45 lines
1.6 KiB
Rust
45 lines
1.6 KiB
Rust
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use image;
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fn main() {
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let out_path = "/tmp/composite_output.png";
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let ref_path = "/home/hc/Pictures/_test_images/example3/Example3-mini.png";
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if !std::path::Path::new(out_path).exists() || !std::path::Path::new(ref_path).exists() {
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println!("Images not found.");
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return;
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}
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let out_img = image::open(out_path).unwrap().to_rgba8();
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let ref_img = image::open(ref_path).unwrap().to_rgba8();
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if out_img.width() != ref_img.width() || out_img.height() != ref_img.height() {
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println!("Dimensions differ: out={}x{}, ref={}x{}", out_img.width(), out_img.height(), ref_img.width(), ref_img.height());
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return;
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}
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let mut diffs = Vec::new();
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for y in 0..out_img.height() {
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for x in 0..out_img.width() {
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let p1 = out_img.get_pixel(x, y);
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let p2 = ref_img.get_pixel(x, y);
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let dr = (p1[0] as i32 - p2[0] as i32).abs();
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let dg = (p1[1] as i32 - p2[1] as i32).abs();
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let db = (p1[2] as i32 - p2[2] as i32).abs();
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let da = (p1[3] as i32 - p2[3] as i32).abs();
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let total = dr + dg + db + da;
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if total > 0 {
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diffs.push((x, y, p1.0, p2.0, total));
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}
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}
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}
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diffs.sort_by_key(|d| std::cmp::Reverse(d.4));
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println!("Total differing pixels: {} / {}", diffs.len(), out_img.width() * out_img.height());
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println!("\nTop 50 worst pixels:");
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for i in 0..50.min(diffs.len()) {
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let (x, y, p1, p2, total) = diffs[i];
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println!(" at ({:4}, {:4}): out={:?}, ref={:?}, sum_diff={}", x, y, p1, p2, total);
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}
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}
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