OpenCV Python Tutorial For Beginners 27 - Template matching using OpenCV in Python

OpenCV is an image processing library created by Intel and later supported by Willow Garage and now maintained by Itseez. opencv is available on Mac, Windows, Linux. Works in C, C++, and Python.
it is Open Source and free. opencv is easy to use and install.

Starting with an overview of what the course will be covering, we move on to discussing morphological operations and practically learn how they work on images. We will then learn contrast enhancement using equalization and contrast limiting. Finally we will learn 3 methods to subtract the background from the video and implement them using OpenCV.

At the end of this course, you will have a firm grasp of Computer Vision techniques using OpenCV libraries. This course will be your gateway to the world of data science.

Feel the real power of Python and programming! The course offers you a unique approach of learning how to code by solving real world problems.

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[enayatharia]

Thanks for your tutorial! The top-left of the template is Messi's hair which is almost black, and not white!!
The res matrix shows how "good" or "bad" is the template matched to different locations in the original image, since the template is moving over the image and checking how much they are matched in every location. Depending on the method used you should look for the max or min value in the res matrix.

[arthurh]

Helped me with the first steps for my bachelor thesis. Thank you very much!

[ratanparija]

How many more tutorials/videos are u planning for this course ??

[kuoshi]

since we only need one point, why not choose the max in res

[athmakurithanush]

Why only the topleft point is the brightest but not all the points in the template

[ricard]

In the following command I multiplied by 4 to get a bigger rectange. How can I save only the image of this rectangle ? cv.rectangle(img_rgb, pt, (pt[0] +w*4, pt[1] +h*4), (0, 0, 255), 2)

[xlsautomatizaciones]

What if the template image is not in the main image? What would be the result?

[chamilarathnayake]

When I try to do this with a video I get a error. Please help me

[dojo-devops]

How to find template location if image is roated.

[nandlaldhole]

where have you kept the main image and template (path for both the images.)

[kevinlcarlson]

Is it possible to match a template which has been rotated?

[satyamchauhan]

you told wrong here, np.where don't give us elements it give us the indices

[sons]

Please! How can I create an array with templates

[mukulkumar]

can anyone explain why [ : : -1 ] is used above in for loop ??

[ahmed.bhewary]

can anyone show me how to have a Messie face as a template?

[bluemaroon]

Messi Lover
Attachment of Messi encourage me to hard work

[jonathanalcaide]

You can get the same tutorial just by googling a lil bit... not original content