Top Hat Filter Implementation

Overview

This project was done as a part of a university course "Computer Organization and Architecture". Its goal was to implement a top hat filter in order to extract small bright objects from a given image. It was done with CUDA, OMP and MPI.

Cosmos image has been provided. Inside of it, all the white dots/elements have been removed with the top hat.

Results

Before:

After:

What I Learned

• How to programme in different environments, especially CUDA
• The purpose of top-hat filter
• Understanding portable graymaps (PGMs) files.

Technical Challenges

• Understand the compilation (eg. nvcc -ccbin top-hat_filter_cuda.cu image_utils.cu top-hat_transform_cuda.cu -o top-hat_filter_cuda.exe)
• Dillatation and parallelism implementation

Future Improvements

• None