output fixes

src/bin/dctfilename.rs

@@ -2,6 +2,7 @@
 use image_similarity::descriptors::{DCT, Descriptor};
 use std::env;
 use base64::{engine::general_purpose::URL_SAFE_NO_PAD, Engine as _};
+use log::debug;
 
 struct Cfg {
     path: String
@@ -31,7 +32,8 @@ fn main() {
     let img = image::open(cfg.path)
         .expect("Unable to open file");
     let phash: u64 = desc.describe(img);
-    println!("{phash}\n{phash:b}");
+    debug!("Phash integer:\n{phash}");
+    debug!("Phash binary:\n{phash:b}");
     let output = URL_SAFE_NO_PAD.encode(phash.to_be_bytes());
     println!("{output}")
 }

src/bin/experiment.rs

@@ -3,7 +3,8 @@ use std::collections::HashMap;
 use std::fs;
 
 fn main() {
-    //Init all descriptors:
+    env_logger::init();
+
     let desc = DCT::new();
 
     //Initialize hashmap, empty or from cached file:

src/descriptors/dct.rs

@@ -1,12 +1,13 @@
 use image::{save_buffer, GenericImageView};
 use std::f64::consts::{PI, SQRT_2};
-use crate::descriptors::{Descriptor, print_matrix, DCT};
+use crate::descriptors::{Descriptor, DCT, print_matrix};
+use log::debug;
 
 
 impl DCT {
     /// Returns a new DCT instance with a base quality DCT matrix.
     pub fn new() -> DCT {
-        let base_quantization_matrix: [u8; 64] = [
+        let quantization_matrix: [u8; 64] = [
             16, 11, 10, 16, 24, 40, 51, 61,
             12, 12, 14, 19, 26, 58, 60, 55,
             14, 13, 16, 24, 40, 57, 69, 56,
@@ -16,7 +17,7 @@ impl DCT {
             49, 64, 78, 8, 10, 12, 12, 101,
             72, 92, 95, 9, 11, 10, 103, 99,
         ];
-        DCT { quantization_matrix: base_quantization_matrix }
+        DCT { quantization_matrix }
     }
 
     // Builds DCT with given quality value
@@ -37,9 +38,7 @@ impl DCT {
         self
     }
 
-	pub fn dct(&self, img: image::DynamicImage) -> [f64; 64] {
+    fn dct(&self, img: image::DynamicImage) -> [f64; 64] {
-        //let qmatrix = self.quantization_matrix(self.quality);
-        //println!("Q-{} quantization matrix:\n{}", self.quality, print_matrix(qmatrix));
         let mut dct_values: [f64; 64] = [0.0; 64];
         img.save("resize.png").expect("Error saving file");
         for u in 0..8 {
@@ -65,13 +64,12 @@ impl DCT {
                         (y*v*PI/16.0).cos()
                 }
                 dct_values[k] = alpha * sum;
-                //println!{"{}", dct_values[k]}
             }
         }
         dct_values
 	}
 
-	pub fn idct(&self, dct_values: [f64; 64]) -> [u8; 64] {
+	fn idct(&self, dct_values: [f64; 64]) -> [u8; 64] {
         let mut reconstructed: [u8; 64] = [0; 64];
         for k in 0..64  {
             let x = (k%8) as f64;
@@ -107,24 +105,24 @@ impl Descriptor for DCT {
     fn describe(&self, img: image::DynamicImage) -> u64 {
         let img = self.resize(img);
         let mut dct_values = self.dct(img);
-        println!("DCT-coefficients:\n {}", print_matrix(dct_values));
+        debug!("DCT-coefficients:\n {}", print_matrix(dct_values));
 
         // Quantization:
-        println!("Using quantization matrix:\n{}", print_matrix(self.quantization_matrix));
+        debug!("Using quantization matrix:\n{}", print_matrix(self.quantization_matrix));
         for i in 0..64 {
             dct_values[i] = (dct_values[i] / self.quantization_matrix[i] as f64).round();
         }
-        println!("DCT-coefficients, quantized:\n {}", print_matrix(dct_values));
+        debug!("DCT-coefficients, quantized:\n {}", print_matrix(dct_values));
 
         // De-quantization:
         for i in 0..64 {
             dct_values[i] = dct_values[i] * self.quantization_matrix[i] as f64;
         }
-        println!("DCT-coefficients, de-quantized:\n {}", print_matrix(dct_values));
+        debug!("DCT-coefficients, de-quantized:\n {}", print_matrix(dct_values));
 
         // Reconstruction original pixel values:
 		let reconstructed = self.idct(dct_values);
-        println!("Reconstructed pixel values:\n{}", print_matrix(reconstructed));
+        debug!("Reconstructed pixel values:\n{}", print_matrix(reconstructed));
 
         save_buffer(
             "reconstructed.png",

src/store.rs

@@ -20,7 +20,7 @@ impl DescriptorStore {
 			Ok(f) => rmp_serde::from_slice(&f).unwrap(),
 			Err(_e) => HashMap::with_capacity(count),
 		};
-		DescriptorStore { map: map }
+		DescriptorStore { map }
 	}
 
 	/// Returns true iff the store already contains the key