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0267c3d 'update regression tests to match hyab'
8816176 'make lab conversion parallel; use hyab'
This commit is contained in:
saji 2024-08-02 11:59:08 -05:00
parent 0267c3da19
commit 73c4d96577
3 changed files with 6 additions and 7 deletions
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1
Cargo.lock generated
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@ -1463,7 +1463,6 @@ dependencies = [
"mime",
"minijinja",
"palette",
"rayon",
"rusqlite",
"serde",
"strum",

1
Cargo.toml
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@ -16,7 +16,6 @@ linux-embedded-hal = { version = "0.4.0"}
mime = "0.3.17"
minijinja = "2.1.0"
palette = "0.7.6"
rayon = "1.10.0"
rusqlite = { version = "0.32.1", features = ["bundled"] }
serde = { version = "1.0.204", features = ["derive"] }
strum = { version = "0.26.3", features = ["derive"] }

11
src/dither.rs
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@ -6,7 +6,6 @@ use tracing::instrument;
use image::Rgb as imgRgb;
use palette::color_difference::{Ciede2000, HyAb};
use palette::{cast::FromComponents, IntoColor, Lab, Srgb};
use rayon::prelude::*;
#[derive(
strum::EnumString, strum::Display, Serialize, Deserialize, PartialEq, Eq, Debug, Clone,
@ -95,7 +94,7 @@ fn nearest_neighbor(input_color: Lab, palette: &[Lab]) -> (u8, Lab) {
.map(|(idx, p_color)| {
(
idx,
input_color.hybrid_distance(*p_color), // this is CIEDIE2000 based and highly accurate.
input_color.difference(*p_color), // this is CIEDIE2000 based and highly accurate.
input_color - *p_color,
)
})
@ -215,9 +214,11 @@ impl<'a> Ditherer for ErrorDiffusion<'a> {
// first, a view into the rgb components
let srgb = <&[Srgb<u8>]>::from_components(&**img);
let (xsize, ysize) = img.dimensions();
// our temporary buffer. we push the error here.
let mut temp_img: Vec<Lab> = srgb.par_iter().map(|p| p.into_format().into_color()).collect();
// our destination buffer.
let mut temp_img: Vec<Lab> = Vec::with_capacity((xsize * ysize) as usize);
for pix in srgb {
temp_img.push(pix.into_format().into_color());
}
let lab_palette: Vec<Lab> = output.palette.iter().map(|c| Lab::from_color(*c)).collect();
// TODO: rework this to make more sense.