import { CBARProcessNode } from "./CBARProcessNode";
import { CBARFrame } from "../CBARFrame";
import { Line } from "gammacv";
import { CBARPipeline } from "./CBARPipeline";
import { CBARFeatureTrackerNode } from "./CBARFeatureTrackerNode";
import { CBARTrackedObject } from "./CBARTrackedObject";
export declare type CBARLineFinderResult = {
    lines: CBLine[];
    frameIndex: number;
};
export declare class CBLine extends Line {
    strength: number;
}
export declare class CBARTrackedLine extends CBARTrackedObject {
    constructor(line: CBLine, frameIndex: number, frameTime: number, maxAge: number);
    private _strength;
    get line(): CBLine;
    set line(value: CBLine);
    isMatch(candidate: CBARTrackedLine): boolean;
    merge(obj: CBARTrackedLine): void;
}
export declare class CBARLineFinderNode extends CBARProcessNode {
    private maxLines;
    private maxAge;
    constructor(context: CBARPipeline, maxLines?: number, maxAge?: number);
    private frequency;
    private _tracker?;
    protected get tracker(): CBARFeatureTrackerNode;
    update(frame: CBARFrame): void;
    private _debugLines;
    debug(canvas: HTMLCanvasElement): void;
    destroy(): void;
}