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UBC Theses and Dissertations
An inexpensive, high resolution scan camera Wang, Shuzhen
Abstract
The use of digital imaging devices has been growing very fast and having amazing influence over the last decade. Being easier to integrate with other digital media, digital imaging is taking the place of analog imaging in more and more fields. Although the resolution and color quality of digital cameras have reached those of 35mm films, there are still a number of applications which require better quality, such as museum catalogs, professional digital photography and research in image based modeling and rendering. These applications all benefit from high resolution digital imaging. Our work extends digital photography in this particular direction. We present the design of a high-resolution scan camera using a flatbed scanner as the backend of a large format camera. The scan camera we built can take images with the resolution of up to 122 million pixels, while the camera itself can be built from off-the-shelf components for only 2,000 dollars. If we simply attach the two parts of the system together (the large format camera and the flatbed scanner) in their original setup, the system won't work properly because of mechanical and optical constraints. We dealt with these constraints by removing the light source and lenses from the scanner, and aligning the scanner with the imaging plane of the view camera. Due to the changed optics in the scanner, we can not directly use the commercial scanning software from the vendor. Instead, we get the raw image data from the scanner, then do denoising and calibration to acquire high quality images. A more advanced process is proposed to first detect artifact features, then remove them by image inpainting. Finally, some quantitative measurement of the light sensitivity and the optical resolution of the camera are obtained.
Item Metadata
| Title |
An inexpensive, high resolution scan camera
|
| Creator | |
| Publisher |
University of British Columbia
|
| Date Issued |
2003
|
| Description |
The use of digital imaging devices has been growing very fast and having
amazing influence over the last decade. Being easier to integrate with other digital
media, digital imaging is taking the place of analog imaging in more and more fields.
Although the resolution and color quality of digital cameras have reached those of
35mm films, there are still a number of applications which require better quality,
such as museum catalogs, professional digital photography and research in image
based modeling and rendering. These applications all benefit from high resolution
digital imaging. Our work extends digital photography in this particular direction.
We present the design of a high-resolution scan camera using a flatbed scanner
as the backend of a large format camera. The scan camera we built can take
images with the resolution of up to 122 million pixels, while the camera itself can be
built from off-the-shelf components for only 2,000 dollars. If we simply attach the
two parts of the system together (the large format camera and the flatbed scanner)
in their original setup, the system won't work properly because of mechanical and
optical constraints. We dealt with these constraints by removing the light source
and lenses from the scanner, and aligning the scanner with the imaging plane of the
view camera. Due to the changed optics in the scanner, we can not directly use
the commercial scanning software from the vendor. Instead, we get the raw image
data from the scanner, then do denoising and calibration to acquire high quality
images. A more advanced process is proposed to first detect artifact features, then
remove them by image inpainting. Finally, some quantitative measurement of the
light sensitivity and the optical resolution of the camera are obtained.
|
| Extent |
10443435 bytes
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| Genre | |
| Type | |
| File Format |
application/pdf
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| Language |
eng
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| Date Available |
2009-11-17
|
| Provider |
Vancouver : University of British Columbia Library
|
| Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
|
| DOI |
10.14288/1.0051621
|
| URI | |
| Degree | |
| Program | |
| Affiliation | |
| Degree Grantor |
University of British Columbia
|
| Graduation Date |
2004-05
|
| Campus | |
| Scholarly Level |
Graduate
|
| Aggregated Source Repository |
DSpace
|
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Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.