"Willow" is a specific color name for American Olean's 1x1 abrasive or matte unglazed mosaic tiles.
The "Willow" team at INRIA (a French research institute) frequently publishes papers on computer vision and surveillance. In their research, they use 1x1 grids as a standard "Bag of Features" representation to analyze video data.
There are tutorials for whittling small projects, like an owl, starting from a 1x1 inch block of willow wood. 📄 Paper Crafts
