Difference between revisions of "Aerial photos"
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(Created page with "Information of camera's model, focal length, flight height, photo scale information sometimes can be found on the aerial photo <br> file: Example of info on the aerial photo...") |
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| + | ==Focal length and altitude== | ||
Information of camera's model, focal length, flight height, photo scale information sometimes can be found on the aerial photo <br> | Information of camera's model, focal length, flight height, photo scale information sometimes can be found on the aerial photo <br> | ||
[[file: Example of info on the aerial photo.jpeg|800 px]] | [[file: Example of info on the aerial photo.jpeg|800 px]] | ||
Thus, we can use the simple equations in [https://gis-lab.info/docs/books/aerial-mapping/cr1557_06.pdf this document] tp estimate the unknown information of the old aerial photo. | Thus, we can use the simple equations in [https://gis-lab.info/docs/books/aerial-mapping/cr1557_06.pdf this document] tp estimate the unknown information of the old aerial photo. | ||
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| + | ==Type of camera== | ||
| + | * Usually, the old aerial photo in Taiwan is taken by 6 inch lens. | ||
| + | * We found some old aerial photos are wide format in Eastern Taiwan. | ||
| + | * The camera model is not known for now, but it is likely to be Fairchild K17 with Metrogon lens | ||
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| + | ==申請中研院數化老航照資料== | ||
Latest revision as of 03:42, 7 October 2021
Focal length and altitude
Information of camera's model, focal length, flight height, photo scale information sometimes can be found on the aerial photo
Thus, we can use the simple equations in this document tp estimate the unknown information of the old aerial photo.
Type of camera
- Usually, the old aerial photo in Taiwan is taken by 6 inch lens.
- We found some old aerial photos are wide format in Eastern Taiwan.
- The camera model is not known for now, but it is likely to be Fairchild K17 with Metrogon lens
