Spatial frequency filtering

Spatial frequency filtering is a technique used in image processing to emphasize or reduce certain details based on how often they occur across an image. High spatial frequencies correspond to fine details and sharp edges, while low frequencies relate to broad, smooth regions. By applying filters, we can enhance clarity by sharpening details or remove noise and blurriness by smoothing areas. This process helps improve image quality or extract specific information, making it useful in various fields like photography, medical imaging, and computer vision. Essentially, it's a way to selectively highlight or diminish features based on their size and detail level.