All articles tagged with #checkerboard
A NASA astronaut captured a striking satellite image of a checkerboard pattern in Idaho's forests, created by 19th-century land management practices that involved alternating areas of timber harvesting and regeneration, with seasonal snow enhancing the pattern's visibility from space.
To calibrate a thermal camera for machine vision tasks, a geometric calibration is needed to correct for lens distortion. Generating a geometrically-regular thermal pattern is key to this process, which can be achieved using methods such as a grid of nichrome wires, discs of cold aluminium, or a simple checkerboard. Mathematical techniques are then used for calibration based on these patterns.