Gaussian Blur

An image processing technique that smooths an image by averaging pixel values using a Gaussian (bell-curve) weighted function, creating a soft, out-of-focus appearance. In video accessibility, Gaussian blur is applied to video backgrounds to reduce visual distractions while preserving a sense of the original environment. The blur intensity can be adjusted—light blur maintains some context, while heavy blur approaches the effect of complete background removal. ADHD viewers generally preferred moderate blur that reduced distraction without completely eliminating spatial awareness.