Added version in TOML, psnr with and without alpha
This commit is contained in:
parent
0d9946dc31
commit
13e7973e70
|
@ -4,8 +4,8 @@ version = "0.1.0"
|
|||
authors = ["Thomas Forgione <thomas@tforgione.fr>"]
|
||||
|
||||
[dependencies]
|
||||
image = "*"
|
||||
lazy_static = "*"
|
||||
image = "0.17.0"
|
||||
lazy_static = "0.2.11"
|
||||
|
||||
[[bin]]
|
||||
name = "psnr"
|
||||
|
|
112
src/lib.rs
112
src/lib.rs
|
@ -2,7 +2,7 @@
|
|||
extern crate lazy_static;
|
||||
extern crate image;
|
||||
|
||||
use image::{Pixel, GenericImage, ImageResult, Rgba};
|
||||
use image::{Pixel, GenericImage, ImageResult, Rgba, FilterType};
|
||||
|
||||
lazy_static! {
|
||||
/// This values is 20 * log10(255)
|
||||
|
@ -16,6 +16,94 @@ pub fn mse_color<P: Pixel<Subpixel=u8>, T: GenericImage<Pixel=P>>(img: &T, color
|
|||
|
||||
let mut mse = 0.0;
|
||||
|
||||
for x in 0 .. img.dimensions().0 {
|
||||
for y in 0 .. img.dimensions().1 {
|
||||
|
||||
let p1 = img.get_pixel(x, y).to_rgba();
|
||||
|
||||
let dx = p1.data[0] as f64 - color.data[0] as f64;
|
||||
let dy = p1.data[1] as f64 - color.data[1] as f64;
|
||||
let dz = p1.data[2] as f64 - color.data[2] as f64;
|
||||
let da = p1.data[3] as f64 - color.data[3] as f64;
|
||||
|
||||
let dx = dx * dx;
|
||||
let dy = dy * dy;
|
||||
let dz = dz * dz;
|
||||
let da = da * da;
|
||||
|
||||
mse += dx + dy + dz + da;
|
||||
}
|
||||
}
|
||||
|
||||
mse / (img.dimensions().0 * img.dimensions().1 * 4) as f64
|
||||
}
|
||||
|
||||
/// Compute a MSE between two images.
|
||||
///
|
||||
/// Will panic an error if the two images don't have the same size.
|
||||
pub fn mse<P1: Pixel<Subpixel=u8>, T1: GenericImage<Pixel=P1>, P2: Pixel<Subpixel=u8>, T2: GenericImage<Pixel=P2>>(img1: &T1, img2: &T2) -> f64 {
|
||||
|
||||
assert_eq!(img1.dimensions(), img2.dimensions());
|
||||
|
||||
let mut mse = 0.0;
|
||||
|
||||
for x in 0 .. img1.dimensions().0 {
|
||||
for y in 0 .. img1.dimensions().1 {
|
||||
|
||||
let p1 = img1.get_pixel(x, y).to_rgba();
|
||||
let p2 = img2.get_pixel(x, y).to_rgba();
|
||||
|
||||
let dx = p1.data[0] as f64 - p2.data[0] as f64;
|
||||
let dy = p1.data[1] as f64 - p2.data[1] as f64;
|
||||
let dz = p1.data[2] as f64 - p2.data[2] as f64;
|
||||
let da = p1.data[3] as f64 - p2.data[3] as f64;
|
||||
|
||||
let dx = dx * dx;
|
||||
let dy = dy * dy;
|
||||
let dz = dz * dz;
|
||||
let da = da * da;
|
||||
|
||||
mse += dx + dy + dz + da;
|
||||
}
|
||||
}
|
||||
|
||||
mse / (img1.dimensions().0 * img1.dimensions().1 * 4) as f64
|
||||
}
|
||||
|
||||
/// Resizes img1 to the size of img2 and then compute the MSE between the images.
|
||||
pub fn mse_resized<P: 'static + Pixel<Subpixel=u8>, T: 'static + GenericImage<Pixel=P>>(img1: &T, img2: &T, filter: FilterType) -> f64 {
|
||||
|
||||
let img1 = image::imageops::resize(img1, img2.width(), img2.height(), filter);
|
||||
mse(&img1, img2)
|
||||
|
||||
}
|
||||
|
||||
/// Compute the PSNR from the MSE.
|
||||
/// Returns 10 * log10(255^2) - 10 * log10(mse)
|
||||
pub fn mse_to_psnr(mse: f64) -> f64 {
|
||||
*TWENTY_LOG10_MAX - 10.0 * mse.log10()
|
||||
|
||||
}
|
||||
|
||||
/// Computes the PSNR between two images of the same sizes.
