CODEWITHSUNDEEP
pythonopencv
user594044
user594044

Reputation: 265

MatchTemplate in OpenCV with Python

I'm using opencv with python bindings. I'm trying to use the template match, but it's not performing exactly as I need it to. If there is no image matching the template I supply it, I don't want it to return a match. It seems to always return a match whether the actual template exists at all in the image I supply it.

I've looked at the documentation for the opencv with Python and can't seem to find any mention of how to set a minimum threshold for matching templates. I need it to be relatively strict when comparing the template to the image.

image = LoadImage("c:/image.png")

template = LoadImage("c:/image-crop2.png")

W,H = GetSize(image)

w,h = GetSize(template)

width = W - w + 1

height = H - h + 1

result = CreateImage((width, height), 32, 1)

MatchTemplate(image, template, result, CV_TM_CCORR)

(min_x, max_y, minloc, maxloc) = MinMaxLoc(result)

(x, y) = minloc

print result

Upvotes: 2

Views: 5591

Answers (1)

Andrey Kamaev
Andrey Kamaev

Reputation: 30122

See this answer: OpenCV. Drawing rectangle when matching

You are having exactly the same problem - MatchTemplate returns a kind of similarity map instead of single match position.

Upvotes: 2

Related Questions