Tag Archives: Bitmap

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

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Easily manipulate pixels in WPF and C#

After building the example Save bitmap files in WPF and C#, I couldn’t get it out of my head. Doing the math to set the correct bytes in a one-dimensional pixel array isn’t all that hard, but it is annoying … Continue reading

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Save bitmap files in WPF and C#

This example shows how to use WPF and C# to save bitmap files. The example Set the pixels in a WPF bitmap in C# shows how to create a WriteableBitmap in WPF. This example shows how to save the resulting … Continue reading

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Use an animated cursor in C#

This example doesn’t show how to use an animated cursor file such as an animated gif or png file. As far as I know, C# doesn’t support that kind of cursor. What this example does do is show how to … Continue reading

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Make light pixels transparent in an image in C#

Recently I had an image and I wanted to make all of the light pixels transparent. Ideally I could simply make the white pixels transparent, but the image was scanned so few of the pixels were pure white. What I … Continue reading

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Convert a metafile into a PNG file in C#

A metafile (WMF file) contains drawing commands that tell a program how to produce an image. This is very useful and allows you to resize the image without producing ugly anti-aliasing effects, but sometimes you may want a raster image … Continue reading

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Display a Windows metafile (wmf) in C#

A Windows metafile (wmf) is an image file that contains instructions for drawing shapes. In contrast, bitmap, PNG, JPG, and other raster image files indicate exactly what colors individual pixels should have. Because a Windows metafile contains drawing instructions instead … Continue reading

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Warp images arbitrarily in C#, Part 2

The post Warp images arbitrarily in C#, Part 1 explains how to warp images, but it omits the method that maps an output pixel (x1, y1) back to an input pixel (x0, y0) in the original image. This post describes … Continue reading

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Warp images arbitrarily in C#, Part 1

This is an extension of the example Use image filters to perform edge detection, smoothing, embossing, and more in C# that adds new features that warp images in arbitrary ways. The idea is to use two functions F(x, y) and … Continue reading

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Rotate a picture in C#

I recently returned from a trip and one particular picture was rotated just a tiny bit from where I wanted it. Normally I wouldn’t care but this picture (a small version is included in the download) has horizontal features at … Continue reading

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