export interface Point {
    x: number;
    y: number;
}
/** TL, TR, BR, BL */
export type Quad = [Point, Point, Point, Point];
export declare function fullImageQuad(width: number, height: number): Quad;
interface UseEdgeDetectionResult {
    corners: Quad | null;
}
/**
 * Runs Canny edge detection on the image to suggest document corners.
 * Falls back to full-image corners if no quadrilateral is found.
 */
export declare function useEdgeDetection(cv: any, canvas: HTMLCanvasElement | null, enabled: boolean): UseEdgeDetectionResult;
export {};