scholarly journals Using DSLR to 'Scan' Colour Slides: learning from the Digitising Jemdet Nasr 1988–1989 Project

2020 ◽  
Author(s):  
Mónica Palmero Fernández
Keyword(s):  
Dynamic Range ◽  
Cost Effective ◽  
Archaeological Site ◽  
High Dynamic Range ◽  
Photographic Film ◽  
Film Scanner ◽  
Cost Effective Method ◽  
High Dynamic ◽  
University Department ◽  
The Cost

This article presents a cost-effective method for digitising photographic film for archival purposes using a DSLR camera, focussing on the widely used colour reversal Kodachrome film produced by Eastman Kodak between 1935 and 2009. I discuss the digitisation of an archive of 787 Kodachrome slides taken between 1988 and 1989 during the excavation of Jemdet Nasr, an archaeological site located in southern Iraq (Project website). I compare results obtained using a film scanner (Nikon Coolscan IV ED) with two different scanning software solutions (SilverFast and VueScan), a flatbed scanner (HP Scanjet 8300), and two DSLR cameras with macro lens (a Canon EOS KissX3 with 105mm lens and a Canon EOS 80D with 90mm lens). The results demonstrate the cost-effective value of the DSLR method for archives where time and resources are limited, but where digital photography equipment might be readily available, such as an archaeological unit or a university department. The method allows for high quality, fast and economical digitisation of excavation and collection archives that will enhance research. The method also offers superior results in rendering the high dynamic range of photographic film such as Kodachrome.

scholarly journals Application of Structure from Mortion in Japanese Archaeology

2015 ◽  
Vol XL-5/W7 ◽  
pp. 235-239 ◽  
Author(s):  
A. Kaneda ◽  
Y.A. Nawabi ◽  
H. Yamaguchi
Keyword(s):  
Cost Effective ◽  
Archaeological Site ◽  
3 Dimensional ◽  
Archaeological Data ◽  
Cost Effective Method ◽  
Complicated Form ◽  
Long Time ◽  
Aerial Vehicle ◽  
The One ◽  
The Cost

In Japan, archaeological excavations carry out over fifty thousand times per year. Nowadays, archaeological data is accumulated day by day. To record these documentation about archaeological data, it is desirable to the documentation of their shape in 3-dimensional form. Structure from Motion (SfM) is the one of the cost effective method to record the 3D documentation. This paper introduces application of SfM technology to examine the validity of an archaeological documentation in Japanese archaeology in recent year. Whenever, a complicated form finding has to be recorded at an archaeological excavation. It often requires a long time to create by a traditional manual drawing. For example, a well made of reuse roof tiles, garden stones and stone chamber. By using SfM, the time spent working at the archaeological site was greatly reduced. And many platforms to take an image at the variety of archaeological site's condition, like a small UAV (Unmanned Aerial Vehicle) are tested using for wider area recording. These methods are used in disaster stricken areas in East Japan.

Cost-effective multi-camera array for high quality video with very high dynamic range

2014 ◽  
Author(s):  
Joachim Keinert ◽  
Marcus Wetzel ◽  
Michael Schöberl ◽  
Peter Schäfer ◽  
Frederik Zilly ◽  
...  
Keyword(s):  
Dynamic Range ◽  
Cost Effective ◽  
High Dynamic Range ◽  
High Quality ◽  
Camera Array ◽  
Quality Video ◽  
High Dynamic ◽  
High Quality Video ◽  
Very High

Fast Tone Mapping Based on Sorting

2013 ◽  
Vol 397-400 ◽  
pp. 2318-2321
Author(s):  
Feng Qin Liu ◽  
Yi Guang Zhang ◽  
Zhen Chao ◽  
Peng Miao
Keyword(s):  
Dynamic Range ◽  
Hardware Acceleration ◽  
Cost Effective ◽  
High Dynamic Range ◽  
Mapping Technique ◽  
Tone Mapping ◽  
Range Data ◽  
Range Image ◽  
Double Precision ◽  
High Dynamic

Visualizing high dynamic range image or video on traditional display devices need fast tone mapping technique. Traditional bin-based histogram equalization is fast enough but cannot handle high dynamic range data, e.g. single or double precision. Other common tone mapping methods require a high computational complexity. In this paper, we propose a new continuous data equalization method based on simple sorting, which can quickly and efficiently enhance the visualization of high dynamic range data. This method can be applied to real-time visualization of high dynamic range video with cost effective hardware acceleration.

High-dynamic-range interferometric bragg-cell spectrum analyser

1986 ◽  
Vol 133 (1) ◽  
pp. 26
Author(s):  
J. Mellis ◽  
G.R. Adams ◽  
K.D. Ward
Keyword(s):  
Dynamic Range ◽  
High Dynamic Range ◽  
Spectrum Analyser ◽  
High Dynamic

CAD Of Anticorrosive Protection Of Steel Structures

2019 ◽  
pp. 18-23
Keyword(s):  
Protective Coating ◽  
Computer Aided Design ◽  
Steel Structures ◽  
Cost Effective ◽  
Operating Conditions ◽  
Computational Tool ◽  
Protection Method ◽  
Cost Effective Method ◽  
The Cost ◽  
Aided Design

The choice of cost-effective method of anticorrosive protection of steel structures is an urgent and time consuming task, considering the significant number of protection ways, differing from each other in the complex of technological, physical, chemical and economic characteristics. To reduce the complexity of solving this problem, the author proposes a computational tool that can be considered as a subsystem of computer-aided design and used at the stage of variant and detailed design of steel structures. As a criterion of the effectiveness of the anti-corrosion protection method, the cost of the protective coating during the service life is accepted. The analysis of existing methods of steel protection against corrosion is performed, the possibility of their use for the protection of the most common steel structures is established, as well as the estimated period of effective operation of the coating. The developed computational tool makes it possible to choose the best method of protection of steel structures against corrosion, taking into account the operating conditions of the protected structure and the possibility of using a protective coating.

High Dynamic Range Images and Tone Mapping Operator

2009 ◽  
Vol 35 (2) ◽  
pp. 113-122 ◽  
Author(s):  
Ke-Hu YANG ◽  
Jing JI ◽  
Jian-Jun GUO ◽  
Wen-Sheng YU
Keyword(s):  
Dynamic Range ◽  
High Dynamic Range ◽  
Tone Mapping ◽  
Range Images ◽  
High Dynamic
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