export declare function sharpen(imageData: ImageData, threshold: number): ImageData;
export declare class ConvolutionApplicator {
    protected kernel: number[][];
    protected kernelWeight: number;
    constructor(kernel: number[][]);
    apply(imageData: ImageData, threshold: number): ImageData;
    applyKernelToPixel(image: ImageData, x: number, y: number, target: Uint8ClampedArray): void;
    applyThreshold(image: ImageData, target: Uint8ClampedArray, threshold: number): void;
}
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