Single image and multiple colors/objects

asked 2015-06-10 09:19:42 -0600

In my image, I have pinkish objects and orange/brown objects. I would like to calculate the area of each object individually and a count for the number of each objects within their respective color categories. How do I do this, where do I start? All the videos I have seen focus on 1 objects and color set, not multiple. Please help.

Thanks!

Here is a link to the image: CR2 Image File - 21 MB

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answered 2015-06-11 08:26:58 -0600

StevenPuttemans

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Some steps to follow

Start by converting your image to a color space that can be better segmented for visible colors, like HSV color space.
Then define threshold values for your specific colors on the H S and V color channels seperately.
For each color create a binary thresholded mask based on the threshold values previously defined.
On each mask you can apply findContours (even remove some noise with a gaussian blur if you need that) and detect all the available blobs/objects.
Now count the number of objects and assign an index to each blob.
In order to be sure that an index sticks to blob, apply a Kalman filter tracking and use a distance measure to connect blobs between frames.