|
||||
pub fn psnr<P: Pixel<Subpixel=u8>, T: GenericImage<Pixel=P>>(img1: &T, img2: &T) -> f64 {
|
||||
*TWENTY_LOG10_MAX - 10.0 * mse(img1, img2).log10()
|
||||
}
|
||||
|
||||
/// Computes the PSNR between two images of the same size from their paths.
|
||||
pub fn psnr_files(path1: &str, path2: &str) -> ImageResult<f64> {
|
||||
let img1 = image::open(path1)?;
|
||||
let img2 = image::open(path2)?;
|
||||
Ok(psnr(&img1, &img2))
|
||||
}
|
||||
|
||||
/// Compute a MSE between an image and its color.
|
||||
///
|
||||
/// Will panic an error if the two images don't have the same size.
|
||||
pub fn mse_color_without_alpha<P: Pixel<Subpixel=u8>, T: GenericImage<Pixel=P>>(img: &T, color: &Rgba<u8>) -> f64 {
|
||||
|
||||
let mut mse = 0.0;
|
||||
|
||||
for x in 0 .. img.dimensions().0 {
|
||||
for y in 0 .. img.dimensions().1 {
|
||||
|
||||
|
@ -35,10 +123,11 @@ pub fn mse_color<P: Pixel<Subpixel=u8>, T: GenericImage<Pixel=P>>(img: &T, color
|
|||
|
||||
mse / (img.dimensions().0 * img.dimensions().1 * 3) as f64
|
||||
}
|
||||
|
||||
/// Compute a MSE between two images.
|
||||
///
|
||||
/// Will panic an error if the two images don't have the same size.
|
||||
pub fn mse<P: Pixel<Subpixel=u8>, T: GenericImage<Pixel=P>>(img1: &T, img2: &T) -> f64 {
|
||||
pub fn mse_without_alpha<P1: Pixel<Subpixel=u8>, T1: GenericImage<Pixel=P1>, P2: Pixel<Subpixel=u8>, T2: GenericImage<Pixel=P2>>(img1: &T1, img2: &T2) -> f64 {
|
||||
|
||||
assert_eq!(img1.dimensions(), img2.dimensions());
|
||||
|
||||
|
@ -65,19 +154,22 @@ pub fn mse<P: Pixel<Subpixel=u8>, T: GenericImage<Pixel=P>>(img1: &T, img2: &T)
|
|||
mse / (img1.dimensions().0 * img1.dimensions().1 * 3) as f64
|
||||
}
|
||||
|
||||
/// Compute the PSNR from the MSE.
|
||||
/// Returns 10 * log10(255^2) - 10 * log10(mse)
|
||||
pub fn psnr_from_mse(mse: f64) -> f64 {
|
||||
*TWENTY_LOG10_MAX - 10.0 * mse.log10()
|
||||
/// Resizes img1 to the size of img2 and then compute the MSE between the images.
|
||||
pub fn mse_resized_without_alpha<P: 'static + Pixel<Subpixel=u8>, T: 'static + GenericImage<Pixel=P>>(img1: &T, img2: &T, filter: FilterType) -> f64 {
|
||||
|
||||
let img1 = image::imageops::resize(img1, img2.width(), img2.height(), filter);
|
||||
mse_without_alpha(&img1, img2)
|
||||
|
||||
}
|
||||
|
||||
pub fn psnr<P: Pixel<Subpixel=u8>, T: GenericImage<Pixel=P>>(img1: &T, img2: &T) -> f64 {
|
||||
*TWENTY_LOG10_MAX - 10.0 * mse(img1, img2).log10()
|
||||
/// Computes the PSNR between two images of the same sizes.
|
||||
pub fn psnr_without_alpha<P: Pixel<Subpixel=u8>, T: GenericImage<Pixel=P>>(img1: &T, img2: &T) -> f64 {
|
||||
*TWENTY_LOG10_MAX - 10.0 * mse_without_alpha(img1, img2).log10()
|
||||
}
|
||||
|
||||
pub fn psnr_files(path1: &str, path2: &str) -> ImageResult<f64> {
|
||||
/// Computes the PSNR between two images of the same size from their paths.
|
||||
pub fn psnr_files_without_alpha(path1: &str, path2: &str) -> ImageResult<f64> {
|
||||
let img1 = image::open(path1)?;
|
||||
let img2 = image::open(path2)?;
|
||||
Ok(psnr(&img1, &img2))
|
||||
Ok(psnr_without_alpha(&img1, &img2))
|
||||
}
|
||||
|
|
Loading…
Reference in New Issue