• KOMUNHWA
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• no.66
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• pp.87-112
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• 2005

Stain removal on ivory has been, for a long time, considered an undesirable treatment in conservation field because ivory is hygroscopic and anisotropic, having different physical properties in different directions. Cyclododecane, which sublimes at room temperature, has been investigated for its use in conservation field since 1995, as a reversible temporary consolidant, sealing agent or coating, water repellent, and barrier layer. This research aims to remove stains on ivory, temporarily protecting the none-stained area or painted area from methanol, acetone or the aqueous cleaning system using cyclododecane as a hydrophobic sealing agent. This research also aims to obtain information regarding whether cyclododecane can be safely and effectively used on archaeological wet ivory. Melted cyclododecane and saturated solutions of cyclododecane in mineral spirits, and hexanes were applied to ivory samples. Application methods, working properties of cyclododecane on ivory, and effect of cyclododecane coating on moisture content of wet ivory were evaluated. The sealing layer formed by molten cyclododecane or by saturated cyclododecane solution in hexane or saturated cyclododecane solution in mineral spirits did not form a secure contact with the surface of the highly polished ivory. The sealing formed with two different layers, in which saturated cyclododecane solution in hexane was applied initially and then molten cyclododecane was applied over the first layer, was found to securely protect the painted area. When the wet samples were kept in 100% RH environments for a month, active mold growths were observed except in the samples sealed with molten cyclododecane. In conclusion, cyclododecane was an efficient hydrophobic sealing agent to protect painting area while cleaning stains on ivory. It also prevented mold growing on wet ivory and wet bone. Evenness of cyclododecane film on ivory will be determined in UV light. Analytical techniques will include visual observation, polarized light microscopy, Scanning Electron Microscope, and Gas Chromatography.

• Archives of design research
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• v.16 no.3
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• pp.263-272
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• 2003

Motiongraphics is not short film and has a special communication method characteristic of design. As graphic design needs space-composition, motiongraphics requires time-composition. In the 1920's, artists belonged Bauhaus in Germany tried to realize time-composition in the plans for abstract animation. At that time the russian film director Eisenstein experimented with moving image composit on, creating new meanings through the montage of heterogeneous images. In the digital era of today, motiongraphics is composed of such various elements as moving image, photo, illustration, typography, etc. The editing in montage film is one-dimensional. Meanwhile, motiongraphics of these days consists of a lot of layers, composing various elements by editing. Motiongraphics needs time structure and visual rhythm as well as scenario or storyboard for time composition. The principle of time composition in motiongraphics ist similar to that of musical composition. If we compare the time composition of abstract animation or montage film with the melody in a solo, time composition for motiongraphicf is like a symphony. Various composing elements are developed under different tempos at the same time.

• Korean Institute of Interior Design Journal
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• no.25
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• pp.94-102
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• 2000

The line of demarcation separating architecture from the art in recent years has blurred, due to the expantionist aspects between. This is a study of the direction which contemporary architecture and art are now taking. The results of the study are as follows: 1. The direction of contemporary architecture is revealed through the works of deconstructivist architects and Hans Hollein. Deconstructivist architects have incooperated abstract forms and concepts for their expression. Also Hans Hollein has brought a new aspect to architecture by combining the aura of spirituality and the use of collage. 2. The direction of contemporary art is revealed through the works of installation artists. Daniel Buren works on the interactivity between the object and the observer. Dan Graham deals with the social issues which caused by the interrelation between the eyes and the visual media. Jae-en Choi works on the actual architectural site and space capturing the spirit of what the space is for shile Jung-hwa Jung deals with the layers of perception within a particular space. Another realm coming into being is the cooperation between artists and architects. The cooperation of Holl and Acconci is expressed through their joint project Storefront Gallery. It is the development of Accocis concept of boundary and Holls methodology. Another example of this realm is revealed through the Fish Gallery of the Guggenheim Museum Bilbao. Gehry was introduced to the nature of material by Serra and Serra learned of new ways of viewing the existence of space between materials from Gehry. These new relationships between contemporary architecture and art are reciprocal in nature are indicators of a dynamic and new changing cooperation now emerging.

• Journal of KIISE:Information Networking
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• v.35 no.6
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• pp.549-556
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• 2008

To achieve flexible visual content adaption for multimedia communications, the ISO/IEC MPEG & ITU-T VCEG form the JVT to develop SVC amendment for the H.264/AVC standard. JVT uses inter-layer prediction as well as inter prediction and intra prediction that are provided in H.264/AVC to remove the redundancy among layers. The main goal consists of designing inter-layer prediction tools that enable the usage of as much as possible base layer information to improve the rate-distortion efficiency of the enhancement layer. But inter layer prediction causes the computational complexity to be increased. In this paper, we proposed an efficient residual prediction. In order to reduce the computational complexity while maintaining the high coding efficiency. The proposed residual prediction uses modified interpolation that is defined in H.264/AVC SVC.

