/en/tags/mathematical-modeling/Recent content in Mathematical Modeling on Mi&Bee BlogHugo -- gohugo.ioen蓝宝石的傻话Fri, 05 Jun 2026 10:00:00 +0800/en/posts/physical-world/image-degradation-model/Fri, 05 Jun 2026 10:00:00 +0800/en/posts/physical-world/image-degradation-model/<h2 id="why-do-photos-get-blurry">Why Do Photos Get Blurry?</h2> <p>Scrolling through your phone gallery, you will always encounter such regrets: at the moment you pressed the shutter, you captured a beautiful moment, but the photo turned out blurry — maybe due to shaky hands, insufficient light, or the subject moving too fast. Old photos are even worse — the passage of time makes memories from back then become fuzzy.</p> <p>Blur is not accidental. In the world of digital imaging, every photo undergoes a complex transformation process from the real scene to digital signals. Light passes through the lens, falls on the sensor, gets recorded by electronic systems — every link may introduce &ldquo;degradation.&rdquo; Understanding how these degradations occur is the first step to studying image restoration from a mathematical perspective.</p>