Results 1 to 10 of about 13,263 (160)
Three-dimensional volumetric object reconstruction using computational integral imaging
Optics Express, 2004 We propose a three-dimensional (3D) imaging technique that can sense a 3D scene and computationally reconstruct it as a 3D volumetric image. Sensing of the 3D scene is carried out by obtaining elemental images optically using a pickup microlens array and a detector array.
Bahram Javidi +2 more
exaly +3 more sources
Optimum Pitch of Volumetric Computational Reconstruction in Integral Imaging
Electronics (Switzerland)In this paper, we propose a method for how to find the optimum pitch of volumetric computational reconstruction (VCR) in integral imaging. In conventional VCR, the pixel shifts between elemental images are quantized due to pixel-based processing. As a result, quantization errors may occur during three-dimensional (3D) reconstruction in integral imaging.
Min-Chul Lee +2 more
exaly +2 more sources
Plastic and Reconstructive Surgery, Global OpenBackground:. Three-dimensional (3D) models generated from computed tomography (CT) images efficiently and accurately complement surgical comprehension.
Igor R. G. Passaglia, MD, PhD +4 more
doaj +3 more sources
Computational Technique of Volumetric Object Reconstruction in Integral Imaging by Use of Real and Virtual Image Fields [PDF]
ETRI Journal, 2005 We propose a computational reconstruction technique in large-depth integral imaging where the elemental images have information of three-dimensional objects through real and virtual image fields. In the proposed technique, we reconstruct full volume information from the elemental images through both real and virtual image fields.
Dong-Hak Shin +3 more
exaly +2 more sources
Computational volumetric reconstruction of integral imaging with improved depth resolution considering continuously non-uniform shifting pixels [PDF]
Optics and Lasers in Engineering, 2018 In this paper, we propose a new computational volumetric reconstruction technique of three-dimensional (3D) integral imaging for depth resolution enhancement by using non-uniform and integer-valued shifting pixels. In a typical integral imaging system, 3D images can be recorded and visualized using a lenslet array.
Manuel MartÃnez-Corral +2 more
exaly +3 more sources
Sensors, 2022 In this paper, we propose an enhancement of three-dimensional (3D) image visualization techniques by using different pickup plane reconstructions. In conventional 3D visualization techniques, synthetic aperture integral imaging (SAII) and volumetric ...
Jiheon Lee, Myungjin Cho
doaj +1 more source
Three-Dimensional Digital Zooming of Integral Imaging under Photon-Starved Conditions
Sensors, 2023 In this paper, we propose new three-dimensional (3D) visualization of objects at long distance under photon-starved conditions. In conventional three-dimensional image visualization techniques, the visual quality of three-dimensional images may be ...
Gilsu Yeo, Myungjin Cho
doaj +1 more source
Three-Dimensional Photon Counting Optical Encryption With Enhanced Visual Quality and Security Level
IEEE Access, 2021 In this paper, we propose three-dimensional (3D) photon counting double random phase encryption (DRPE) with enhanced visual quality and security level. Conventional 3D photon counting DRPE can quickly encrypt the data by using the 4f optical system and ...
Jaehoon Lee, Myungjin Cho, Min-Chul Lee
doaj +1 more source
Three-Dimensional (3D) Visualization under Extremely Low Light Conditions Using Kalman Filter
Sensors, 2023 In recent years, research on three-dimensional (3D) reconstruction under low illumination environment has been reported. Photon-counting integral imaging is one of the techniques for visualizing 3D images under low light conditions. However, conventional
Hyun-Woo Kim, Myungjin Cho, Min-Chul Lee
doaj +1 more source
Intervertebral Disc Segmentation and Volumetric Reconstruction From Peripheral Quantitative Computed Tomography Imaging [PDF]
IEEE Transactions on Biomedical Engineering, 2009 An automatic system for segmenting and constructing volumetric representations of excised intervertebral discs from peripheral quantitative computed tomography (PQCT) imagery is presented. The system is designed to allow for automatic quantitative analysis of progressive herniation damage to the intervertebral discs under flexion/extension motions ...
Alexander Wong +5 more
openaire +2 more sources