Viewing profile — homm

> MozJPEG use a lower value in the first position of the quantization just like this article suggests It has lower value in the first position of the base table, i.e. the table whi…

It's for free.

The simple question: if all the existing formats already solve the image compression problem, why a new image formats (WebP, HEIC, AVIF, JPEG XL etc) appears?

It was not badly picked for regular use cases. Just, before the retina displays appeared no one was interested in extreme low bitrate and no one knew that different artifacts had d…

This picture from great site with collections of high-resolution photos under free license https://unsplash.com/photos/vXpcpTl2Tt4 Bu the way, thank you fo pointing out that this i…

Each resampling algorithm will internally produce some high-precision result before cutting it to 8 bits. For Pillow-SIMD it is 32-bit integers. Currently, I haven't considered dit…

Well, 3680x2456 / 0.06 seconds ≈ 150 Mp/s or 75 Mp/s/per core. Pillow-SIMD's current implementation runs on ≈ 700 Mp/s/pre core for bicubic (which is closer to this implementation)…

1. asm.js is dead in favor of WebAssembly 2. I need a solution for most browsers on most platforms, not for some very recent and most popular

Color space conversion is a hard topic in terms of performance. First of all, not all images are stored in sRGB. Most of them have another color profiles (such as P3 or ProPhoto). …

No. As I can see, no one uses FFT for image scaling. I guess because of it much slower.

It's exactly what my previous article "Image resize in browsers is broken" is about ) https://blog.uploadcare.com/image-resize-in-browsers-is-brok... It originally was written two …

Opencv doesn't provide convolution-based resampling. Only supersampling with INTER_AREA flag, which is comparable to BICUBIC for high-ratio downscaling. So, such statements don't m…