An old project of the time that I was an undergraduate student in Tsinghua Unversity, Beijing. This was one of the final projects of the course (Introductory) Computer Graphics. The painting is designed and developed by me (Yucheng Zhang) independently.
The small project depends on OpenCV, but only uses its png-encoding feature.
'tree.png' is the fancy resulting tree; 'crosses.png' is another picture made by ray-tracing during I made 'tree.png'.
'raytrace.pdf' is the old report of this project.