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-rw-r--r--src/pure_embedders.rs91
1 files changed, 0 insertions, 91 deletions
diff --git a/src/pure_embedders.rs b/src/pure_embedders.rs
deleted file mode 100644
index 09c8321..0000000
--- a/src/pure_embedders.rs
+++ /dev/null
@@ -1,91 +0,0 @@
-use anyhow::{bail, Result};
-use serde::{Deserialize, Serialize};
-use std::path::Path;
-
-use crate::{EmbedderT, MetricElem};
-
-pub(crate) struct BrightnessEmbedder;
-impl EmbedderT for BrightnessEmbedder {
- type Embedding = f64;
- const NAME: &'static str = "Brightness";
-
- fn embed(&self, path: &Path) -> Result<f64> {
- let im = image::open(path)?;
- let num_bytes = 3 * (im.height() * im.width());
-
- if num_bytes == 0 {
- bail!("Encountered NaN brightness, due to an empty image");
- }
-
- Ok(im.to_rgb8().iter().map(|e| *e as u64).sum::<u64>() as f64 / num_bytes as f64)
- }
-}
-
-#[repr(transparent)]
-#[derive(Serialize, Deserialize)]
-pub(crate) struct Hue(f64);
-impl MetricElem for Hue {
- fn dist(&self, b: &Hue) -> f64 {
- let d = self.0.dist(&b.0);
- d.min(6. - d)
- }
-}
-pub(crate) struct HueEmbedder;
-impl EmbedderT for HueEmbedder {
- type Embedding = Hue;
- const NAME: &'static str = "Hue";
-
- fn embed(&self, path: &Path) -> Result<Hue> {
- let im = image::open(path)?;
- let num_pixels = im.height() * im.width();
- let [sr, sg, sb] = im
- .to_rgb8()
- .pixels()
- .fold([0, 0, 0], |[or, og, ob], n| {
- let [nr, ng, nb] = n.0;
- [or + nr as u64, og + ng as u64, ob + nb as u64]
- })
- .map(|e| e as f64 / 255. / num_pixels as f64);
-
- let hue = if sr >= sg && sr >= sb {
- (sg - sb) / (sr - sg.min(sb))
- } else if sg >= sb {
- 2. + (sb - sr) / (sg - sr.min(sb))
- } else {
- 4. + (sr - sg) / (sb - sr.min(sg))
- };
-
- if hue.is_nan() {
- bail!("Encountered NaN hue, possibly because of a colorless or empty image");
- }
-
- Ok(Hue(hue))
- }
-}
-
-impl MetricElem for (f64, f64, f64) {
- fn dist(&self, o: &(f64, f64, f64)) -> f64 {
- let (dr, dg, db) = ((self.0 - o.0), (self.1 - o.1), (self.2 - o.2));
- (dr * dr + dg * dg + db * db).sqrt()
- }
-}
-pub(crate) struct ColorEmbedder;
-impl EmbedderT for ColorEmbedder {
- type Embedding = (f64, f64, f64);
- const NAME: &'static str = "Color";
-
- fn embed(&self, path: &Path) -> Result<(f64, f64, f64)> {
- let im = image::open(path)?;
- let num_pixels = im.height() * im.width();
- let [sr, sg, sb] = im
- .to_rgb8()
- .pixels()
- .fold([0, 0, 0], |[or, og, ob], n| {
- let [nr, ng, nb] = n.0;
- [or + nr as u64, og + ng as u64, ob + nb as u64]
- })
- .map(|e| e as f64 / num_pixels as f64);
-
- Ok((sr, sg, sb))
- }
-}