Bilateral filter
lastmod 2024-05-10created 2024-05-102 edits
A bilateral filter is a non-linear, edge-preserving, and noise-reducing smoothing filter for images. It replaces the intensity of each pixel with a weighted average of intensity values from nearby pixels. This weight can be based on a Gaussian distribution. Crucially, the weights depend not only on Euclidean distance of pixels, but also on the radiometric differences (e.g., range differences, such as color intensity, depth distance, etc.). This preserves sharp edges.
A bilateral filter is a non-linear, edge-preserving, noise-reducing smoothing filter for images. It replaces the intensity of each pixel with a weighted average of the intensity values of surrounding pixels. This weight can be based on a Gaussian distribution.