Hi, I'm Ostap. This is my personal blog where I share my thoughts and experiences about technology and programming.
3D Reconstruction: From Hours to Minutes
Explore the complete pipeline from images to interactive 3D models using modern neural approaches. This post covers everything from classical Structure from Motion (COLMAP) to cutting-edge methods like MASt3R-SfM and 3D Gaussian Splatting. Learn how recent advances have reduced reconstruction time from hours to minutes while maintaining photorealistic quality. Includes hands-on demos and practical tools you can try immediately.
Spherical Harmonics Lighting
This post explores a practical method for using spherical harmonics in scene illumination. Instead of directly calculating light from spherical harmonics, we'll convert them into a 2D UV environment map for efficient sampling. This approach transforms spherical harmonics into 2D image that can be easily understood, analyzed and regularized. Don`t forget to run the code in google colab to try it all by yourself.