import { IRasterData, SchemaRGBOption } from '../../interface';
export type operationsType = 'rgb' | 'nd';
export declare const operationsSchema: {
    nd: {
        type: string;
        expression: (string | (string | (string | number)[])[])[];
    };
    rgb: {
        type: string;
        method: typeof strethRgb2minMax;
    };
};
declare function strethRgb2minMax(bandsData: IRasterData[], options?: SchemaRGBOption): {
    rasterData: number[];
    rMinMax: number[];
    gMinMax: number[];
    bMinMax: number[];
};
export {};