Scanning working incorrectly on Windows

[YenTheFirst]

from #8 (comment)

scanning 01
OpenCV Error: Bad argument (Array should be CvMat or IplImage) in cvGetSize, fil
e ......\opencv-2.4.7.2\modules\core\src\array.cpp, line 1238
Traceback (most recent call last):
File "G:\Python27\lib\runpy.py", line 162, in _run_module_as_main
"main", fname, loader, pkg_name)
File "G:\Python27\lib\runpy.py", line 72, in _run_code
exec code in run_globals
File "D:\Projects\3rd Party\card_scan\utils\run_scan.py", line 53, in

capture_box(cam, next_box)

File "D:\Projects\3rd Party\card_scan\utils\run_scan.py", line 18, in capture_
box
captures = scan_card.watch_for_card(cam)
File "scan_card.py", line 51, in watch_for_card
size = cv.GetSize(img)
cv2.error: Array should be CvMat or IplImage

I'm on Windows, not sure if I installed incorrect versions of anything (I did have to manually edit Elixir because it was importing incorrectly from SQLAlchemy)

[dampete]

Ok, thanks Yen. I'll subscribe to this :)

[YenTheFirst]

ok, I finally got some time to look into this.
I was unable to reproduce your error.
On my Windows machine, with opencv 2.3.1, numpy 1.6.1, and python 2.7, it was able to start scanning, and recognize cards.

What versions of numpy and opencv are you using?

Also, what model is your webcam? it's possible, though unlikely, that your webcam is incompatible with opencv. try opening a python shell, and running this code. you should see your webcam output.

import cv

cv.NamedWindow(";camera")
capture = cv.CaptureFromCAM(0)

while True:
    img = cv.QueryFrame(capture)
    cv.ShowImage("camera", img)
    if cv.WaitKey(10) == 27:
        break
cv.DestroyWindow("camera")

[dampete]

Will try that later, thanks for inspecting this!

I don't know the exact model of my webcam, but it's Philips brand, if that info serves for anything. I'll post if this test is successful or not once I'm able to run it :)