File:UNREPEATABLE-PATTERN SECURITY; like X-ray but just uses torch shining on underside, light coming through transparent plastics, can provide another way to provide such security.jpg
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Summary
[edit]DescriptionUNREPEATABLE-PATTERN SECURITY; like X-ray but just uses torch shining on underside, light coming through transparent plastics, can provide another way to provide such security.jpg |
English: Photo is proof-of-concept regarding whether light shone through unrepeatable-pattern material can create security-pattern images for unrepeatable-pattern security. Conventionally, images would just be captured in the normal way from light reflecting off things. This method captures images created in a different way, perhaps a bit like an X ray. Photo is of a transparent plastic pouch bag, containing mostly transparent plastic pieces (such as from plastic wrapping). Some of the pieces in the pouch are coloured, perhaps semi-transparent. A light is being shone from the underside of the pouch. |
Date | |
Source | Own work |
Author | MarkJFernandes |
Licensing
[edit]This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. | |
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
http://creativecommons.org/publicdomain/zero/1.0/deed.enCC0Creative Commons Zero, Public Domain Dedicationfalsefalse |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 16:51, 30 September 2020 | 3,245 × 4,040 (1.46 MB) | MarkJFernandes (talk | contribs) | Cross-wiki upload from en.wikibooks.org |
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Metadata
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Camera manufacturer | Canon |
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Camera model | Canon PowerShot SX600 HS |
Exposure time | 1/30 sec (0.033333333333333) |
F-number | f/3.8 |
ISO speed rating | 100 |
Date and time of data generation | 19:19, 24 September 2020 |
Lens focal length | 4.5 mm |
Bits per component | 6 |
Orientation | Normal |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
Software used | Chrome OS Gallery App |
File change date and time | 17:12, 24 September 2020 |
Y and C positioning | Co-sited |
Exif version | 2.3 |
Date and time of digitizing | 19:19, 24 September 2020 |
Meaning of each component |
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Image compression mode | 3 |
APEX shutter speed | 4.90625 |
APEX aperture | 3.84375 |
APEX exposure bias | 0 |
Maximum land aperture | 3.84375 APEX (f/3.79) |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 18,962.962962963 |
Focal plane Y resolution | 18,989.010989011 |
Focal plane resolution unit | inches |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Scene capture type | Standard |
GPS tag version | 0.0.3.2 |