Streaming camera frames for template matching
Template matching is a machine-learning technique to find areas of an image that match a given template image. We will apply template matching to every frame of a real-time video stream to locate an image.
Getting ready
Install the OpenCV and c2hs toolkits:
$ sudo apt-get install c2hs libopencv-dev
Install the CV library from cabal. Be sure to include the –fopencv24
or –fopencv23
parameter depending on which version of OpenCV is installed:
$ cabal install CV -fopencv24
Also, create a small template image. In this recipe, we use an image of Lena, which is usually used in many image-processing experiments. We name this image file lena.png
:
How to do it…
In a new file, Main.hs
, start with these steps:
- Import ...
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