import * as tf from '@tensorflow/tfjs';
export declare function isTensor(c: any): c is tf.Tensor;
export declare function loadModel(): Promise<tf.LayersModel>;
export declare function mobileNetURL(version: number): string;
export declare function imageToTensor(data: any): tf.Tensor3D;
export declare function capture(rasterElement: HTMLImageElement | HTMLVideoElement | HTMLCanvasElement, grayscale?: boolean): Promise<tf.Tensor<tf.Rank>>;
export declare function cropTensor(img: tf.Tensor3D, grayscaleModel?: boolean, grayscaleInput?: boolean): tf.Tensor3D;