gapi_bilateralFilter
import { gapi_bilateralFilter } from '@banou/opencv-wasm'Use after await initOpenCV(). See the initialization and named imports guide.
Applies the bilateral filter to an image.
The function applies bilateral filtering to the input image, as described in http://www.dai.ed.ac.uk/CVonline/LOCAL_COPIES/MANDUCHI1/Bilateral_Filtering.html bilateralFilter can reduce unwanted noise very well while keeping edges fairly sharp. However, it is very slow compared to most filters.
Sigma values: For simplicity, you can set the 2 sigma values to be the same. If they are small (< 10), the filter will not have much effect, whereas if they are large (> 150), they will have a very strong effect, making the image look "cartoonish".
Filter size: Large filters (d > 5) are very slow, so it is recommended to use d=5 for real-time applications, and perhaps d=9 for offline applications that need heavy noise filtering.
This filter does not work inplace.
Note: Function textual ID is "org.opencv.imgproc.filters.bilateralfilter"
gapi_bilateralFilter(src: GMat, d: number, sigmaColor: number, sigmaSpace: number, borderType: number): GMat;2 available overloads
gapi_bilateralFilter(src: GMat, d: number, sigmaColor: number, sigmaSpace: number): GMat;gapi_bilateralFilter(src: GMat, d: number, sigmaColor: number, sigmaSpace: number, borderType: number): GMat;srcSource 8-bit or floating-point, 1-channel or 3-channel image.
dDiameter of each pixel neighborhood that is used during filtering. If it is non-positive, it is computed from sigmaSpace.
sigmaColorFilter sigma in the color space. A larger value of the parameter means that farther colors within the pixel neighborhood (see sigmaSpace) will be mixed together, resulting in larger areas of semi-equal color.
sigmaSpaceFilter sigma in the coordinate space. A larger value of the parameter means that farther pixels will influence each other as long as their colors are close enough (see sigmaColor ). When d>0, it specifies the neighborhood size regardless of sigmaSpace. Otherwise, d is proportional to sigmaSpace.
borderTypeborder mode used to extrapolate pixels outside of the image, see #BorderTypes
Destination image of the same size and type as src. Release returned native handles with using or delete(), including handles nested in results.
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