.. _net.sf.cimg.CImgBilateralGuided: SmoothBilateralGuided node ========================== .. raw:: html *This documentation is for version 2.0 of SmoothBilateralGuided (net.sf.cimg.CImgBilateralGuided).* Description ----------- Apply joint/cross bilateral filtering on image A, guided by the intensity differences of image B. Uses the ‘blur_bilateral’ function from the CImg library. CImg is a free, open-source library distributed under the CeCILL-C (close to the GNU LGPL) or CeCILL (compatible with the GNU GPL) licenses. It can be used in commercial applications (see http://cimg.eu). Inputs ------ +--------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------+ | Input | Description | Optional | +========+=======================================================================================================================================================================================================================================================================================================================+==========+ | Guide | The guide image indicates where similar pixels are located in each neighborhood. The neighborhood of a pixel consists of pixels that are within a neighborhood of side sigma_s, which have an intensity/value in the Guide image that is within a range of size sigma_r around the intensity of the considered pixel. | No | +--------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------+ | Source |   | No | +--------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------+ Controls -------- .. tabularcolumns:: |>{\raggedright}p{0.2\columnwidth}|>{\raggedright}p{0.06\columnwidth}|>{\raggedright}p{0.07\columnwidth}|p{0.63\columnwidth}| .. cssclass:: longtable +-------------------------------+---------+---------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | Parameter / script name | Type | Default | Function | +===============================+=========+=========+==========================================================================================================================================================================================================================================================================================================================================================================================+ | Spatial Std Dev / ``sigma_s`` | Double | 10 | Standard deviation of the spatial kernel (positional sigma), in pixel units (>=0). A reasonable value is 1/16 of the image dimension. Small values (1 pixel and below) will slow down filtering. | +-------------------------------+---------+---------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | Value Std Dev / ``sigma_r`` | Double | 0.3 | Standard deviation of the range kernel (color sigma), in intensity units (>=0). A reasonable value is 1/10 of the intensity range. In the context of denoising, Liu et al. (“Noise estimation from a single image”, CVPR2006) recommend a value of 1.95*sigma_n, where sigma_n is the local image noise. Small values (1/256 of the intensity range and below) will slow down filtering. | +-------------------------------+---------+---------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | Iterations / ``iterations`` | Integer | 2 | Number of iterations. | +-------------------------------+---------+---------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | (Un)premult / ``premult`` | Boolean | Off | Divide the image by the alpha channel before processing, and re-multiply it afterwards. Use if the input images are premultiplied. | +-------------------------------+---------+---------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | Invert Mask / ``maskInvert`` | Boolean | Off | When checked, the effect is fully applied where the mask is 0. | +-------------------------------+---------+---------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | Mix / ``mix`` | Double | 1 | Mix factor between the original and the transformed image. | +-------------------------------+---------+---------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+