Gorbatenko B. B. RussiaSaratovYuri Gagarin State Technical University of Saratov, 77, Politechnicheskaya Str., Saratov, 410054, Russiarvp@sgu.ru Author's articles Technique of Digital Laser Speckle-Photography for Measurement of Scattered Object Microdisplacement Digital Optical Holography with Virtual Reference Wave