/*****************************************************************************************************************/
/*****************************************************************************************************************/
import type { CartesianCoordinate, EquatorialCoordinate } from './common';
/*****************************************************************************************************************/
export type SIP2DParameters = {
    AOrder: number;
    APower: {
        [key: string]: number;
    };
    BOrder: number;
    BPower: {
        [key: string]: number;
    };
};
/*****************************************************************************************************************/
export declare const parseSIPTerm: (term: string, prefix: 'A' | 'B') => [number, number] | null;
/*****************************************************************************************************************/
export type WCS = {
    /**
     *
     *
     * The central or reference pixel for the WCS, e.g., the central pixel of the image.
     *
     *
     */
    crpix: CartesianCoordinate;
    /**
     *
     *
     * The central or reference equatorial coordinate for the WCS, corresponding to the pixel at the central reference pixel.
     *
     *
     */
    crval: EquatorialCoordinate;
    /**
     *
     *
     * CD Matrix Element 1,1 for the WCS
     *
     *
     */
    cd11: number;
    /**
     *
     *
     * CD Matrix Element 1,2 for the WCS
     *
     *
     */
    cd12: number;
    /**
     *
     *
     * CD Matrix Element 2,1 for the WCS
     *
     *
     */
    cd21: number;
    /**
     *
     *
     * CD Matrix Element 2,2 for the WCS
     *
     *
     */
    cd22: number;
    /**
     *
     *
     * Constant term for the right ascension (from the Affine transformation matrix)
     *
     *
     */
    E: number;
    /**
     *
     *
     * Constant term for the declination (from the Affine transformation matrix)
     *
     *
     */
    F: number;
    /**
     *
     *
     * SIP (Simple Imaging Polynomial) parameters for the WCS
     *
     *
     */
    SIP?: SIP2DParameters;
};
/*****************************************************************************************************************/
/**
 *
 * convertPixelToWorldCoordinateSystem
 *
 * Converts a given image pixel to an equatorial coordinate base on the prescribed WCS
 *
 * @param wcs the World Coordinate System (WCS) parameters to use for the conversion
 * @param pixel the pixel to convert to an equatorial coordinate, e.g., { x: 0, y: 0 }
 * @returns the equatorial coordinate of a given pixel in the prescribed WCS
 */
export declare const convertPixelToWorldCoordinateSystem: (wcs: WCS, pixel: CartesianCoordinate) => EquatorialCoordinate;
/*****************************************************************************************************************/