Image Scaling: Resizing Pixels Without Ruining Them
Image scaling isn't just stretching a picture; it's inventing or discarding pixel data. It's used everywhere from displaying thumbnails to making 1080p video fit a 4K screen.
Image scaling is the art of resizing an image by inventing or discarding pixels. Upscaling creates new pixels to enlarge an image, while downscaling combines them to shrink it. This happens constantly when generating web thumbnails or upscaling video to a higher-resolution screen. The common footgun is picking the wrong interpolation algorithm: using 'nearest-neighbor' for photos creates blocky results, while using a 'bicubic' method on pixel art makes it blurry and loses sharpness.
Read the original → Wikipedia: Image scaling
- #computer vision
- #graphics
- #images
- #algorithms
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