From e67283cadbfcc303a4303950f2e4e4886dfc4bcb Mon Sep 17 00:00:00 2001
From: murat <murat@muwat.org>
Date: Sat, 31 Jan 2026 17:31:03 +0300
Subject: [PATCH] optimization: filtering out dark pixels

---
 main.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/main.cpp b/main.cpp
index fc8ce84..8674d5c 100644
--- a/main.cpp
+++ b/main.cpp
@@ -105,6 +105,9 @@ int main(int argc, char *argv[]) {
     std::unordered_map<int, Bucket> hist;
 
     for (auto& p : samples) {
+        int brightness = p.r + p.g + p.b;
+        if (brightness < 60) continue;           //filtering out dark pixels
+
         int rq = p.r / 16;
         int gq = p.g / 16;
         int bq = p.b / 16;