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Category Archives: image processing
Make a picture with a transparent hole in it in C#
The example Create oval images in C# shows how to make a transparent image with an oval-shaped picture in it. This example shows how to do the converse: it makes an image with a transparent hole in the middle of … Continue reading
Create sized oval images in C#
Almost as soon as I had finished the example Create oval images in C#, I realized that it wouldn’t work for my purposes. I wanted to make oval images for several people. Unfortunately, that program didn’t let you make images … Continue reading
Create oval images in C#
This example lets you create oval images with transparent backgrounds. It includes some features such as menus that let you load and save files. Download the example to see those details. The more interesting part is the code that creates … Continue reading
Encode and decode Futurama’s alienese in C#
My last two posts explained a program can pull out pieces of an image. In those examples, the image was a collection of glyphs and the program saved the individual glyphs in png files. This post uses the glyphs to … Continue reading
Separate glyphs in an image in C#, Part 2
This is the second post describing the program that I wrote to separate glyphs in a combined image. The first post explained the program’s menus. This post explains how the program manages its red glyph selection rectangle. This post describes … Continue reading
Separate glyphs in an image in C#, Part 1
I’m working on a program to translate to and from Futurama’s alienese alphabet. Before I do that, I wrote this program to separate glyphs stored in an image that contains the alphabet. It’s a fairly full-featured program, so I’ll describe … Continue reading
Posted in graphics, image processing
Tagged alienese, C#, C# programming, example, example program, Futurama, graphics, image processing, separate glyphs, Windows Forms programming
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Perform image hashing in C#
Image hashing or (perceptual image hashing) attempts to reduce an image to a concise code that represents the image so you can compare it to other images to see if they are the same. This example uses a difference hash … Continue reading
Posted in algorithms, graphics, image processing
Tagged algorithms, C#, C# programming, example, example program, graphics, image processing, Windows Forms programming
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Tile a bitmap with a string in C#
I recently needed a bitmap tiled with a string for a book I’m working on, so I wrote this program to make it. The program lets you click on the font name, dimensions, or colors to select those values. When … Continue reading
Save WriteableBitmap images in multiple formats in WPF and C#
The post Easily save a WriteableBitmap in WPF and C# describes an extension method that makes it easy to save a WriteableBitmap object into a PNG file, but what if you want to save the image in some other format … Continue reading
Posted in extension methods, graphics, image processing, wpf, XAML
Tagged C#, C# programming, example, example program, extension methods, graphics, image file formats, image formats, image processing, png, png file, save bitmap, save WriteableBitmap, SaveBitmap, Windows Forms programming, WPF, WriteableBitmap, XAML
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Easily save a WriteableBitmap in WPF and C#
In my post Save bitmap files in WPF and C# I lamented (okay, whined about) the cumbersomeness of saving a WriteableBitmap into a file in WPF. Fortunately there’s a way you can make it easier. Simply add an extension method … Continue reading