Added bilateralBlur to MagickImage.

src/magick-image.ts

@@ -518,6 +518,22 @@ export interface IMagickImage extends IDisposable {
      */
     autoThreshold(method: AutoThresholdMethod): void;
 
+    /**
+     * Applies a non-linear, edge-preserving, and noise-reducing smoothing filter.
+     * @param width The width of the neighborhood in pixels.
+     * @param height The height of the neighborhood in pixels.
+     */
+    bilateralBlur(width: number, height: number): void;
+
+    /**
+     * Applies a non-linear, edge-preserving, and noise-reducing smoothing filter.
+     * @param width The width of the neighborhood in pixels.
+     * @param height The height of the neighborhood in pixels.
+     * @param intensitySigma The sigma in the intensity space.
+     * @param spatialSigma The sigma in the coordinate space.
+     */
+    bilateralBlur(width: number, height: number, intensitySigma: number, spatialSigma: number): void;
+
     /**
      * Blur image with the default blur factor (0x1).
      */
@@ -2380,6 +2396,18 @@ export class MagickImage extends NativeInstance implements IMagickImage {
         });
     }
 
+    bilateralBlur(width: number, height: number): void;
+    bilateralBlur(width: number, height: number, intensitySigma: number, spatialSigma: number): void;
+    bilateralBlur(width: number, height: number, intensitySigmaOrUndefined?: number, spatialSigmaOrUndefined?: number): void
+    {
+        const intensitySigma = this.valueOrComputedDefault(intensitySigmaOrUndefined, () => Math.sqrt((width * width) + (height * height)));
+        const spatialSigma = this.valueOrDefault(spatialSigmaOrUndefined, intensitySigma * 0.25);
+        this.useException(exception => {
+            const instance = ImageMagick._api._MagickImage_BilateralBlur(this._instance, width, height, intensitySigma, spatialSigma, exception.ptr);
+            this._setInstance(instance, exception);
+        });
+    }
+
     blur(): void;
     blur(channels: Channels): void;
     blur(radius: number, sigma: number): void;
@@ -3732,6 +3760,13 @@ export class MagickImage extends NativeInstance implements IMagickImage {
         return value;
     }
 
+    private valueOrComputedDefault<TType>(value: TType | undefined, defaultValue: () => TType): TType {
+        if (value === undefined)
+            return defaultValue();
+
+        return value;
+    }
+
     private useException<TReturnType>(func: (exception: Exception) => TReturnType): TReturnType {
         return Exception.use(func, error => {
             if (this.onWarning !== undefined)

tests/magick-image/bilateral-blur.spec.ts

@@ -0,0 +1,22 @@
+/*
+  Copyright Dirk Lemstra https://github.com/dlemstra/magick-wasm.
+  Licensed under the Apache License, Version 2.0.
+*/
+
+import { TestFiles } from '@test/test-files';
+
+describe('MagickImage#bilateralBlur', () => {
+    it('should change pixels of the image', () => {
+        TestFiles.Images.Builtin.logo.use(image => {
+            image.bilateralBlur(5, 5);
+            expect(image).toHavePixelWithColor(387, 435, '#b2191dff');
+        });
+    });
+
+    it('should use the specified sigma values', () => {
+        TestFiles.Images.Builtin.logo.use(image => {
+            image.bilateralBlur(5, 5, 10, 10);
+            expect(image).toHavePixelWithColor(387, 435, '#c11b1fff');
+        });
+    });
+});