_getCoefficients( kernelRadius ) {

		const coefficients = [];

		for ( let i = 0; i < kernelRadius; i ++ ) {

			coefficients.push( 0.39894 * Math.exp( - 0.5 * i * i / ( kernelRadius * kernelRadius ) ) / kernelRadius );

		}

		return coefficients;

	}
Computes gaussian coefficients depending on the given kernel radius.

@private
@param {number} kernelRadius - The kernel radius.
@return {Array<number>}