/**
 * @file Main FaceAPI class that orchestrates face detection and landmark detection
 *
 * This file implements the main API class that coordinates between the face detector
 * and landmark detector to provide a complete facial analysis solution.
 */
import { DetectionOptions, MediaElement, PossiblyTrackedFace, PossiblyTrackedFaceDetectionWithLandmarks, DetectionResult } from '../types/types';
/**
 * Main API class for face detection functionality.
 * This class orchestrates the face detection pipeline, managing the connection
 * between face detection and landmark detection.
 *
 * @example
 * // Basic usage
 * const api = new FaceAPI();
 * const result = await api.detectFaces(imageElement);
 * console.log(`Detected ${result.faces.length} faces`);
 */
export declare class FaceAPI {
    private faceDetector;
    private landmarkDetector;
    private options;
    private isDisposed;
    /**
     * Creates a new FaceAPI instance with the specified options
     * @param options Detection configuration options
     */
    constructor(options?: DetectionOptions);
    /**
     * Detects faces in an image or video
     * @param input Image, video, or canvas element
     * @param options Detection options
     * @returns Detection result containing faces and timing information
     */
    detectFaces(input: MediaElement, options?: DetectionOptions): Promise<DetectionResult<PossiblyTrackedFace>>;
    /**
     * Detects faces with landmarks in an image or video
     * @param input Image, video, or canvas element
     * @param options Detection options
     * @returns Detection result containing faces with landmarks and timing information
     *
     * @example
     * // Detect faces with landmarks and access points
     * const api = new FaceAPI({ maxFaces: 5 });
     * const result = await api.detectFacesWithLandmarks(videoElement);
     *
     * for (const face of result.faces) {
     *   // Access bounding box
     *   const { x, y, width, height } = face.detection.box;
     *
     *   // Access landmarks
     *   const nosePoint = face.landmarks.positions[0];
     *   console.log(`Nose position: ${nosePoint.x}, ${nosePoint.y}`);
     * }
     */
    detectFacesWithLandmarks(input: MediaElement, options?: DetectionOptions): Promise<DetectionResult<PossiblyTrackedFaceDetectionWithLandmarks>>;
    /**
     * Maps face detections to landmarks by combining them
     * @param faces Detected face objects
     * @param landmarkResultSets Detected landmark sets
     * @returns Combined faces with landmarks
     * @private
     */
    private mapFacesToLandmarks;
    /**
     * Updates detection options for both face and landmark detectors
     * @param options New detection options to apply
     */
    updateOptions(options: DetectionOptions): void;
    /**
     * Preloads and warms up the detection models
     * Call this method to improve the performance of the first detection
     */
    warmup(): Promise<void>;
    /**
     * Releases all resources used by the API
     * Call this method when face detection is no longer needed
     */
    dispose(): void;
    /**
     * Upscales face bounding boxes by a given factor.
     * @private
     */
    private upscaleBox;
    /**
     * Upscales a list of faces (bounding boxes) by a given factor.
     * @private
     */
    private upscaleFaces;
    /**
     * Upscales landmark points by a given factor.
     * @private
     */
    private upscaleLandmarks;
}