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Volume 86 (2023)
- Issue 4 Pages 356-
- Issue 3 Pages 215-
- Issue 2 Pages 135-
- Issue 1 Pages 15-
Volume 86, Issue 2
Displaying 1-8 of 8 articles from this issue
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―Validity and Challenges of Interoperable Master Format and Matroska Video Format―[in Japanese], [in Japanese], [in Japanese], [in Japanese]2023 Volume 86 Issue 2 Pages 189-195
Published: May 20, 2023
Released on J-STAGE: February 29, 2024
JOURNAL OPEN ACCESSThe main theme of this report is the selection of file formats for long-term preservation, which is one of the major challenges in the long-term preservation of digital cinemas. First, we summarized the perspectives and recent trends in the selection of a file format for long-term preservation. Next, we researched and verified the two file formats, In- teroperable Master Format(IMF)and Matroska Video Format(MKV), which are considered to be strong candi- dates for long-term preservation in the future, with the construction of a workflow for preservation work. The results showed that IMF is suitable as a format for preservation to generate data to be used for utilization, while MKV is a promising format for preservation with the purpose of preserving the authenticity of the original data.View full abstractDownload PDF (665K) -
[in Japanese]2023 Volume 86 Issue 2 Pages 135-142
Published: May 20, 2023
Released on J-STAGE: February 29, 2024
JOURNAL OPEN ACCESSThe Rokuoh-sha style natural color printing method was announced from Konishiroku Co., Ltd.,(currently, Konica Minolta Co., Ltd.)in November 1940. Surviving prints are few in number and they have not been examined in de- tail. Under such circumstances, it was found by the author that those research materials were stored in a certain place in an unorganized state. The place is the Konishi Professional School of Photography, where the developer of this technology, Haruki Egashira, has been involved in education since its foundation, and later Tokyo Institute of Polytechnics Junior College Department. Those materials were titled “Two Thousand Specimens of Mr. Egashira''. As a result of analyzing these materials, it was possible to classify mainly into three types. The first one is three-col- or separation negatives produced from the early Showa 10s(1935-)to around 1943, using “ Sakura Tripack Film.” The second one is a color print by “ Sakura Color Developing Out Paper ”. The third one is actual materials includ- ing those research prototypes.View full abstractDownload PDF (2301K) -
[in Japanese]2023 Volume 86 Issue 2 Pages 151-
Published: May 20, 2023
Released on J-STAGE: February 29, 2024
JOURNAL OPEN ACCESSDownload PDF (164K) -
[in Japanese]2023 Volume 86 Issue 2 Pages 152-156
Published: May 20, 2023
Released on J-STAGE: February 29, 2024
JOURNAL OPEN ACCESSThis paper describes the development of image database system for the Digital Picture Library for Area Studies (DiPLAS), and considers specific methods and issues in constructing and publishing the web information service for pictures.View full abstractDownload PDF (940K) -
- Basic Concepts and Techniques for Preservation and Repair of Library Materials -[in Japanese]2023 Volume 86 Issue 2 Pages 157-162
Published: May 20, 2023
Released on J-STAGE: February 29, 2024
JOURNAL OPEN ACCESSLibraries have materials in a variety of media, including audiovisual materials. This article describes the preservation of paper materials, especially books. Basic concepts, issues and matters to consider in repair are explained. In addi- tion, based on the experience of restoring materials damaged by the tsunami of the Great East Japan Earthquake, the importance of preserving library materials and conveying them on to future generations is described.View full abstractDownload PDF (2011K) -
[in Japanese], [in Japanese]2023 Volume 86 Issue 2 Pages 163-171
Published: May 20, 2023
Released on J-STAGE: February 29, 2024
JOURNAL OPEN ACCESSISO/TC 42 has been promoting the ISO standardization for evaluating permanence of photographic images and for recommended storage conditions. 50 ISO Standards for consumers, commercial and museums have been published, and about 10 new projects are currently under development. Related image forming technologies include silver halide, inkjet, electrophotography, thermal transfer such as D2T2(dye sublimation), and others. ISO Standards on storage stability and recommended storage conditions for digital data recording media have been also published. This paper provides an overview of the contents of the ISO Standards, background discussions and future challenges.View full abstractDownload PDF (1894K) -
[in Japanese]2023 Volume 86 Issue 2 Pages 172-176
Published: May 20, 2023
Released on J-STAGE: February 29, 2024
JOURNAL FREE ACCESSYokohama Civic Art Gallery Azamino, which opened in 2005, houses and manages the Collection of Cameras and Pho- tography of the Yokohama City. The collection consists of approximately 12,000 cameras and photographs that the City of Yokohama acquired from American collector Thurman F. Naylor in 1993 and 1994. The first section of this ar- ticle discusses the preservation and utilization efforts of the collection. The second section reports on the preservation methods of daguerreotypes, which I observed during my research on collection management in the United States in 2018.View full abstractDownload PDF (1133K) -
[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...2023 Volume 86 Issue 2 Pages 177-188
Published: May 20, 2023
Released on J-STAGE: February 29, 2024
JOURNAL OPEN ACCESSMuography is a technique for measuring the density distribution of large objects such as volcanoes by measuring the attenuation rate of high-energy cosmic ray muons. This technique uses the absorption of cosmic ray muons in matter to measure the density distribution like an X-ray image. One of the important issues in muography of volcano is to determine the detailed three-dimensional density structure inside the mountain by increasing the number of observa- tion directions. By observing the same object from multiple directions, it is possible to estimate the three-dimensional density structure like an X-ray CT. This article describes the example of multi-directional muography at Omuroyama scoria cone in Ito City, Shizuoka Prefecture. The authors evaluated the feasibility of a 3D density reconstruction method based on the Filtered Back Projection ap- plied to muography by simulation. Based on this result, the demonstration observations were conducted at Omuroya- ma scoria cone located in Ito City, Shizuoka Prefecture, Japan. A new nuclear emulsion cloud chamber suitable for multi-directional observations was developed, and observations were conducted from 11 directions. As a result, the three-dimensional density structure of Omuroyama was determined, and the structure where magma intruded from the main conduit into the mountain body as dikes was successfully detected. This visualization of volcanic vent is very significant in volcanology and volcano disaster prevention because it has been difficult to visualize one using pre- vious techniques. It is expected that similar methods will be applied to other targets besides volcanoes in the future.View full abstractDownload PDF (3382K)
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