export declare class ImageReference {
    base64Image: string;
    width: number;
    height: number;
    xTopLeft: number;
    yTopLeft: number;
    constructor(base64Image: string, width: number, height: number, xTopLeft: number, yTopLeft: number);
    static fromJson(json: ImageReference): ImageReference;
    toJson(): Record<string, unknown>;
}