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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 | Justification | ||||||
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IQ.3.0 | Automation | Shall minimize day to day adjustments during data acquisition and postprocessing. | Automation | |||||||||
Color checker | Shall tag the color checker image | 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 | |||||||||||
Flash (Roller shutter) Intensity | Image Quality | Minimum 200,000 lux | ||||||||||
Flash (Roller shutter) Duration | Image Quality | Minimum of 1/200 sec | ||||||||||
Flash (Global shutter) Intensity | Image Quality | Minimum 1.2M lux | ||||||||||
Flash (Global shutter) Duration | Image Quality | Minimum 1/5000 sec | ||||||||||
Auto focus | Camera shall have auto focus | Image Quality | TRUE/FALSE | |||||||||
Automatic manual focus | If auto focus FALSE then this one is needed | Image Quality | z positional accuracy of 3 cm | |||||||||
1.1 | ISO | The camera shall be configured to avoid analog amplification of pixel values to avoid ISO noise. | Image Quality | ISO=BASE (100 for Sony full frame sensors) Analog amplification of 0dB on pixel readings on non-consumer cameras | Image noise must be kept to a minimum by using the camera’s base ISO while still have an acceptable exposure histogram | |||||||
1.2 | Relative Image Resolution | The camera should provide a minimum soil-level Ground Sample Distance (GSD) | Image Quality | 7-9 pixels per mm (emergence) | 1.3 | MP | ||||||
Depth of field | Image Quality | 1.4 | Sensor size | Full frameMinimum 15 cm | ||||||||
Color temperature | The color temperature shall be consistent | Image Quality | 1.6 | Sensor type | CMOS | Image Quality | 1.7 | Pixel size | Image Quality+/- 200K | |||
Color rendering index | Image Quality | 90 or greater | ||||||||||
1.8 | File type | Shall output RAW and JPG files | Image QualityData | |||||||||
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 trigger camera independently | User Interaction | |||||||||||
Auto focus |
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