<P>This highly practical and self-contained guidebook explains the principles and major applications of digital hologram recording and numerical reconstruction (Digital Holography). </P><P></P><P>A special chapter is designated to digital holographic interferometry with applications in deformation and shape measurement and refractive index determination. </P><P></P><P>Applications in imaging and microscopy are also described. </P><P></P><P>Spcial techniques such as digital light-in-flight holography, holographic endoscopy, information encrypting, comparative holography, and related techniques of speckle metrology are also treated</P>