CDLI tablet

Ashmolean Museum, Processing: 10 (2023-07-22)

Created by: Wagensonner, Klaus

Using dome captures (I)

Much work is being done on developing an online RTI-viewer, which allows to adjust the light angles in a web-based environment (see, for instance, the Portable Light Dome). In the meantime captures taken by the camera dome can be used to gain a good 2D-result. It must be stressed that this process cannot be automatised. Each side need to be treated individually. The end result sometimes may seem over-edited, but it is aimed at provided the most readable result. After processing the raw files to a PTM file, this file is opened in a locally installed RTI-viewer (see earlier posts). Depending on the curvature of the object either three or four images with different light angles need to be exported. On the left-hand side three such exported shots of Ashm 1922-176 are shown with indication of the various light sources (yellow points on green). Image 1 uses light from the upper left corner, Image 2 from the lower left corner and Image 3 from the right side. (1) In a first step all three shots are opened in Photoshop. First, Image 2 is copied onto Image 1. Since on Image 2 the light comes from the lowerleft corner, we can select the areas of better visibility. (2) The selection needs to be feathered in order to avoid sharp borders and have a smooth transition between the different images. That being done the selection is copied into a new layer. The original Image 2 can now be removed. In some cases one of the layers needs some adjustments. Of course, parts of Image 3 still need to be blended over this result. This will be shown in tomorrow's post.

credit: Wagensonner, Klaus

Cite this Cdli Tablet

CDLI contributors. 2025. Cuneiform Digital Library Initiative. July 30, 2025. https://cdli.earth/cdli-tablet/237.
CDLI contributors. (2025, July 30). Cuneiform Digital Library Initiative. https://cdli.earth/cdli-tablet/237
CDLI contributors (2025) Cuneiform Digital Library Initiative. Available at: https://cdli.earth/cdli-tablet/237 (Accessed: July 30, 2025).
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	note = {[Online; accessed 2025-07-30]},
	author = {{CDLI contributors}},
	year = {2025},
	month = {jul 30},
	title = {},
	url = {https://cdli.earth/cdli-tablet/237},
	howpublished = {https://cdli.earth/cdli-tablet/237},
}

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PY  - 2025
ID  - temp_id_180023290152
M1  - 2025/7/30/
TI  - 
UR  - https://cdli.earth/cdli-tablet/237
ER  - 

Cite this Cdli Tablet

CDLI contributors. 2025. Cuneiform Digital Library Initiative. July 30, 2025. https://cdli.earth/cdli-tablet/237.
CDLI contributors. (2025, July 30). Cuneiform Digital Library Initiative. https://cdli.earth/cdli-tablet/237
CDLI contributors (2025) Cuneiform Digital Library Initiative. Available at: https://cdli.earth/cdli-tablet/237 (Accessed: July 30, 2025).
@misc{CDLI2025,
	note = {[Online; accessed 2025-07-30]},
	author = {{CDLI contributors}},
	year = {2025},
	month = {jul 30},
	title = {},
	url = {https://cdli.earth/cdli-tablet/237},
	howpublished = {https://cdli.earth/cdli-tablet/237},
}

TY  - ELEC
AU  - CDLI contributors
DA  - 2025/7/30/
PY  - 2025
ID  - temp_id_262967873213
M1  - 2025/7/30/
TI  - 
UR  - https://cdli.earth/cdli-tablet/237
ER  - 
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