export declare class HandwrittenExpressionRecogniserDNN {
    static recognise(canvas: HTMLCanvasElement): string;
    private static feedForward(image);
    private static format(layers, level?);
    private static isSuperscript(layer1, layer2, level);
    private static formatSuperscript(layer, layers, level);
    private static isSubscript(layer1, layer2, level);
    private static formatSubscript(layer, layers, level);
    private static formatSameLevel(layer, layers, level);
    private static isOperation(symbol);
}