The multispectral drone camera is a turnkey multispectral imaging solution for easy integration into drones with PixHawk flight controllers enabling capture of geotagged aerial images for further analysis in data mapping software.

Note:If errors or omissions in this sheet are found during use, please contact us for the most up to date information.

Feature

-Includes a snapshot multispectral camera,  a lens,a vision computer, and a high

-performance 3-axis gimbal (optional)

-Compatible with common drone platforms 

-Energy-efficient, lightweight

-Fully configured with camera control and image capture software

-Images can be saved to SD card at up to 10 FPS

-Start and stop buttons control image capture on demand.

- A live multispectral video feed is available for downlink.

Customization of multispectral drone cameras is also available,If you need assistance in how to choose a multispectral drone camera,please Click Here.

-Miniature light-weight design

Camera and vision computer have a combined weight of less than 200 grams. Add a 3-axis gimbal and a low distortion lens and the total system weight is under 900g.

-Geotagged multispectral images

Geotag multispectral images with industry standard software.

RGB-NIR Drone Camera

-Hve red, green, blue, and NIR spectral channels(NIR channel is sensitive to near infrared light from 750 nm to 1000 nm)

-The amount of cross-talk between channels is much lower

Agriculture Drone Camera

-Offer multispectral imaging across 4 bands(separately sensitive to  live vegetation,the NDVI red channel,the 'red edge' channel and  the NDVI NIR channel)

8-Band Visible Drone Camera

-Provides nearly equally spaced bands across the visible spectral range

-Compared to our 4-band cameras, the 8-band visible camera offers 3-fold higher sensitivity

8-Band NIR Drone Camera

-0ffer nearly equally spaced bands across the near-infrared spectral range

-Compared to our 4-band cameras, the 8-band NIR camera offers 3-fold higher sensitivity

Spectral response of different filter set 

RGB-NIR Camera

Agriculture Camera

8-Band NIR Camera

8-Band Visible Camera

Example of a reconstructed image set collected with an multispectral agriculture drone camera.  The color and NDVI images represent composites reconstructed from 168 AGRI multispectral images.  In this case, a false color image was generated from the 580nm (green), 660nm (red), and 735nm (blue) bands (FALSE COLOR).  An NDVI image displayed with a fire look up table shows areas of chlorophyll-rich vegetation in red and vegetation with less chlorophyll in blue (NDVI).  NDVI was computed using the NIR (820nm) and Red (660nm) bands.  A black and white image computed using all 4 bands (B/W IMAGE).  These data were also reconstructed into a 3D model of the terrain with a variety of overlays (3D FALSE COLOR, 3D NDVI, and 3D B/W IMAGE).  These overlays highlight the precise co-registration of the various computed data sets.  Images were captured every 3m at a flight speed of 5m/s and altitude of 33m.  Exposure time was 2.8ms per frame.  The camera was fitted with a 16mm standard lens with an aperture setting of f/2.8. The field of view per frame was 23.23m x 23.23m with a ground pixel size of 4.5cm x 4.5cm (2.3cm x 2.3cm debayered).  Image processing was performed with Spectral Devices multispectral batch processing software and 3DF Zephyr Lite (3Dflow Srl).  All images were down-sampled for web viewing.

Customization of multispectral drone cameras is also available,If you need assistance in how 

to choose a multispectral drone camera,please Click Here.

Camera and Vision 

Computer

Lockable, Ruggedized

 Lens

128 GB MicroSD card

& Adaptor

Camera and Vision

 Computer

Cables to Bottom 

Gimbal End

Camera Trigger

IN/OUT from Gimbal

 to  Pixhawk

1. Access SD card on a computer system, such as a laptop.

2. Modify the configuration file with a text editor such as Windows Notepad modifying the desired acquisition parameters in the /cfg/mscapture.cfg file, such as exposure time (ExposureTime key), interval between frames (InterFrameInterval key), trigger mode (TriggerMode key). See User Manual for complete list of keys.

3. Eject the SD card and insert it into the microSD slot of the vision computer.

4. Power up the vision computer and wait for LED1 to blink slowly. The 5V POWER LED will glow blue when power is applied to the barrel connector even with the vision computer is shutdown. This provides a quick check of availability of external power to the vision computer.

5. Click SWITCH2 to begin acquisition. LED2 will blink during acquisition.

6. Click SWITCH2 a second time to stop acquisition. LED2 will stop blinking.

7. Steps 5 and 6 can be repeated many times to start/stop image acquisition. Files will be saved with unique filenames. However, old files wie on the SD cll be overwritten if the vision computer is shut down and restarted.

8. Click SWITCH1 (1 time) until a fast blink on LED1 is observed. The vision computer is now in shut down mode.

9. Click SWITCH2 once to shut down the vision computer.

10. Remove the SD card from the vision computer.

11. Image and log files available on SD card in /frames and /logs folders for viewing, transfer, and analysis.Power up of the vision computer takes approximately 15 s to complete. Shutdown takes approximately 5 s to complete. Do not remove the SD card while the vision computer is powered on or off since data loss could occur.

Summary of acquisition operation 

After connecting the system to the power, the vision computer boots up in under 20 seconds and LED 1 on the vision computer starts blinking slowly (normal acquisition mode). To begin image capture, click the start/stop button, the camera goes to capture mode and it waits to receive a trigger from Pixhawk. IF the configuration file has been set for timed mode, the images will be collected at a set Interframe Interval. In this state, both LED 1 and LED2 blink slowly. Once the camera receives a trigger signal from Pixhawk, the camera captures an image and saves the image in the frames folder on the SD card. At the same time, the camera sends a trigger signal back to the Pixhawk that the frame was captured. The pixhawk records a CAM_message that the image was captured successfully. In order to go back to normal acquisition mode and stop capture mode, click on start/stop button again. LED 1 will blink slowly. To shut down the vision computer, click the MODE button. LED1 will blink rapidly. Press the start/stop button. The vision computer will shut down. In this state, only the blue LED will remain on. It is safe to remove the SD card after LED 1, LED 2, and LED 3 go dark.

Real-Time Video Display

During image acquisition, the vision computer provides a real-time multispectral video output to the HDMI port. Users can observe the camera frames as they are acquired as well as supporting information in a table to the left of the frame. This feature is useful for focusing the camera lens and testing camera settings. Pixels in a frame with values at the top of the dynamic range will be highlighted in red. These red pixels may indicate areas of over-exposure. The HDMI port video can be downlinked to the ground controller using one of several available transceivers (contact us for options). Details of downlink setup are available in the MSDC manual.

Geotagging Images with Mission Planner

Users can geotag images post flight using Mission Planner to inject data from telemetry logs into their EXIF image tags. Geo-tagging images makes it easier to merge images taken during a camera mission,and is important for applications including photogrammetry, orthomosaic map generation, 3D terrain modeling, and large surveys.

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