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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 1
Displaying 1-8 of 8 articles from this issue
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...2023 Volume 86 Issue 1 Pages 15-19
Published: February 20, 2023
Released on J-STAGE: February 29, 2024
JOURNAL OPEN ACCESSWe have discussed about true nature of imaging and its future in study group of SHASHIN. New imaging system is produced by fusion of conventional imaging and digital processing. It is important to realize the SHASHIN, which is concept of beyond conventional photograph.View full abstractDownload PDF (707K) -
[in Japanese]2023 Volume 86 Issue 1 Pages 20
Published: February 20, 2023
Released on J-STAGE: February 29, 2024
JOURNAL OPEN ACCESSDownload PDF (191K) -
―1839, the turning point from secret arts to scientific technologies -[in Japanese]2023 Volume 86 Issue 1 Pages 21-31
Published: February 20, 2023
Released on J-STAGE: February 29, 2024
JOURNAL OPEN ACCESSThis report is the first in a series titled “Pioneers in the History of Photographic Technology”.In 1839，the “Da- guerreotype” textbook was published in France, and in England Talbot's “Photogenic Drawing” was presented at the Royal Society. Arago, a French physicist and member of the House of Representatives, was the person who made the secret art of photography public and turned it into a scientific technology. He enacted a bill that would allow the gov- ernment to provide pensions to photographic research that was technically incomplete at the time and could not gen- erate economic value, on the premise that the technology was open to the public. As a result of the disclosure of the technology, the development of technology that could overcome the “Valley of Death” occurred, and a new industry called a photo studio for taking portraits was created.View full abstractDownload PDF (975K) -
[in Japanese]2023 Volume 86 Issue 1 Pages 32-39
Published: February 20, 2023
Released on J-STAGE: February 29, 2024
JOURNAL OPEN ACCESSIn this paper, I explain the technical trend of actuator for smartphone camera and the measurement method of actua- tor characteristics.View full abstractDownload PDF (2493K) -
[in Japanese]2023 Volume 86 Issue 1 Pages 40-45
Published: February 20, 2023
Released on J-STAGE: February 29, 2024
JOURNAL OPEN ACCESSA water surface map useful for mosquito source surveys was created by combining multiple narrow-band aerial im- ages and performing pixel-by-pixel brightness calculations. This water surface map was distributed to researchers' smartphones with a GIS application, enabling them to sys- tematically survey countless puddles and greatly improving the efficiency of mosquito breeding site field surveys.View full abstractDownload PDF (1727K) -
[in Japanese], [in Japanese]2023 Volume 86 Issue 1 Pages 46-49
Published: February 20, 2023
Released on J-STAGE: February 29, 2024
JOURNAL OPEN ACCESSIn recent years, with advances in the precision and miniaturization of optical sensors, it has become possible to mount a camera on a drone and capture images of objects from different heights and angles. In this study, to protect and manage cultural properties and discover new tourism seeds using 3D data, we attempted to create a high-resolution 3D model of the 10-hectare site of Ninna-ji Temple and its five-story pagoda using a 100-million-pixel camera mounted on a drone. The 3D model created had a 3 mm/pixel resolution and could identify the Buddhist characters on the roof tiles. The time from photography to data processing was only about five days, making it possible to collect data effi- ciently and create a detailed 3D model.View full abstractDownload PDF (1647K) -
[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...2023 Volume 86 Issue 1 Pages 50-55
Published: February 20, 2023
Released on J-STAGE: February 29, 2024
JOURNAL OPEN ACCESSIn recent years, UAVs(unmanned aerial vehicles, commonly known as drones)technology has made remarkable progress, and onboard cameras such as multispectral cameras are now being used. Against this backdrop, the drone first photographed the topography and buildings with a conventional camera, and then constructed a 3D model using SfM(Structure From Motion)software. Using the obtained structural data, a full- color modeling object was fabri- cated by a paper-stacked full-color 3D printer. In addition, a multispectral camera was used to index-map the NDVI, which represents the state of the vegetation, and its full-color 3D modeling was created. Furthermore, comparing the NDVI(Normalized Difference Vegetation Index)obtained in the present study with the NDVIs obtained by satel- lites was suggested to be useful for assessing the validity of the NDVI obtained by UAVs.View full abstractDownload PDF (7978K) -
[in Japanese], [in Japanese], [in Japanese]2023 Volume 86 Issue 1 Pages 56-63
Published: February 20, 2023
Released on J-STAGE: February 29, 2024
JOURNAL OPEN ACCESSPlane radiation-sources which had patches of uniform distribution and gradual density change of radioisotope RI in each patch were prepared. The sources were obtained by printing the patches with an ink-jet printer and an ink in- cluding RI on the film base with high ability of ink absorption. Density of RI in each patch was altered by changing print times. Radiation intensity was measured with a Geiger-Mueller counter, a liquid scintillation counter and photo- graphic films. They indicated the uniformity of RI distribution and the linear dependence of RI density on printing times. As glycerol added in the ink to adjust the viscosity was not volatile, the glycerol expanded out of the printing area on large printing times, and this brought about an expansion of the area including RI. We will try to print with ink not-including glycerol.View full abstractDownload PDF (2500K)
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