>>> from CVtypes import cv
Traceback (most recent call last):
File “”, line 1, in
from CVtypes import cv
File “E:\Charles\DownThemAll\CVtypes sf (23-53)\CVtypes.py”, line 4169, in
(’dst’, POINTER(CvMat), 1), # CvMat* dst
File “E:\Charles\DownThemAll\CVtypes sf (23-53)\CVtypes.py”, line 377, in cfunc
return CFUNCTYPE(result, *atypes)((name, dll), tuple(aflags))
AttributeError: function ‘cvConvertPointsHomogenious’ not found

Can you explain to me what this step means:

“You’ll, of course, need to download OpenCV and get the dll’s on your path.”

Moreover, can you give a detailed instruction on how I am supposed to make this work. I installed OpenCV in windows, I have the path to the dll, I’ve downloaded your CVtypes.py but I can’t make it work.

Please be gentle. Python newbie here.

Thanks.

has anyone worked with the cvCreateStructuringElementEx function? its sixth argument, the “mask,” is supposed to be a “pointer to the structuring element data, a plane array, representing row-by-row scanning of the element matrix.”

But OpenCV (and cvtypes) expect a pointer to an int…how can that capture that a multidimensional list of integers? I tried passing byref this kind of array but no luck.

mask = (c_int * 3 * 3)((0, 0, 0), (0, 0, 0), (0, 0, 0))

Any help is greatly appreciated.

def find_circles(img):
gray = cv.CreateImage(cv.GetSize(img), 8, 1)
storage = cv.CreateMemStorage(0)
cv.CvtColor(img, gray, cv.BGR2GRAY)
cv.Smooth(gray, gray, cv.GAUSSIAN, 9, 9)
circles = cv.HoughCircles(gray, storage, cv.HOUGH_GRADIENT, 2, int(gray['height'])/4, 200, 100)

—
Traceback (most recent call last):
File “/home/liveuser/Desktop/bot/CVtypes/vision.py”, line 63, in
find_circles(src)
File “/home/liveuser/Desktop/bot/CVtypes/vision.py”, line 37, in find_circles
circles = cv.HoughCircles(gray, storage, cv.HOUGH_GRADIENT, 2, gray['height']/4, 200, 100)
TypeError: sequence index must be integer, not ’str’
—

I think it has something to do with when it is trying to store results to a list, but I’m not sure where to start in solving the problem.

I got this working on mac os x Leopard… However, I had to explicitly include the paths to the dylib files as per below:

if os.name == ‘posix’:
#_cxDLL = cdll.LoadLibrary(’libcxcore.dylib’)
_cxDLL = cdll.LoadLibrary(’/opt/local/lib/libcxcore.1.dylib’)
_cvDLL = cdll.LoadLibrary(’/opt/local/lib/libcv.1.dylib’)
_hgDLL = cdll.LoadLibrary(’/opt/local/lib/libhighgui.dylib’)

This works but what do I need to do so that the full path names can be omitted?

Thanks in advance,

Ric