import * as i0 from "@angular/core";
export declare class FaceDetectorService {
    private model?;
    private loading?;
    private ensureModel;
    private getPathBaseHref;
    /**
     * Recorta el rostro más grande de la imagen dada.
     * @param src File | Blob | string(URL) | HTMLImageElement | HTMLCanvasElement | ImageBitmap
     * @param marginRatio margen extra alrededor del rostro (0.0–0.5)
     */
    cropLargestFace(src: File | Blob | string | HTMLImageElement | HTMLCanvasElement | ImageBitmap, margin?: {
        left: number;
        right: number;
        top: number;
        bottom: number;
    }, forceAspect?: number | null): Promise<any>;
    private toImageBitmap;
    private blobToDataURL;
    static ɵfac: i0.ɵɵFactoryDeclaration<FaceDetectorService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<FaceDetectorService>;
}