Speckle Noise

Speckle noise is a granular interference pattern that appears in images, especially those captured with laser or radar systems. It occurs when coherent waves, like laser beams, scatter off rough surfaces and then combine, creating small, random variations in brightness. This results in a grainy or speckled appearance that can obscure details and reduce image clarity. Speckle noise is a natural consequence of the physics involved in wave interactions and is common in medical imaging, remote sensing, and industrial inspections. While it can be reduced through processing techniques, completely eliminating it without losing information can be challenging.