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We present a digital holography using high dynamic range (HDR) imaging to improve quality of the reconstructed image of digital holography. The technique extends the dynamic range of the digitally recorded hologram using multiple holograms recorded with different exposures. We numerically and experimentally demonstrated the technique based on an off-axis digital holography system. In the numerical...
The authors descrive a technique for three-dimensional (3D) imaging of transparent and dynamic object from the phase image obtained by parallel phase-shifting digital holography. The phase image of the transparent and dynamic object is recorded and reconstructed by parallel phase-shifting digital holography. Inverse Abel transform is applied to the phase image to calculate 3D image of transparent...
The authors present high-speed motion pictures of phase-image obtained by digital holography. To obtain only the complex amplitudes of dynamically moving objects free from unwanted images such as non-diffraction wave and the conjugate image in digital holography, parallel phase-shifting interferometry was applied. High-speed motion picture of phaseimage of the dynamic change of air induced by focused...
We found out a problem that the non-diffraction wave was not completely removed in parallel phase-shifting digital holography (PPSDH) system using a polarization imaging camera. To solve this problem, we introduce an algorithm for compensating the reconstructed image, which can remove the residual non-diffraction wave. In the algorithm, the phase-shifted holograms generated by image reconstruction...
A method for extending the space bandwidth available for recording an object wave in an off-axis configuration and parallel phase-shifting interferometry using a commercially available polarimetric camera is presented. In these configurations, most of the space bandwidth is discarded to avoid the superposition of the unwanted images, the Oth-order diffraction wave and the conjugate image, on an object...
Parallel phase-shifting digital holography (PPSDH) has been introduced. Movies of high-speed 3-D imaging and those of high-speed phase imaging obtained by PPSDH using a high-speed camera will be demonstrated at the presentation. PPSDH will contribute for 3-D measurement of moving object in such the applications as biological microscope, particle and flow measurement, and so on. This study was partially...
We demonstrate high-speed parallel phase-shifting digital holography capable of three-dimensional measurement of a dynamically moving object. We constructed the recording system by using a quarter-wave plate and a high-speed polarization-imaging camera. Moving pictures of two vibrating elastic bands located on different depth plane were clearly and individually reconstructed by the technique.
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