guibo-tech
commented
1 year ago Parameters in the config file N_rand = 2048 N_samples = 32 N_importance = 32
In the context of rendering rays in computer graphics, N_rand, N_samples, and N_importance typically refer to the number of random samples and importance samples used for rendering and evaluating the final pixel color. Here's a brief explanation of each parameter:
N_rand: This represents the number of random samples per pixel. Random samples are often used for techniques like antialiasing or stochastic effects to reduce pixelation and create smoother images. Increasing N_rand can improve the overall image quality but may also increase rendering time.
N_samples: This refers to the number of primary samples per pixel. Primary samples are the initial rays cast from the camera into the scene. N_samples determines the number of rays per pixel and is used to calculate the color for each pixel. Higher values of N_samples can result in better sampling of the scene and reduced noise, leading to higher-quality images but with increased rendering time.
N_importance: This represents the number of importance samples per pixel. Importance sampling is a technique used to sample rays based on their contribution to the final pixel color. By biasing the samples towards more important areas of the scene, importance sampling can improve the efficiency of the rendering process. Increasing N_importance can lead to better convergence and reduced noise in the final image.These parameters are typically adjusted based on the desired trade-off between image quality and rendering time. Higher values generally result in better quality but require more computational resources. It's common to experiment with different values to find the optimal settings for a specific scene or application.
Training on GPU Nidia RTX 3060
GPU out of memory
Solution
Render rays in smaller minibatches to avoid OOM