/*
 * ENUM: SE_IMAGE_SCAN_DIRECTION_ENUM
 *
 *   Used in the <Image> class.
 *
 *                     Minor Scan   Major Scan      Image Origin
 *                     -----------------------------------------
 *   SE_IMAGE_SCAN_RU  left-right   bottom-up       lower left
 *   SE_IMAGE_SCAN_RD  left-right   top-down        upper left
 *   SE_IMAGE_SCAN_DR  top-down     left-right      upper left
 *   SE_IMAGE_SCAN_DL  top-down     right-left      upper right
 *
 *   SE_IMAGE_SCAN_LU  right-left   bottom-up       lower right
 *   SE_IMAGE_SCAN_LD  right-left   top-down        upper right
 *   SE_IMAGE_SCAN_UR  bottom-up    left-right      lower left
 *   SE_IMAGE_SCAN_UL  bottom-up    right-left      lower right
 */