpenCV 2.0.0.a, Python 2.6, SWIG python bindings, 2 different mashines with Windows Vista Home Premium and Windows XP Pro SP3

Related issues

duplicated by Bug #80: Functions "CvtColor" and "Threshold" crash with the new p... Cancelled

Associated revisions

Revision 065612a1
Added by Roman Donchenko over 11 years ago

Merge pull request #70 from melody-rain:Added_perf_kalman_cpp

History

#1
Updated by anonymous - about 15 years ago

Would you be able to try with the new Python bindings:

def track():       
    import cv
    image=cv.LoadImage('D:\\system\\Desktop\\lena.jpg')    
    gray=cv.CreateImage(cv.GetSize(image),8,1)
    print 1
    cv.CvtColor(image,three, cv.CV_RGB2XYZ)
    print 2
if +name+ == '+main+':
    import threading
    p1=threading.Thread(target=track)
    p1.start()
  • Status deleted (Open)

#2
Updated by Илья Москвин about 15 years ago

We tried to use the new bindings, but symptoms with "CvtColor" are the same, and the majority of functions also don@t work properly as yet.
We are really sorry about our mistakes in code example. The seventh string in the second piece of code could look like this:
cv.CvtColor(image,gray, cv.CV_RGB2GRAY)
Convertion from RGB to XYZ and many other 3-channel formats always works properly.

#3
Updated by James Bowman about 15 years ago

Please raise tickets for the functions in the Python API that don't work properly yet. Thanks.

#4
Updated by Илья Москвин about 15 years ago

We actually saw, that functions "CvtColor", "Treshold" and "FindContours" don@t work. Also, in the Internet there are messages, that the new Python interface is immature. Of course, we will raise separate tickets for each unworking function, that we discover.

#5
Updated by James Bowman about 15 years ago

Changing component to swig python.

suggest you switch to new bindings.

#6
Updated by James Bowman about 15 years ago

Unclear who maintainer of swig bindings is. Assign to Vadim for triage.

#7
Updated by Илья Москвин about 15 years ago

The new bindings after building them with MS C++VStudio are working properly, but we don@t know about the swig because we didn@t rebuild them with MSVS.

#8
Updated by anonymous - over 14 years ago

P.S. I can't tell you how glad I am to now be able to compile OpenCV out of the box as x86_64 ... It was bugging me to have to use i386 because of Carbon. Now we get yummy, yummy Cocoa. :-)

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owner changed from aatreya to vp153

#9
Updated by Vadim Pisarevsky over 14 years ago

SWIG bindings are no longer supported. Use the new bindings, there cv.CvtColor works well.

  • Status set to Done
  • (deleted custom field) set to wontfix

#10
Updated by Andrey Kamaev almost 13 years ago

  • Status changed from Done to Cancelled
  • Category set to python bindings

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