Smoothing is a digital image editing technique that works by averaging pixels with their neighbouring pixels to reduce abrupt tonal transitions and soften the appearance of detail within an image. This process lowers contrast between adjacent pixels, which can create a softer, less defined look and simulate the appearance of an image being slightly out of focus. It is commonly applied through blur or softening filters in photo editing software.
Smoothing is often used by photographers and designers to reduce digital noise, soften skin tones in portrait retouching, and minimise imperfections or harsh textures within an image. When applied carefully, it can improve the overall visual appearance and produce a more polished finish. However, excessive smoothing may remove important detail and texture, resulting in an unnatural or overly processed image, so it should be used with precision to maintain realism and image quality.