The first assignment for the class 3d sensing & visualization taught by Kyle McDonald is to make a 3d scanner.
Rose and I made a pickle scanner.
how it works:
a pickle is submerged fully in water in a box
the water is dyed with black ink
a cover made of cardboard has a 12 x 9 grid drawn on it. A hole is poked through each square on the grid
long sticks are inserted vertically down each hole on the grid, wherever it hits the pickle underneath, it doesn’t reach the bottom and hence sticks out more than the other sticks, thus creating a shape of the pickle above the grid cover
after a while, sticks are taken out, and readings are made on how much of the stick is colored with ink
these are the depth readings of the pickle
combined with the grid coordinates (x and y) we have 3 D point cloud data
visualizations in processing
it’s a pickle
other interesting shapes formed by imperfect data: