Nearest neighbor interpolation

Nearest neighbor interpolation is a method used to estimate values at new points based on existing data points. It works by looking for the closest known data point to the new location and assigning its value to the new point. This technique is straightforward and quick, making it useful in various fields like image processing and geographic information systems. However, it can lead to abrupt changes in values, as it relies solely on the nearest data point, rather than considering the surrounding data for a smoother transition.