import type { Stack } from '../../Stack.js';
import type { HistogramOptions } from '../../compute/index.js';
/**
 * Get the sum of all the histograms of the stack's images. If no channel is specified in the options, the images must be GREY.
 * @param stack - Stack to process.
 * @param options - Histogram options.
 * @returns The histogram of the stack.
 */
export declare function histogram(stack: Stack, options: HistogramOptions): Uint32Array;
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