import type { Brief } from '../getBriefDescriptors.js';
export interface SliceBriefOptions {
    /**
     * Start index.
     * @default `0`
     */
    start?: number;
    /**
     * End index.
     * @default `brief.keypoints.length`
     */
    end?: number;
}
/**
 * Slice a Brief to keep only the desired keypoints and the corresponding descriptors.
 * @param brief - Brief to process.
 * @param options - Slice Brief options.
 * @returns The desired keypoints + descriptors.
 */
export declare function sliceBrief(brief: Brief, options?: SliceBriefOptions): Brief;
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