export declare class ImageBlurrer {
    static blur(imageData: ImageData, radius: number, delta: number): ImageData;
    protected static blurHorizontally(imageData: ImageData, radius: number, kernel: number[], target: Uint8ClampedArray): void;
    protected static blurVertically(image: ImageData, radius: number, kernel: number[]): void;
    protected static checkDelta(original: ImageData, target: Uint8ClampedArray, delta: number): void;
}
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