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POImage processing code help - C#
 

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  1. POImage processing code help - C#
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    <p>Alright y'all, time for more n00b help.<br> I've been working on this code in C# (Mono, to be exact). It is designed to take an image, break it down pixel by pixel, and write R,G, and B values as color coordinates to a text file.<br> Problem is, I don't get any processing. I simply get a red 0 (the percent function right above the for() loops, and an empty file. No text/coordinates generated. I'll post the console output below the code itself for clarity.</p> <pre><code>using System; using System.Drawing; using System.Drawing.Imaging; namespace Image_Interpreter_I { class MainClass { public static void Main (string[] args) { Console.WriteLine ("Enter filepath for bitmap image"); Console.ForegroundColor = ConsoleColor.Blue; string filepath = Console.ReadLine (); Console.ResetColor(); Bitmap image1 = new Bitmap(System.Drawing.Image.FromFile(filepath, true)); Console.WriteLine ("Enter filepath for file interpretation output"); Console.ForegroundColor = ConsoleColor.Blue; string filepath2 = Console.ReadLine(); Console.ResetColor(); int i; i = 1; int ImW, ImH; string ImWstr, ImHstr; Console.WriteLine ("Enter width of image:"); Console.ForegroundColor = ConsoleColor.Blue; ImWstr = Console.ReadLine (); Console.ResetColor (); ImW = Convert.ToInt16 (ImWstr); Console.WriteLine ("Enter height of image:"); Console.ForegroundColor = ConsoleColor.Blue; ImHstr = Console.ReadLine (); ImH = Convert.ToInt16 (ImHstr); decimal percent; percent = (i / (ImH * ImW)) * 100; Console.ForegroundColor = ConsoleColor.Red; Console.WriteLine (percent); Console.ResetColor (); for (int y = 1; y &lt;= ImH; y++) { for (int x = 1; x &lt;= ImW; x++) { Color pixelColor = image1.GetPixel(x,y); byte r = pixelColor.R; byte g = pixelColor.G; byte b = pixelColor.B; string pixData = String.Format ("({0},{1},{2}", new object[] {r, g, b}); using (System.IO.StreamWriter file = new System.IO.StreamWriter(filepath2)) { file.WriteLine(pixData); } } } i++; } } } </code></pre> <p>Console Output:</p> <blockquote> <p>Enter filepath for bitmap image<br> /Users/user0/Desktop/IMG_1528.JPG<br> Enter filepath for file interpretation output<br> /Users/user0/Desktop/imageData.txt<br> Enter width of image:<br> 2448 Enter height of image: 3264 0</p> </blockquote>
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    1. USMike 'Pomax' Kamermans
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    1. COMy suspicion is that when you do `System.IO.StreamWriter file = new System.IO.StreamWriter(filepath2)` in the middle of the for loop, you attempt to open a file for writing that is already open exclusively by a different handle. If so, solution: Open it writing only once and exactly once, in a using outside of both for loops. If that doesn't work, try attaching a debugger and seeing what it gets stuck on.
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      1. USPatashu
 

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