import type { IRasterData, SchemaRGBOption, TypedArray } 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: Uint8Array;
    rMinMax: number[];
    gMinMax: number[];
    bMinMax: number[];
};
/**
 * 计算百分位数（优化版本：使用快速选择算法）
 * 从 O(n log n) 优化到 O(n)
 */
export declare function percentile(data: TypedArray, minPercent: number, maxPercent: number): number[];
export {};