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manual/composite_nodes/types/filter/bilateral_blur.rst
| .. TODO/Review: {{review|copy=X}} . | |||||
| Bilateral Blur Node | |||||
| =================== | |||||
| .. figure:: /images/Tutorials-NTR-ComBilateralBlur.jpg | |||||
| Blur node | |||||
| The bilateral blur node performs a high quality adaptive blur on the source image. | |||||
| It can be used for various purposes like: | |||||
| smoothing results from blenders raytraced ambient occlusion | |||||
| smoothing results from various unbiased renderers, | |||||
| to fake some performance-heavy processes, like blurry refractions/reflections, soft shadows, | |||||
| to make non-photorealistic compositing effects. | |||||
| Inputs | |||||
| ------ | |||||
| Bilateral blur has 2 inputs: | |||||
| *Image*, for the image to be blurred. | |||||
| *Determinator*, which is non-obligatory, and is used only if connected. | |||||
| if only 1st input is connected, | |||||
| the node blurs the image depending on the edges present in the source image. | |||||
| If the Determinator is connected, | |||||
| it serves as the source for defining edges/borders for the blur in the image. | |||||
| This has great advantage in case the source image is too noisy, | |||||
| but normals in combination with zbuffer can still define exact borders/edges of objects. | |||||
| Options | |||||
| ------- | |||||
| Iterations | |||||
| Defines how many times the filter should perform the operation on the image. | |||||
| It practically defines the radius of blur. | |||||
| Color Sigma | |||||
| Defines the threshold for which color differences in the image should be taken as edges. | |||||
| Space sigma | |||||
| A fine-tuning variable for blur radius. | |||||
| Examples | |||||
| -------- | |||||
| .. figure:: /images/Manual-Compositing_Nodes-BilateralBlur_ex3.jpg | |||||
| :width: 250px | |||||
| :figwidth: 250px | |||||
| Bilateral smoothed buffered shadow | |||||
| .. figure:: /images/Manual-Compositing_Nodes-BilateralBlur_ex1.jpg | |||||
| :width: 250px | |||||
| :figwidth: 250px | |||||
| Bilateral smoothed AO | |||||
| .. figure:: /images/Manual-Compositing_Nodes-BilateralBlur_ex2.jpg | |||||
| :width: 250px | |||||
| :figwidth: 250px | |||||
| Bilateral faked blurry refraction+smoothed reytraced soft shadow | |||||