The lesson on laser scanning introduces a powerful tool for accurately capturing 3D data, particularly for golf greens. Traditional methods like GPS proved less accurate, while modern laser scanners can gather millions of data points in just minutes, accurate to a couple of millimeters. The process involves setting up a laser scanner next to the green, which shoots out laser points and collects them in 3D space. Raw data appears as a series of points that need processing into a 3D model, eventually leading to the creation of detailed, textured golf green models. These models can display contour maps and slope information, aiding golfers in understanding the green's topography. The lesson also touches on the significance of contour lines, explaining how they represent elevation changes on the green and their spacing indicates the steepness of the terrain.

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