The sampling problem is important in digital electron microscopy which deals with discrete digital micrographs. In recording a digital electron micrograph using a digital CCD camera, the camera size is usually limited to less than 1024 ×1024. This limitation results mainly from.the consideration of the cost of the CCD camera and the exposure time needed to record the digital mi- The sampling problem is important in digital electron microscopy which deals with discrete digital micrographs. In recording a digital electron micrograph using a digital CCD camera, the camera size is usually limited to less than 1024 × 1024. the cost of the CCD camera and the exposure time needed to record the digital mi-