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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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1.1 | Image quality | Shall exceed state-of-the-art image quality standards to align with future use cases and camera systems. | Image Quality | |||||
1.2 | Image Resolution | Shall meet the allowable limits for GSD (Ground Sample Distance) | Image Quality | 9.1 pixels per mm (emergence) 5.9 pixels per mm (late growth stage) | ||||
Minimum resolution | ||||||||
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 | ||||||
Depth of field | With a set of base assumptions, the produced depth of field is 16.9 cm, corresponding to a far and near limit at 1.74 m and 1.57 m respectively. This is based on a pixel size of 3.76um in a full frame sensor setup at 61 megapixel, a 55mm lens, an aperture of F13 and a distance from the camera to the plant of 1.65 meter. As the aperture is physically decreased, the depth of field in increase, at the cost of decreased optical resolution due to diffraction. | Image Quality | ||||||
Circle of confusion | ||||||||
1.8 | File type | Shall output RAW and JPG files | Image Quality | |||||
IQ 3.1 | File architecture | Shall create a folder per data collection day and save files in such folder | ||||||
IQ.2.0 | Plant size | Shall support plant sizes with a height ranging from 0 cm to 40 cm above the pot soil | ||||||
IQ.2.1 | Plant size | Shall reliably support plant sizes with a planar radius of 30 cm at soil level, centered at each pot. | ||||||
IQ.3.0 | Automation | Shall minimize day to day adjustments. These include aperture control during image collection, and preprocessing and white balancing in post | ||||||
IQ.4.0 | Visual feedback | Should provide visual feedback to the user for manual inspection of errors during data collection | User InterfaceInteraction | |||||
Auto focus | ||||||||
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 | ||||||
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 captured from weather station | Metadata | Weather station | Shall have a Captured from on site weather station | Metadata | |||
Light sensorinformation | Shall have provide incident light sensor information per image | Metadata | Sensor positioned near cameraMetadata | |||||
Shall allow the user to enter metadata | User InterfaceInteraction | |||||||
Shall allow the user to share data | User InterfaceInteraction | |||||||
Shall allow the user to control the botUser Interaction | User InterfaceInteraction | |||||||
Shall allow the user to change camera settings | User InterfaceInteraction | |||||||
Shall allow the user to trigger camera independently | User InterfaceInteraction | |||||||
Camera position | Shall provide camera position and orientation | Metadata | +/- 1 cm +/- 1o | |||||
Internet connection | Good to have | |||||||
Images shall overlap | 65% |
Emergent design properties
Camera position | RTK | Shall have individual images tagged with RTK position information (x,y,z) |
Camera position | IMU | Shall have IMU data for camera position at each capture event |
Weather information | Weather station |
Sensor Requirements
Key | Summary | Specification | Allowable Limits | Status |
|---|---|---|---|---|
S.1.0 | Auto focus | should be designed to | ||
S.2.0 | ||||
S.3.0 | ||||
S.4.0 | ||||
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