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You can find a nice example in OpenCV Documentation. A bilateral filter is non-linear, edge-preserving and noise-reducing smoothing filter. The intensity value at each pixel in an image is replaced by a weighted average of intensity values from nearby pixels. This weight can be based on a Gaussian distribution. Crucially
Parameters: guide – guided image (used to build transformed distance, which describes edge structure of guided image). sigmaSpatial – {\sigma}_H parameter in the original article, it's similar to the sigma in the coordinate space into bilateralFilter(). sigmaColor – {\sigma}_r parameter in the original article, it's similar to the
After loading an image, this code applies a linear image filter and show the filtered images sequentially. The filter used here the most simplest one called homogeneous smoothing or box filter. It does smoothing by sliding a kernel (filter) across the image. Each pixel value will be calculated based on the value of the kernel
5 May 2015 Because of its nice visual quality, fast speed, and ease of implementation, the guided filter has witnessed various applications in real products, such as image editing apps in phones and stereo reconstruction, and has been included in official MATLAB and OpenCV. In this note, we remind that the guided
Kaiming He. Microsoft Research. Guided Filter is included in Wikipedia as a representative edge-preserving smoothing technique. Guided Filter is included in official MATLAB 2014 as a new function. Guided Filter is included in official OpenCV 3.0 as a new function.
22 Jun 2016 GuidedFilter is not in core, but in the ximgproc contrib module. So you'll have to make sure your OpenCV installation is built with contrib modules enabled in order to use GuidedFilter. If it's not, you might check this link. If contrib modules are installed you can just do from cv2.ximgproc import guidedFilter
15 Jun 2014
src, filtering image with any numbers of channels. dst, output image. dDepth, optional depth of the output image. dDepth can be set to -1, which will be equivalent to src.depth().
5 May 2015 included in official MATLAB and OpenCV. In this note, we Code is released. 1. Introduction. The guided filter [1, 2] is one of several popular algo- rithms for edge-preserving smoothing1. Its time complex- ity is O(N) in the method by provid- ing more technical details, visual examples, and publicly.
22 Dec 2014 guided-filter - Fast and complete guided filter implementation for OpenCV. The code supports single-channel and 3-channel (color) guidance images and CV_8U , CV_8S , CV_16U , CV_16S , CV_32S , CV_32F and CV_64F These examples are adapted from the original MATLAB implementation.
     

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