Five alternative models for an infrared plant health camera.
- 1) One camera with a filter switcher which switches between IR block and IR pass filters
- 2) Two cameras, one unmodified and one with an IR pass filter
- 3) One camera with a "superblue" (Schott BG3) filter.
- 4) Two cameras, one unmodified and one with a "superblue" filter.
- 5) One camera with a filter switcher which switches between a normal IR block filter and a "superblue" filter.
|number of cameras||1||2||1||2||1|
|normal RGB color output||Y||Y||N||Y||Y|
|optics modified for RGB image?||Y||N||na||N||Y|
|shutter sync for NDVI||N||Y||N||N||N|
|shutter sync for NRG||N||Y||na||Y||N|
|filter switcher sync for NDVI||Y||N||N||N||N|
|filter switcher sync for NRG||Y||N||N||N||Y|
|rectification for NDVI||Y||Y||N||N||N|
|rectification for NRG||Y||Y||na||Y||Y|
|parallax for NDVI||N||Y||N||N||N|
|parallax for NRG||N||Y||na||Y||N|
|RGB/NIR synchrony possible?||N||Y||Y||Y||N|
|buy superblue filter?||N||N||Y||Y||Y|
1.Shutter sync: Is it necessary to synchronize the shutters of two cameras to make multispectral images when the cameras or subject are moving?
2.Filter switcher sync: Is it necessary to synchronize the camera shutter with the switching of filters?
3.Rectification: Is it necessary to rectify (align) data from two different photos to make multispectral images?
4.Parallax: Is rectifying two images subject to parallax errors when subjects in the scene are both near and far from the camera?
5.RGB/NIR synchrony: Is it possible to capture all the data needed for multispectral images simultaneously (which is needed when the camera[s] or subject are not stationary)?