The methodology suggested in this research provides the great possibility of creating nanostructures composed of various materials, such as soft polymer, hard polymer, and metal, as well as Si. Such nanostructures are required for a vast range of optical and display devices, photonic components, physical devices, energy devices including electrodes of secondary batteries, fuel cells, solar cells, and energy harvesters, biological devices including biochips, biomimetic or biosimilar structured devices, and mechanical devices including micro- or nano-scale sensors and actuators.
This study is focused on proposing a creative system that can display 3D hologram on the real-time basis. This method applies 3D display on volume hologram based on CGH. The process of implementing the system consists of two stages of fringe pattern recording for passive component that includes information on hologram, and irradiating object beam. Distinguished from an existing electronic holographic display system, this system is free from the process of a huge calculation that is necessary to compose CGH for a real-time 3D display. Clarifying a theoretical basis on this method, we have proved validity through results of experiments.
Among the 3D stereoscopic cameras to acquire the stereo views, the parallel-axis stereo camera is considered as the simplest one of binocular stereo cameras. However, it is not able to control vergence since its left and right imaging sensors are fixed. In order to overcome such limitations of the stereoscopic cameras, we propose a parallel-axis stereoscopic camera that has functions for the vergence control and video multiplexing simultaneously, which can be implemented by simple and real-time processing without image deterioration. In this paper, we simulate the effects of the vergence control according to the proposed methods, which is accomplished by the over-sampling at ADC and extracted disparity with help of multiplexing function. It is confirm that the processed stereoscopic images by the proposed PASC are very comfortable for viewing on the 3D display within a limited disparity range.
This paper introduces 3D HDTV relay broadcasting experiments of 2002 FIFA World Cup Korea/Japan using a terrestrial and satellite network. We have developed 3D HDTV cameras, 3D HDTV video multiplexer/demultiplexer, a 3D HDTV receiver, and a 3D HDTV OB van for field productions. By using a terrestrial and satellite network, we distributed a compressed 3D HDTV signal to predetermined demonstration venues which are approved by host broadcast services (HBS), KirchMedia, and FIFA. In this case, we transmitted a 40Mbps MPEG-2 transport stream (DVB-ASI) over a DS-3 network specified in ITU-T Rec. G.703. The video/audio compression formats are MPEG-2 main-profile, high-level and Dolby Digital AC-3 respectively. Then at venues, the recovered left and right images by the 3D HDTV receiver are displayed on a screen with polarized beam projectors.
In this paper we first introduce some R and D activities to develop the technical standards for digital standard definition TV(SDTV) and high definition TV(HDTV) as well as MPEG related activities in Korea. Then we present the key elements of the technical standards of SDTV and HDTV via satellite, which are based on the MPEG- 2 international standard. We describe design and implementation of a prototype DTV encoding system we developed. We also explain the system architecture and design considerations for the development of the prototype HDTV encoding system with application specific integrated circuit(ASIC)s. Both of these prototype systems will be used to verify the technical standards, which need to be prepared for the introduction of digital video services.
Conference Committee Involvement (2)
Soft Mechatronics and Wearable Systems 2025
17 March 2025 | Vancouver, B.C., Canada
Soft Mechatronics and Wearable Systems
25 March 2024 | Long Beach, California, United States
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