ssimulacra2
SSIMULACRA 2. Perceptual metric. (by cloudinary)
unpic-placeholder
Pure-CSS image placeholders (by ascorbic)
| ssimulacra2 | unpic-placeholder | |
|---|---|---|
| 5 | 1 | |
| 136 | 158 | |
| 3.7% | - | |
| 3.1 | 4.5 | |
| about 2 months ago | about 1 year ago | |
| C++ | TypeScript | |
| BSD 3-clause "New" or "Revised" License | MIT License |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
ssimulacra2
Posts with mentions or reviews of ssimulacra2.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2024-02-19.
-
Extreme Video Compression
https://github.com/cloudinary/ssimulacra2?tab=readme-ov-file... shows a higher correlation with human responses across 4 different datasets and correlation metrics for 1
-
H265 vs AV1 - Experiments in Python
Very well written. As others have suggested, you should do a followup using modern perceptual quality metrics like VMAF and ssimulacra2.
-
A better compact image placeholder hash
I was thinking about that too. Can't answer the question, but I did come across this just the other day: https://github.com/cloudinary/ssimulacra2 Supposedly good for comparing image similarity. Might depend on your use-case, I think it's geared towards image quality moreso than similar photos.
-
Unusually good compression ratio - Sanity Check
That's the kind of feedback I was looking for, thanks. I usually go by eye, but at 14:1, I was expecting a blurry artefact-ridden mess, and it just didn't look all that bad at first blush.... I'll definitely check out ssimulacra2, thanks for the suggestion. I also need to sit down and do some proper pixel-peeping on a better screen... I think my monitor falls into the 'HD-aren't' class of HDR displays, so I'm likely missing detail somewhere. My purpose is archival, I want to preserve quality but not needlessly waste drive space on less efficient codecs. I'm not concerned by the resultant bit rate, so long as it has improved compression efficiency over the original.
-
examples of hardware vs software AV1 encodes?
The fork to build - rust-av/ssimulacra2_bin | original release (works on images only) with a lot of info about the metric - cloudinary/ssimulacra2
unpic-placeholder
Posts with mentions or reviews of unpic-placeholder.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-03-22.
-
A better compact image placeholder hash
Small heads-up, you might want to look at the PRs (I've opened the single open PR) :D
Take a look here: https://github.com/ascorbic/unpic-placeholder. Recently created by a Principal Engineer of Netlify, which kind of server-side-renders BlurHash images, so that they don't tax the mainthread. Maybe the same can be done for ThumbHash (I've opened an issue in that repo to discuss it)
What are some alternatives?
When comparing ssimulacra2 and unpic-placeholder you can also consider the following projects:
vmaf - Perceptual video quality assessment based on multi-method fusion.
lqip-modern - Modern approach to Low Quality Image Placeholders (LQIP) using webp and sharp.
video-compare - Split screen video comparison tool using FFmpeg and SDL2
Primitive Pictures - Reproducing images with geometric primitives.
ssimulacra2_bin - Binary interface for the ssimulacra2 Rust port
UTEX.js - A fast tiny tool for working with compressed textures