import DownsampleSigmaOptions from './downsample-sigma-options.js';
import DownsampleSigmaResult from './downsample-sigma-result.js';
/**
 * Compute gaussian kernel sigma values in pixel units for downsampling.
 *
 * @param {DownsampleSigmaOptions} options - options object
 *
 * @returns {Promise<DownsampleSigmaResult>} - result object
 */
declare function downsampleSigma(options?: DownsampleSigmaOptions): Promise<DownsampleSigmaResult>;
export default downsampleSigma;
