Results 201 to 210 of about 11,508 (252)
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Generation method of elemental image array using micro-lens arrays with different specifications
Proceedings of SPIE, 2013We propose an integral imaging in which the micro-lens array in the pickup process called MLA 1 and the micro-lens array in the display process called MLA 2 have different specifications. The elemental image array called EIA 1 is captured through MLA 1 in the pickup process.
Huan Deng, Da-Hai Li
exaly +2 more sources
35.2: Generation method of orthoscopic elemental image array from a sparse camera array
Digest of Technical Papers SID International Symposium, 2012Abstract We propose a generation method of orthoscopic elemental image array from a sparse camera array. A parallax image array obtained by a sparse camera array is different perspectives of a real 3D scene, and it has all the information that the elemental image array needs.
Huan Deng, Da-Hai Li, Cheng-Gao Luo
exaly +2 more sources
Elemental image array generation algorithm with accurate depth information for integral imaging
Applied Optics, 2021In integral imaging, reproducing the depth information of three-dimensional (3D) objects accurately is one of the goals of scientific researchers. Based on the existing research, this paper proposes a new, to the best of our knowledge, elemental image array (EIA) generation algorithm, which does not need to know the depth information of the spatial ...
Yan, Mao +7 more
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Blocked element compensation in phased array imaging
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 1993In clinical applications using large apertures, a significant number of phased array elements may be blocked due to discontinuous acoustic windows into the body. These blocked elements produce undesired beamforming artifacts, degrading spatial and contrast resolution.
P C, Li +3 more
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Advances in passive imaging elements with micromirror array
SPIE Proceedings, 2008We have proposed a new passive imaging optics which consists of a grid array of micro roof mirrors working as dihedral corner reflectors. Although this element forms mirror-like images at opposite side of objects, the images are real. Because the imaging principle of the proposed element is based on accumulation of rays, the design of each light path ...
Satoshi Maekawa +2 more
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128 Element ultrasound array for transcranial imaging
2010 IEEE International Ultrasonics Symposium, 2010The medical potential of transcranial ultrasound has been severely limited by strong attenuation and scattering by the skull, which has prevented its use through most regions of the bone. We have been investigating methods to image through these areas by applying various encoding approaches at reduced frequency, thus reducing both absorption and ...
F. Can Meral, Gregory T. Clement
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Synthetic-aperture sonar imaging with a multiple-element receiver array
IEEE International Conference on Acoustics Speech and Signal Processing, 1993The application of synthetic aperture techniques in sonar imaging of the ocean floor has been limited by sonar platform instability. The authors present a robust algorithm for motion estimation and compensation to perform synthetic aperture image formation.
Brett L. Douglas, Hua Lee
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A Multiple-Gate CCD-Photodiode Sensor Element for Imaging Arrays
IEEE Journal of Solid-State Circuits, 1978The addition of barrier and storage gates between the photodiodes and transfer gates of a CCD imaging array provides improved and versatile operating characteristics compared with present silicon scanners. An experimental scanner, made with multiple-gate photoelements, has new functional capabilities which result from the on-chip structure.
J.M. White, S.G. Chamberlain
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High frame rate imaging with a small number of array elements
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 1999Recently, a high frame rate imaging method has been developed to construct either 2-D or 3-D images (about 3750 frames or volumes/s at a depth of about 200 mm in biological soft tissues because only one transmission is needed). The signal-to-noise ratio (SNR) is high using this method because all array elements are used in transmission and the transmit
J Y, Lu, S, He
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SMASH imaging with an eight element multiplexed RF coil array
Magma: Magnetic Resonance Materials in Physics, Biology, and Medicine, 2000SMASH (SiMultaneous Acquisition of Spatial Harmonics) is a technique which can be used to acquire multiple lines of k-space in parallel, by using spatial information from a radiofrequency coil array to perform some of the encoding normally produced by gradients.
J A, Bankson +3 more
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