import { CBARProcessNode } from "./CBARProcessNode";
import { CBARFrame } from "../CBARFrame";
import { CBARPipeline } from "./CBARPipeline";
import { OpticalFlowResult } from "./CBAROpticalFlowNode";
import { CBARTrackedObject } from "./CBARTrackedObject";
export declare type CBARFeatureTrackerConfig = {
    maxFeatures?: number;
};
export declare class CBARFeatureTrackerNode extends CBARProcessNode {
    config: CBARFeatureTrackerConfig;
    constructor(context: CBARPipeline, _config?: CBARFeatureTrackerConfig);
    private _candidates;
    private _trackedObjects;
    track(obj: CBARTrackedObject): void;
    get trackedObjects(): CBARTrackedObject[];
    update(frame: CBARFrame): void;
    updateIntersections(flow: OpticalFlowResult): void;
    debug(canvas: HTMLCanvasElement): void;
    destroy(): void;
}