Sergey "Shnatsel" Davidoff

DEFLATE is hard but PNG filters aren't as scary as they sound

Recover partial list of Rust dependencies based on panic messages

5

When writing `cargo audit bin`, a dedicated vulnerability scanner for Rust binaries, I've found that when `cargo auditable` data is not available (which blint currently relies on, see #89), it's...

Decoding animated WebP is 4x slower than `libwebp-sys` + `webp-animation`

16

In image v0.25.4 and image-webp v0.2.0, decoding the attached animated WebP is 4x slower than using `libwebp-sys` + `webp-animation`: [sample.zip](https://github.com/user-attachments/files/17482915/sample.zip) ### image ```rust use std::error::Error; use image::{codecs::webp::WebPDecoder, AnimationDecoder, ImageReader}; fn...

Parallelization opportunities

2

Part of the gap observed in #119 is due to `webp-animation` using multi-threading. `libwebp` also has a multi-threading option for still images. But right now `image-webp` is single-threaded. I think...

Incorrect compositing for WebP with alpha

10

This happens in `image` from git on commit 5976c195939bfbede976fe1e0a80225d192a793c with `image-webp` v0.2.0 ## Expected `convert bug.webp[0] bug.png` produces an image that's fully transparent, other than the beetle:  ## Actual...

Decoded image appears pixelated

1

Found in image-webp v0.2.0 Input: [bsk.webp.gz](https://github.com/user-attachments/files/17400821/bsk.webp.gz) imagemagick result:  image-webp result:  Same versions and reproduction code as in https://github.com/image-rs/image-webp/issues/117 This happens on vibrant reds so...

Reddish color bleed on some WebP images

1

Found in image-webp v0.2.0 Input: [1600195945.webp.gz](https://github.com/user-attachments/files/17400798/1600195945.webp.gz) imagemagick result:  image-webp result:  Note the reddish area in the bottom right corner of the image-webp output. Same...

The `png` crate v0.18.x (currently in beta) added finer-grained compression controls: 1. [set_compression()](https://docs.rs/png/0.18.0-rc.2/png/struct.Encoder.html#method.set_compression) for a high-level, easy to use compression control 2. [set_deflate_compression](https://docs.rs/png/0.18.0-rc.2/png/struct.Encoder.html#method.set_deflate_compression) for more in-depth DEFLATE control 3. [set_filter](https://docs.rs/png/0.18.0-rc.2/png/struct.Encoder.html#method.set_filter)...

Exif metadata can contain information about the orientation in which a photo was taken, which is crucial to be able to display images correctly. Being able to write Exif metadata...

ICC profile read/write support

1

ICC profiles are important for color management, and being able to read them is crucial to be able to display them correctly, while being able to them is crucial to...