How to continue doing research
Talk to your current professor. If he likes the idea, he might give you the opportunity to use his resources and provide guidance. This could be a preparation to your future master thesis.

If you have less of an idea what you want to do exactly, look out for research assistant/student assistant positions (or ask around if someone needs help), where you could be part of a research project by helping out with simpler (but no less important) tasks. Though I'm not sure this is a thing in computer science.