Tag
“lanczos”
3 posts
Tutorials··7 min readFree 4K Video Upscaling in Your Browser — No Upload, No Software
How to upscale video to 4K resolution for free using AI and Lanczos algorithms, entirely in your browser. What quality to expect, and when it is worth doing.
Technical Deep Dives··6 min readThe Math Behind Upscaling a 176px Thumbnail to 2048px
A fixed "2×" turns 176px into a still-tiny 352px. Real upscaling of small inputs needs a pre-scale plan and cascaded passes. The arithmetic we use to get a thumbnail to a usable size.
Technical Deep Dives··8 min readAI Image Upscaling: Lanczos vs. Swin2SR vs. Real-ESRGAN — Which Is Best?
A practical comparison of three upscaling approaches — classic Lanczos interpolation, transformer-based Swin2SR, and GAN-based Real-ESRGAN. When each method wins, what to expect on different content types, and how to choose.