import { Filter } from '../core/Filter';
import { Image } from '../core/Image';
export interface Point {
    x: number;
    y: number;
}
export declare class LK extends Filter {
    private scaleP;
    private scaleN;
    constructor(Lm: number);
    /**
     * Perhaps we can use a shader that has three input textures.
     *  - The first contains input coordinates
     *  - The second contains the prev image
     *    (do we need access to the complete image,
     *     or will a single value per coordinate suffice?)
     *  - The third contains the next image
     *
     * For now we will implement LK in software
     */
    calcOpticalFlowPyrLK(prevImg: Image[], nextImg: Image[], prevPtr: Point[], winSize: number, Lm?: number): {
        err: any;
        nextPts: {
            x: number;
            y: number;
        }[];
        status: any;
    };
}