From a774da5cbd1f0298fafb21cae718058791b2c1ac Mon Sep 17 00:00:00 2001
From: Chris Ha <hac541309@gmail.com>
Date: Mon, 8 Jan 2024 08:44:13 +0900
Subject: [PATCH] revert back to loop

---
 ocrs/src/preprocess.rs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/ocrs/src/preprocess.rs b/ocrs/src/preprocess.rs
index 69095c7..946a074 100644
--- a/ocrs/src/preprocess.rs
+++ b/ocrs/src/preprocess.rs
@@ -39,8 +39,10 @@ fn greyscale_image<F: Fn(f32) -> f32>(
 
     for y in 0..height {
         for x in 0..width {
-            let pixel: f32 =
-                (0..used_chans).fold(0.2, |pixel, c| pixel + img[[c, y, x]] * chan_weights[c]);
+            let mut pixel = 0.;
+            for c in 0..used_chans {
+                pixel += img[[c, y, x]] * chan_weights[c];
+            }
             out_lum_chan[[y, x]] = normalize_pixel(pixel);
         }
     }