• The Journal of Engineering Geology
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• v.17 no.1 s.50
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• pp.89-99
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• 2007

This paper intends to introduce more objective and qualitative rock mass classification method easily applicable to the excavation of gneissic masses showing corestone weathering profiles. It is proven that corestone weathering profile could be divided with reasonable accuracy into digging, ripping and blasting layers using visual and simple mechanical techniques such as Schmidt hammer rebound test on cut slopes, taking into consideration strength and spacial distribution of corestone, workability and work efficiency of excavation. Also, seismic refraction surveys were employed for shallow investigations (down to $20{\sim}30m$ depth) in corestone weathering profile and conducted across the top of vertical exposures where the underlying geology could be directly inspected. Some discrepancies ($3{\sim}4m$ in average and 6 m occasionally) between the actual and assumed materials with respect to seismic velocities were observed. Thus it can be concluded that field geotechnical mapping and field seismic test should be used together in order to get a relatively good accuracy in assessing likely excavation conditions of corestone weather-ing profiles.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.16 no.2
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• pp.337-343
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• 2012

The techniques of implementing 3D movie have been developed by stereoscopic representation methods of the scene based on human visual experience. Recently, though various novel approaches for stereo movies are proposed to produce realistic 3D image, more study have to be done for compensating keystone distortion which is generated by moving virtual camera. In this paper we propose a novel production technique which minimizes keystone distortion based on analyzing pixel distance, and is easily implemented on popular graphics environment. First, in graphics environment we categorize each objects as individual layers, and extract image data to produce 3D image. The comparison between each animation sequences from proposed and conventional production methods shows that our production technique well compensate the distortion.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.14 no.6
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• pp.2480-2496
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• 2020

Considering that high-dose X-ray radiation during CT scans may bring potential risks to patients, in the medical imaging industry there has been increasing emphasis on low-dose CT. Due to complex statistical characteristics of noise found in low-dose CT images, many traditional methods are difficult to preserve structural details effectively while suppressing noise and artifacts. Inspired by the deep learning techniques, we propose a densely connected residual network (DCRN) for low-dose CT image noise cancelation, which combines the ideas of dense connection with residual learning. On one hand, dense connection maximizes information flow between layers in the network, which is beneficial to maintain structural details when denoising images. On the other hand, residual learning paired with batch normalization would allow for decreased training speed and better noise reduction performance in images. The experiments are performed on the 100 CT images selected from a public medical dataset-TCIA(The Cancer Imaging Archive). Compared with the other three competitive denoising algorithms, both subjective visual effect and objective evaluation indexes which include PSNR, RMSE, MAE and SSIM show that the proposed network can improve LDCT images quality more effectively while maintaining a low computational cost. In the objective evaluation indexes, the highest PSNR 33.67, RMSE 5.659, MAE 1.965 and SSIM 0.9434 are achieved by the proposed method. Especially for RMSE, compare with the best performing algorithm in the comparison algorithms, the proposed network increases it by 7 percentage points.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2007.10a
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• pp.113-116
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• 2007

T-DMB (Terrestrial-DMB) service is now available in the metropolitan area, but due to the bandwidth limitation, it is allowed to provide up to CIF resolution. As users' requests for high-quality mobile multimedia services are rapidly increasing and additional bandwidth can be provided by adopting the hierarchical modulation transmission technology, the research on the Advanced Terrestrial-DMB(AT-DMB) service using the SVC(Scalable Video Coding) scheme is being actively studied. In this paper, through computer simulations, first, while keeping the current T-DMB service unchanged, the visual qualities of AT-DMB services are investigated by varying the additional bandwidth. Then, by considering the cases that the overall bandwidth can be allowed to dynamically allocate to the T-DMB/AT-DMB video services, the performance characteristics between two layers are compared over the different kinds of video sequences.

• Applied Microscopy
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• v.47 no.2
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• pp.70-74
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• 2017

In the case of genus Nothobranchius, Nothobranchiidae, the morphology of fertilized eggs and ultrastructures of fertilized egg envelopes have been reported in only two fishes. Therefore it is hard for sure to these morphological characteristics show genus specificity because of lower research samples. So, we studied the morphology of fertilized egg, and compared the ultrastructures of outer surface, micropyle, and section of fertilized egg envelopes under the light and electron microscopes from the other two species, Nothobranchius foerschi and Nothobranchius rachovii, Nothobranchiidae to find out whether these structures have the species specificity or not. Both fertilized eggs were spherical, demersal and adhesive, and have a large oil droplet. The adhesive whip-like structures were distributed on the outer surface of egg envelope, and a micropyle located on the animal pole. The fertilized egg envelope consisted of two distinct layers: an outer electron-dense layer with adhesive structures and an inner lamellae layer in both species. The external shapes of fertilized egg and ultrastuctures of outer surface, micropyle, and section of fertilized egg envelope have same structure including results before. Our data indicate that these morphological characteristics of fertilized egg and fertilized egg envelope show genus Nothobranchius specificity.

• The Journal of the Korea Contents Association
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• v.8 no.9
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• pp.84-93
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• 2008

Since 2005, the production of feature 3D animation has been growing up worldwide and technology of hardware and software has been advanced fully enough to get over the limitation of visual expression, so that rendering weight of the whole work process is getting more important. A final file in the state right before rendering increases. the data size gets bigger. Therefore, if such final file is rendered as it is, the production schedule may not be met. For, some needless time shall be spent to call and save a high-capacity file in amendment work and to execute the rendering entirely again in addition to amendment. In this study, Maya API [1]was used to study the efficient information amendment method of extracting the rendering layers' files in order to develop a tool that executes rendering by applying such method. As the result, compliance to production schedule that is important in animation production can be done through the independent rendering tool based layer rendering that can maximize the efficiency of amendment work.