From e05ec20e0678ee480afb4351c0372655998cfcd4 Mon Sep 17 00:00:00 2001
From: travail <sawa.tomoyuki@gmail.com>
Date: Fri, 30 Jan 2015 00:44:12 +0900
Subject: [PATCH] Tweak comments

---
 lib/PerceptualHash/Algorithm/AverageHash.php | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/lib/PerceptualHash/Algorithm/AverageHash.php b/lib/PerceptualHash/Algorithm/AverageHash.php
index a61a033..30607a3 100644
--- a/lib/PerceptualHash/Algorithm/AverageHash.php
+++ b/lib/PerceptualHash/Algorithm/AverageHash.php
@@ -20,24 +20,24 @@ class AverageHash implements Algorithm
             $resized, $resource, 0, 0, 0, 0,
             static::SIZE, static::SIZE, imagesx($resource), imagesy($resource));
 
-        // Create an array of gray-scale pixel value
+        // Create an array of gray-scaled pixel values.
         $pixels = array();
         for ($y = 0; $y < static::SIZE; $y++) {
             for ($x = 0; $x < static::SIZE; $x++) {
                 $rgb = imagecolorsforindex($resized, imagecolorat($resized, $x, $y));
-                $pixels[] = floor(($rgb['red'] + $rgb['green'] + $rgb['blue']) / 3);
+                $pixels[] = ($rgb['red'] + $rgb['green'] + $rgb['blue']) / 3;
             }
         }
 
         imagedestroy($resized);
 
-        // Calculate the average pixel value
-        $average = floor(array_sum($pixels) / count($pixels));
+        // Calculate a mean of gray-scaled pixel value.
+        $mean = array_sum($pixels) / count($pixels);
 
         $bin = '';
         $one = 1;
         foreach ($pixels as $pixel) {
-            $bin .= $pixel > $average ? 1 : 0;
+            $bin .= $pixel > $mean ? 1 : 0;
             $one = $one << 1;
         }