Computer Graphics

A collection of C# and WPF applications exploring fundamental computer graphics, image processing and geometric transformation techniques. The repository contains coursework exercises implemented as separate desktop applications, with the algorithms written directly in C#.

Contents

The course required completion of eight out of nine laboratory assignments. Lab 8 was not selected, which is why the repository contains Labs 1–7 and Lab 9.

• Lab 1 — Drawing primitives: interactive creation and editing of lines, rectangles and circles, with JSON save and load support.
• Lab 2 — PPM image viewer: decoding of P3 and P6 PPM files, pixel inspection and JPEG export with configurable quality.
• Lab 3 — Colour models: RGB–CMYK conversion and an interactive 3D RGB colour cube with slice visualization.
• Lab 4 — Image filtering: arithmetic and brightness transformations, grayscale conversion, smoothing, median filtering, Sobel edge detection, sharpening, Gaussian blur and custom convolution kernels.
• Lab 5 — Histograms and binarization: histogram stretching and equalization together with manual, percent-black, iterative mean, entropy, minimum-error and fuzzy minimum-error thresholding.
• Lab 6 — Curves and rasterization: Bresenham line drawing and interactive Bézier curve construction using configurable control points.
• Lab 7 — 2D transformations: polygon creation, vertex editing, translation, rotation and scaling, with JSON persistence.
• Lab 9 — Image analysis: HSV range selection, live colour segmentation and calculation of the percentage of matching pixels.

Technology stack

• C#
• .NET 8 and .NET 10
• Windows Presentation Foundation (WPF)
• XAML
• WriteableBitmap pixel-buffer processing

Repository structure

Each GK.Lab* directory is an independent WPF project. Shared sample images and PPM files are stored in img/.

Running the applications

The projects target Windows because they use WPF. Open the selected .csproj file in Visual Studio on Windows, or build it with a compatible .NET SDK:

dotnet run --project GK.Lab1/GK.Lab1.csproj

Replace GK.Lab1 with the lab you want to run. Labs 1–2 target .NET 8, while the later projects currently target .NET 10.

Project status

This repository is a completed collection of computer graphics coursework. The applications are intended for local Windows use and are not deployed services.

Author

Developed by Michał Grochowski.