From 3e46f1455486d2cde7efd6b791bb037e17554213 Mon Sep 17 00:00:00 2001
From: Nhowka <menhowca@gmail.com>
Date: Thu, 19 Jan 2017 17:16:55 -0200
Subject: [PATCH 1/2] Single use of GetPixel per actual pixel (#1)

GetPixel is a rather expensive function, so calling it once per pixel instead of once per pixel color is desirable.
---
 Initialize.cs | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/Initialize.cs b/Initialize.cs
index 7d9cf5f..f09fa4c 100644
--- a/Initialize.cs
+++ b/Initialize.cs
@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
@@ -101,9 +101,10 @@ private static double GetWeight(char c, SizeF size)
             {
                 for (int j = 0; j < btm.Height; j++)
                 {
-                    totalsum = totalsum + (btm.GetPixel(i, j).R 
-                                        + btm.GetPixel(i, j).G 
-                                        + btm.GetPixel(i, j).B)/3;
+                    Color pixel = btm.GetPixel(i, j);
+                    totalsum = totalsum + (pixel.R 
+                                        + pixel.G 
+                                        + pixel.B)/3;
                 }
             }
             // Weight = (sum of (R+G+B)/3 for all pixels in image) / Area. (Where Area = Width*Height )

From a008b550e6271e8d7c2a056e10be7c736a1dcd5b Mon Sep 17 00:00:00 2001
From: Nhowka <menhowca@gmail.com>
Date: Thu, 19 Jan 2017 17:17:36 -0200
Subject: [PATCH 2/2] Single use of GetPixel per actual pixel (#2)

GetPixel is a rather expensive function, so calling it once per pixel instead of once per pixel color is desirable.
---
 HelperMethods.cs | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/HelperMethods.cs b/HelperMethods.cs
index bae111e..5ab0338 100644
--- a/HelperMethods.cs
+++ b/HelperMethods.cs
@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
@@ -47,9 +47,10 @@ public static Image Convert2ASCII(Image BW_Image, List<WeightedChar> characters,
                 List<string> RowText = new List<string> { };
                 for (int i=0; i <BW_Image.Width;i++) // COLUMN
                 {
-                    double targetvalue =  (BlackAndWhite.GetPixel(i, j).R 
-                                         + BlackAndWhite.GetPixel(i, j).G 
-                                         + BlackAndWhite.GetPixel(i, j).B)/3;
+                    Color pixel = BlackAndWhite.GetPixel(i, j);
+                    double targetvalue =  (pixel.R 
+                                         + pixel.G 
+                                         + pixel.B)/3;
 
                     WeightedChar closestchar = characters.Where(t=>Math.Abs(t.Weight-targetvalue)==characters.Min(e => Math.Abs(e.Weight - targetvalue))).FirstOrDefault();
                     RowText.Add(closestchar.Character);
@@ -138,8 +139,8 @@ public static Bitmap Grayscale(Image image)
                 for (int j = 0; j < btm.Height; j++)
                 {
                     // Visit https://en.wikipedia.org/wiki/Grayscale for 0.3, 0.59 & 0.11 values
-
-                    int ser = (int)(btm.GetPixel(i, j).R*0.3 + btm.GetPixel(i, j).G*0.59 + btm.GetPixel(i, j).B*0.11);
+                    Color pixel = btm.GetPixel(i, j);
+                    int ser = (int)(pixel.R*0.3 + pixel.G*0.59 + pixel.B*0.11);
                     btm.SetPixel(i, j, Color.FromArgb(ser, ser, ser));
                 }
             }