export declare class PreprocessorConfig {
    normalize: NormalizeConfig;
    resize: boolean;
    resizeLonger: boolean;
    size: number;
    centerCrop: boolean;
    cropSize: number;
    flipChannels: boolean;
    squareImage: boolean;
    pad: boolean;
    padSize: number;
    rescale: boolean;
    rescaleFactor: number;
    constructor();
    static fromFile: (configPath: string) => Promise<PreprocessorConfig>;
    static parseConfig: (configData: any) => PreprocessorConfig;
}
export type NormalizeConfig = {
    enabled: boolean;
    mean?: number[];
    std?: number[];
};