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Article
Conjugated polymers with thiophene-fused thiaborin units and their strong intermolecular interactions
Boron-incorporated p−π* conjugated polymers have been studied as optoelectronic and sensor materials. p−π* conjugated polymers usually possess bulky aryl groups that kinetically stabilize the boron centers, an...
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Article
Polarization imaging by use of optical scanning holography
Polarization information is useful for various applications such as remote sensing and biomedical imaging. In general, polarization information is obtained using a polarization camera; however, the measured da...
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Article
Multiplexed recording based on the reference wave correlation for computer-generated holographic data storage
Holographic data storage (HDS) based on a computer-generated hologram (CGH) technique has been proposed as a promising approach to realize an in-line and simple HDS system. This work focuses on multiplexed rec...
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Article
Phase imaging based on modified transport of intensity equation using liquid crystal variable retarder with partial coherent illumination
In this paper, we demonstrate a non-interferometric phase imaging technique based on modified transport of intensity equation (TIE) through a liquid crystal variable retarder (LCVR) and partial coherent illumi...
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Article
Complex amplitude map** based on adaptive autofocusing algorithm
Since a complex amplitude distribution can be obtained in only a single two-dimensional plane using conventional imaging techniques, it is hard to obtain in-focus complex amplitude of three-dimensional structu...
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Article
Object plane detection and phase-amplitude imaging based on transport of intensity equation
By using transport of intensity equation (TIE), phase distribution of an object is retrieved from through-focus intensity images. This technique allows simple and robust phase imaging compared with an interfer...
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Article
Spatially incoherent Fourier digital holography by four-step phase-shifting rotational shearing interferometer and its image quality
Spatially incoherent Fourier digital holography using a rotational shearing interferometer for four-step phase-shifting method is proposed. The previous incoherent Fourier holography using a rotational shearin...
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Article
Dynamic recording of a digital hologram with single exposure by a wave-splitting phase-shifting method
The wave-splitting phase-shifting digital holography using a pixelated microretarder array is proposed. By using four intensity images recorded by the pixelated microretarder array, Stokes parameters of the in...
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Chapter
Improvement of Viewing-Zone Angle and Image Quality of Digital Holograms
A method to improve the viewing-zone angle and the image quality of a digital hologram is presented. A number of digital holograms of a central object are recorded from the position on the circumference. The h...
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Chapter
Polarimetric Imaging of 3-D Object by Use of Wavefront-Splitting Phase-Shifting Digital Holography
A polarimetric imaging method of a 3-D object by use of wavefront-splitting phase-shifting digital holography is presented. Phase-shifting digital holography with a phase difference between orthogonal polariza...
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Chapter
Hybrid Optical Encryption of a 3D Object by Use of a Digital Holographic Technique
A hybrid optical encryption of a 3D object by using a combination of a real optical system and a virtual optical system has been proposed. The encryption was performed by a phase modulation of the object wave ...
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Chapter
Optical Image Encryption Using Optimized Keys
We have proposed a secure optical data-storage system with a random phase key code based on a configuration of a joint transform correlator. The method to design the key code has been proposed. Computer simula...
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Chapter
Polarization Encoding for an Optical Security System
A polarization-encoding system for optical security verification is proposed. The polarization information is bonded to an identification card for security verification. As the polarization state cannot be ima...
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Chapter
Applications of Digital Holography for Information Security
Secure optical storage based on a configuration of a joint transform correlator (JTC) using a photorefractive material is presented. A key code designed by an optimized algorithm so that its Fourier transform ...
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Article
Layered blind deconvolution using subband filter banks
A blind deconvolution method using the concept of subband filter banks has been proposed. This method makes possible the speedy convergence of solution, due to estimation of supports of the reconstructed image...
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Article
Layered blind deconvolution using subband filter banks
A blind deconvolution method using the concept of subband filter banks has been proposed. This method makes possible the speedy convergence of solution, due to estimation of supports of the reconstructed image...
