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Using X-ray computed tomography, or CT scanning, coupled with image analysis, this project aims to model knot size and shape within a tree stem based on the tree’s external profile.
Knots are a critical factor in timber strength and value. Being able to estimate the effects of forest management decisions on the volume of shape of knots within the tree stems would be highly advantageous. Following in the footsteps of French and Canadian studies we have applied CT scanning techniques using Scottish-grown Sitka spruce.
Our primary objective is to use the data to model internal knot geometry and volume. External branch external characteristics will then be linked to the model so that the volume, shape and location of knots within trees can be predicted based on external observations.
The project is co-funded by FC Scotland, now Forestry and Land Scotland, FC England, now Forestry England and Natural Resources Wales, via the Forest Products Research Programme (Wood and Timber Properties).
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