In this docker image I have all of the dependencies for both Leaf Area and Bud Area including working copies and works in progress. We’re going to be using the same setup as with the Leaf Area notebook. OpenCV will be used for preprocessing the image and pixel selection by range. Matplotlib is used from rendering images and graphs. We take advantage of skimage.measure.label for taking measurements and label them. We take these components and use OpenCV to find and annotate the contours.
We can easily mask the original image with OpenCV’s bitwise_and which takes the original image and the mask and outputs a masked image.
Cannabis Computer Vision
This is a side-by-side view of the HSV colorspace which the computer uses to isolate the buds and the masked preview. We use the numpy.vstack to vertically stack the images. I chose vstack for the gists here and hstack in the notebook, but it really is a matter of developer preference.
Refining the Mask
We can refine the mask using the same binary threshold, erode, and dilate technique used on the Leaf Area. This will clean up the specs of frost leave from the actual Bud Area.
Before and After Cleaning Up the Contours
You can see the vstack comparing the contours pre and post cleanup.
Enhance Mask with Labeled Components
Using skimage.measure.label we are further filtering out noise by ignoring blobs smaller than 100px. This means buds have to be this size or greater to get added to the labeled mask.
Label the Buds
Now we have what we need to label the bud sites on the preview image.