Just my ramblings on technology and software development
The number of pixels we captured in 4 days of flying drones over some of the countries best golf courses: 99,014,934,528 I recently had the opportunity to participate in an exciting project to prototype tools that could improve the process of … Read More »
Microsoft Cognitive Services API’s have a variety of useful functions available. Bing Image Search is an API which has been around for a while, but was recently revamped and merged into Cognitive Services. Before you can do anything with the … Read More »
Azure storage is an excellent option for storing assets for your web application (or even your entire static web application), but it is often preferable to have this data delivered to the browser using HTTP Compression to reduce file size and improve performance. Here we introduce a new utility to automate managing HTTP Compression settings for your blobs.
React-Leaflet is a fantastic way to use a leaflet map in a ReactJS application, however it is not obvious how to extend the tile layer to let you use the Bing leaflet plugin with it. Here is a component that inherits from … Read More »
If you use Adobe Premiere or Adobe After Effects to convert a set of still photos to a time lapse movie you must import them as an image sequence. The image sequence requires photos to end with a number which … Read More »
While constructing a new fixed wing drone I needed to design and 3d print a small mount for a GoPro action camera. Typically I would do this by taking a large number of measurements using a ruler or calipers, and … Read More »
In this post I will walk you through the customization required to get your Azure Web App with both a Website and a Web Job deploying automatically from a remote git repository. We’ll cover both continuously running jobs, as well … Read More »
The new 3DR Solo drone, combined with a GoPro is an amazing platform for mapping applications once you figure out the process to properly geotag images. I’ve pulled together a workflow for you that is relatively straight forward. Note that … Read More »
You have a beautiful landscape mesh you’d like to add into your Unity game, but when you import the mesh file you are presented with an error that you have exceeded the 64k vertex limit. Unity uses 16bit indexes on … Read More »
So, you want to cut up an image into tiles? Here is a simple C# class, ImageTile, that lets you provide an X and Y grid size and slice up a source image.
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public class ImageTile { private Image image; private Size size; public ImageTile(string inputFile, int xSize, int ySize) { if (!File.Exists(inputFile)) throw new FileNotFoundException(); image = Image.FromFile(inputFile); size = new Size(xSize, ySize); } public void GenerateTiles(string outputPath) { int xMax = image.Width; int yMax = image.Height; int tileWidth = xMax / size.Width; int tileHeight = yMax / size.Height; if (!Directory.Exists(outputPath)) { Directory.CreateDirectory(outputPath); } for (int x = 0; x < size.Width; x++) { for (int y = 0; y < size.Height; y++) { string outputFileName = Path.Combine(outputPath, string.Format("{0}_{1}.jpg", x, y)); Rectangle tileBounds = new Rectangle(x * tileWidth, y * tileHeight, tileWidth, tileHeight); Bitmap target = new Bitmap(tileWidth, tileHeight); using (Graphics graphics = Graphics.FromImage(target)) { graphics.DrawImage( image, new Rectangle(0, 0, tileWidth, tileHeight), tileBounds, GraphicsUnit.Pixel); } target.Save(outputFileName, ImageFormat.Jpeg); } } } } |
Usage is pretty simple
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var tiler = new ImageTile("image.png", 8, 8); tiler.GenerateTiles("outputdirectory"); |