![]() ISO Less than 200 is better in terms of noise. If the shutter speed is less than 1/30, use tripod to clamp the camera to avoid blur.Įxposure has three factors. F-number should be big (than 15) to get deep focus. => Use manual exposure First decide ISO and F-number. EXIF: meta data attached to image fileĮxposure Basically, constant exposure is better. It's safe to use the standard focal length when filming. If EXIF is not available, the software assumes that the picture is taken at "35mm equivalent focal length 50mm". PhotoScan uses EXIF to get its focal length for calculation. => 35mm equivalent focal length = 50mm In CANON EOS 7D, this is about 35mm focal length lens. Good focus (deep focus) Ways to get deep focus 1) Short focal length => Do not use much zooming in Set camera closer to the object Use bigger object 2) Small aperture (big F-number) => Do in a bright room (cloudy is better) Use much light Use big ISO, but not so muchįocal length The software has standard focal length assumption. Searches the corresponding feature points automatically. error Uses image processing algorithm to get as much feature points on a given images. In order to reduce errors in obtaining feature points. In order to get good quality Whatever software you're using: 2) Prepare good pictures ![]() In order to get good quality Whatever software you're using: 1) Choose appropriate object Too much convex-concave All black (no texture) Shiny, transparent Presentation on theme: "Nov Visualization with 3D CG"- Presentation transcript:Ĭomparison of photogrammetry software (Wikipedia): 123D (Autodesk) Recap360 (Autodesk) ReMake (Autodesk) Good quality Server side engine Free to use (student) (Now it’s unified to “ReCap Photo”) PhotoScan (Agisoft) Standalone local engine Good quality, too Commercial software(179$ - )
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |