ximgproc_guidedFilter

Extended image processingfunctionOpenCV 5.0.0

import { ximgproc_guidedFilter } from '@banou/opencv-wasm'

Use after await initOpenCV(). See the initialization and named imports guide.

Explore visually: Guided filtering →

Use a guidance image to decide how a local linear model should smooth another image.

VISUAL WALKTHROUGHFiltering

REFERENCE INPUTNoisy or uneven image

The same scene stays here while the working view changes.

→

RESULTApply the rule at every pixel

The whole image has now been processed. The highlighted input value 156 becomes 159.6.

Computed teaching example on a 24 × 16 image. Small kernels and simplified settings keep each change visible; use the image laboratory for native OpenCV.

Simple one-line (Fast) Guided Filter call.

If you have multiple images to filter with the same guided image then use GuidedFilter interface to avoid extra computations on initialization stage.

See: bilateralFilter, dtFilter, amFilter

ximgproc_guidedFilter(guide: Mat, src: Mat, dst: Mat, radius: number, eps: number, dDepth: number, scale: number): void;

3 available overloads

ximgproc_guidedFilter(guide: Mat, src: Mat, dst: Mat, radius: number, eps: number): void;

ximgproc_guidedFilter(guide: Mat, src: Mat, dst: Mat, radius: number, eps: number, dDepth: number): void;

ximgproc_guidedFilter(guide: Mat, src: Mat, dst: Mat, radius: number, eps: number, dDepth: number, scale: number): void;

guide

guided image (or array of images) with up to 3 channels, if it have more then 3 channels then only first 3 channels will be used.

src

filtering image with any numbers of channels.

dst

Output destination, filled by the native operation. output image.

radius

radius of Guided Filter.

eps

regularization term of Guided Filter. {eps}^2 is similar to the sigma in the color space into bilateralFilter.

dDepth

optional depth of the output image.

scale

subsample factor of Fast Guided Filter, use a scale less than 1 to speeds up computation with almost no visible degradation. (e.g. scale==0.5 shrinks the image by 2x inside the filter)

Upstream declaration ↗

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