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Assumptions
The Image Aquisition System will be a payload on the BenchBot, and can rely on the BenchBot meeting its stated requirements.
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Id | Requirement name | Description | Category | Allowable Limits | Status | Solution | ||||||||||||||||||||
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IQ.3.0 | Automation | Shall minimize day to day adjustments during data acquisition and postprocessing. | Automation | |||||||||||||||||||||||
IQ.2.1 | Plant size | Shall reliably support plant sizes with a planar radius of 30 cm at soil level, centered at each pot. | Data | |||||||||||||||||||||||
Could support multiple sensors simultaneously | Data | |||||||||||||||||||||||||
Images shall overlap | Data | 65% | ||||||||||||||||||||||||
IQ 3.1 | File architecture | Shall create a folder per data collection day and save files in such folder | Data | |||||||||||||||||||||||
IQ.2.0 | Plant size | Shall support plant sizes with a height ranging from 0 cm to 40 cm above the pot soil | Data | |||||||||||||||||||||||
Internet connection | Good to have | |||||||||||||||||||||||||
1.1 | Image quality | Image noise must be kept to a minimum by using to the camera’s base ISO while still have an acceptable exposure histogram | Image Quality | ISO=BASE (100 for Sony full frame sensors) | ||||||||||||||||||||||
1.2 | Relative Image Resolution | The camera should provide a soil-level Ground Sample Distance (GSD) of minimum 8 pixels per mm. | Image Quality | 7-9 pixels per mm (emergence) | ||||||||||||||||||||||
1.3 | MP | Image Quality | ||||||||||||||||||||||||
1.4 | Sensor size | Full frame | Image Quality | |||||||||||||||||||||||
1.6 | Sensor type | CMOS | Image Quality | |||||||||||||||||||||||
1.7 | Pixel size | Image Quality | ||||||||||||||||||||||||
1.8 | File type | Shall output RAW and JPG files | Image Quality | |||||||||||||||||||||||
Species ID | Shall provide species ID for each pot in X, Y position | Metadata | ||||||||||||||||||||||||
Weather info | Shall have accurate local weather data information for each run | Metadata | Captured from on site weather station | |||||||||||||||||||||||
Light information | Shall provide incident light information per image | Metadata | Sensor positioned near camera | |||||||||||||||||||||||
Camera position | Shall provide absolute and relative camera position and orientation | Metadata | +/- 1 cm +/- 1o | |||||||||||||||||||||||
Image metadata | Shall provide ISO and Shutter Speed | Metadata | ||||||||||||||||||||||||
Shall allow the user to change camera settings | Not a general requirement | |||||||||||||||||||||||||
Image throughput | Shall be able to capture images of 500 pots in less than 4 hours (500 images) | Speed and Throughput | ||||||||||||||||||||||||
Data transfer speed | Shall be such that does not jeopardize the minimum required image throughput. | Speed and Throughput | ||||||||||||||||||||||||
IQ.4.0 | Visual feedback | Should provide visual feedback to the user for manual inspection of errors during data collection | User Interaction | |||||||||||||||||||||||
Shall allow the user to enter metadata | User Interaction | |||||||||||||||||||||||||
Shall allow the user to share data | User Interaction | Shall allow the user to control User Interaction | User Interaction | Shall allow the user to change camera settings | User Interaction | |||||||||||||||||||||
Shall allow the user to trigger camera independently | User Interaction | 1.3 | Flash | The flash should be dominant relative to natural sunlight. As sunlight can reach an intensity of 98.000 lux, the flash should ideally fire with twice the intensity. | Circle of confusion | IQ 3.1 | File architecture | Shall create a folder per data collection day and save files in such folder | Data | IQ.2.0 | Plant size | Shall support plant sizes with a height ranging from 0 cm to 40 cm above the pot soil | Data | IQ.2.1 | Plant size | Shall reliably support plant sizes with a planar radius of 30 cm at soil level, centered at each pot. | Data | IQ.3.0 | Automation | Shall minimize day to day adjustments. These include aperture control during image collection, and preprocessing and white balancing in post | Automation | |||||
Auto focus | Images shall overlap | Data | 65% |
Emergent design properties
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