Muestreo
Referencia
- Panel
The integrator is the rendering algorithm used to compute the lighting. Cycles currently supports a path tracing integrator with direct light sampling. It works well for various lighting setups, but is not as suitable for caustics and some other complex lighting situations.
Rays are traced from the camera into the scene, bouncing around until they find a light source such as a light, an object emitting light, or the world background. To find lights and surfaces emitting light, both indirect light sampling (letting the ray follow the surface BSDF) and direct light sampling (picking a light source and tracing a ray towards it) are used.
- Muestras en las vistas
Number of samples for viewport rendering. Setting this value to zero enables indefinite sampling of the viewport.
- Muestras en el procesamiento
Number of paths to trace for each pixel in the final render. As more samples are taken, the solution becomes less noisy and more accurate.
- Tiempo límite
Renders scene until time limit or sample count is reached. When the time is set to 0, the sample count is used to determine when the render stops.
Nota
The time limit does not include pre-render processing time, only render time.
Muestreo adaptativo
With adaptive sampling Cycles automatically reduces the number of samples in areas that have little noise, for faster rendering and more even noise distribution. For example hair on a character may need many samples, but the background may need very few.
With adaptive sampling it is also possible to render images with a target amount of noise. This is done by settings the Noise Threshold, typical values are in the range from 0.1 to 0.001. Then render samples can then be set to a high value, and the renderer will automatically choose the appropriate amount of samples.
- Umbral de ruido
The error threshold to decide whether to continue sampling a pixel or not. Typical values are in the range from 0.1 to 0.001, with lower values meaning less noise. Setting it to exactly 0 lets Cycles guess an automatic value for it based on the total sample count.
- Muestras mín
The minimum number of samples a pixel receives before adaptive sampling is applied. When set to 0 (default), it is automatically set to a value determined by the Noise Threshold.
Reducción de ruido
Denoising removes noise while previewing scenes in Rendered mode in the 3D Viewport or for final renders.
- Procesar
Denoising for the final render can be enabled or disabled with the checkbox. For denoising the image after rendering with the Denoising node, the Data Render Passes also adapt to the selected denoiser.
- Open Image Denoise
Uses Intel’s Open Image Denoise, an AI denoiser which runs on the CPU.
- OptiX
Uses an artificial intelligence algorithm to remove noise from renders. It is based on the OptiX – NVIDIA acceleration engine and therefore has the same GPU requirements as rendering with Optix.
- Vista
Denoising for the Rendered mode in the 3D Viewport can be enabled or disabled for with the checkbox.
- Automático
Uses the faster available denoiser for 3D Viewport rendering (OptiX if available, otherwise OpenImageDenoise).
- OpenImageDenoise
Uses Intel’s Open Image Denoise, an AI denoiser which runs on the CPU.
- OptiX
Uses an artificial intelligence algorithm to remove noise from renders. It is based on the OptiX – NVIDIA acceleration engine and therefore has the same GPU requirements as rendering with Optix.
- Muestreo inicial
Sample to start denoising in the 3D Viewport.
- Input Passes
Controls which Render Pass the denoiser should use as input, which can have different effects on the denoised image. Generally, the more passes the denoiser has to denoise the better the result. It is recommended to at least use Albedo as None can blur out details, especially at lower sample counts.
- Ninguno
Denoises the image using color data.
- Albedo
Denoises the image using color and albedo data.
- Albedo y normal
Denoises the image using color, albedo, and normal pass data.
- Prefiltrado
Controls whether or not prefiltering is applied to Input Passes for use when denoising. Visible only when using OpenImageDenoise.
- Ninguno
Does not apply any prefiltering to the input passes. This option retains the most detail and is the fastest, but assumes the input passes are noise free which may require a high sample count. If the input passes aren’t noise free, then noise will remain in the image after denoising.
- Rápido
Asumirá que las pasadas entrantes no se encuentran libres de ruido, aún así no aplicará un prefiltrado a las mismas. Esta opción es más rápida que Preciso, pero produce un resultado más borroso.
- Preciso
Prefiltrará las pasadas entrantes antes de realizar la reducción de ruido. Esta opción usualmente producirá resultados más detallados que Rápido, a costa de un mayor tiempo de procesamiento.
Avanzado
- Semilla
Seed value for integrator to get different noise patterns.
- Usar semilla animada (ícono de reloj)
Changes the seed for each frame. It is a good idea to enable this when rendering animations because a varying noise pattern is less noticeable.
- Patrón
Random sampling pattern used by the integrator. When Muestreo adaptativo is enabled, Progressive Multi-Jitter is always used instead of Sobol.
- Sobol
Uses a Sobol pattern to decide the random sampling pattern used by the integrator. See Sobol sequence on Wikipedia for more information.
- Progressive Multi-Jitter
Uses a progressive multi-jitter pattern to decide the random sampling pattern used by the integrator. Its advantage is to provide a good distribution of samples over iterating sample counts. Because of its good distribution over a range of different sample counts, this sample pattern is used for Adaptive Sampling. See this Pixar paper for more information.
- Desplazamiento de muestras
The number of samples to skip when starting render. This can be used to distribute a render across multiple computers then combine the images with bpy.ops.cycles.merge_images
- Scrambling Distance Multiplier
Lower values Reduce randomization between pixels to improve GPU rendering performance, at the cost of possible rendering artifacts if set too low.
- Automático
Uses a formula to adapt the scrambling distance strength based on the sample count.
- Vista
Uses the Scrambling Distance value for the viewport rendering. This will make the rendering faster but may cause flickering.
- Rebotes de luz mín
Minimum number of light bounces for each path, after which the integrator uses Russian Roulette to terminate paths that contribute less to the image. Setting this higher gives less noise, but may also increase render time considerably. For a low number of bounces, it is strongly recommended to set this equal to the maximum number of bounces.
- Rebotes de transparencia mín
Minimum number of transparent bounces. Setting this higher reduces noise in the first bounces, but can also be less efficient for more complex geometry like hair and volumes.
- Umbral de luz
Probabilistically terminates light samples when the light contribution is below this threshold (more noise but faster rendering). Zero disables the test and never ignores lights. This is useful because in large scenes with many light sources, some might only contribute a small amount to the final image, and increase render times. Using this setting can decrease the render times needed to calculate the rays which in the end have very little affect on the image.
- Muestras de capas
Cuando existan capas de visualización en la escena que tengan la cantidad de muestras por capa redefinida, esta opción permitirá especificar cómo deberán ser usadas.
- Usar
Las muestras establecidas en las capas de visualización redefinirán a la cantidad de muestras definidas para la escena.
- Limitadas
Se usará la cantidad de muestras de la escena para limitar la cantidad de muestras redefinidas en las capas de visualización.
- Ignorar
Se ignorará la redefinición de muestras que hubiera sido establecida en las capas de visualización.