Multispectral camera
Geoscan Pollux

An integrated tool for agricultural land assessment

Geoscan Pollux

Пять независимых каналов

Five independent
bands

5.2cm GSD at 120m

5.2cm GSD
at 120m

Image size 1440x1080

Image size
1440x1080

Full support in Agisoft Metashape

Full support
in Agisoft Metashape

Lenses - 8mm F/1.8

IMX273 Sony
Pregius sensors

Narrowband filters

Type-C socket

MicroSD card slot

Integrated Wi-Fi for setting up
and controlling the camera

Geoscan Pollux

This is a multispectral digital camera designed and manufactured by Geoscan with the use of the latest components and technologies.

Compared with competitors, Geoscan Pollux is distinguished for its higher detail and performance, thanks to the 1.5 MP Sony sensors and fast lenses at all the five bands.

Product design – Usaev Design

History of creation

Advantages

Higher performance

Due to the 1440x1080 image size, the survey area for 1 flight is increased by 12.5% in comparison with competitors of the same price category.

Low noise and global shutter

Geoscan Pollux uses IMX273 Sony Pregius sensors with 12-bit ADC which deliver low noise and wide dynamic range. Global shutter prevents blurry images caused by the UAV movements.

Multifunctionality

Geoscan Pollux makes it possible to create vegetation index maps and RGB orthomosaics in the same flight.

Easy data analysis

Agisoft Metashape automatically groups images into separate bands and performs image calibration by metadata. Vignetting is being corrected when images are added into the project.

Углубляясь в детали

Детали

Going into detail

Higher image size and longer focal lengths make images more detailed. For example, from fixed-wing UAVs, which minimum altitude is limited, Geoscan Pollux makes it possible to obtain GSD of 5.2cm (at 120m AGL).

Comparison with competitors

Pollux

5

Camera 1

5

Camera 2

4

Camera 3

6

Pollux

1,55

Camera 1

1,2

Camera 2

1,2

Camera 3

1,2

Pollux

1440x1080

Camera 1

1280x960

Camera 2

1280x960

Camera 3

1280x960

Pollux

3,45

Camera 1

3,75

Camera 2

3,75

Camera 3

3,75

Pollux

8

Camera 1

5,4

Camera 2

3,98

Camera 3

5,2

Pollux

5,2

Camera 1

8,3

Camera 2

11,3

Camera 3

8,65

Pollux

413

Camera 1

368

Camera 2

368

Camera 3

368

Pollux

Yes

Camera 1

Yes

Camera 2

Separate sensor with a rolling shutter

Camera 3

Yes

Pollux

microSD

Camera 1

SD

Camera 2

64Gb+SD

Camera 3

microSD

^*

The value of the area in hectares is indicated for a fixed-wing UAV. The calculation was performed in the Geoscan Planner software for a rectangular flight mission with the north-south direction of the lines, the overlap 70 by 60, a spacing factor of 2.

	Pollux	Camera 1	Camera 2	Camera 3
Number of bands	5	5	4	6
Number of pixels, MP	1,55	1,2	1,2	1,2
Image size	1440x1080	1280x960	1280x960	1280x960
Pixel size, μm	3,45	3,75	3,75	3,75
Focal length, mm	8	5,4	3,98	5,2
GSD at 120 m, cm	5,2	8,3	11,3	8,65
Survey area in 90 minutes (10 cm/pix), ha^*	413	368	368	368
RGB output	Yes	Yes	Separate sensor with a rolling shutter	Yes
Storage	microSD	SD	64Gb+SD	microSD

^*

The value of the area in hectares is indicated for a fixed-wing UAV. The calculation was performed in the Geoscan Planner software for a rectangular flight mission with the north-south direction of the lines, the overlap 70 by 60, a spacing factor of 2.

Transmission characteristics of filters

Wavelength of maximum
transmittance, nm

470

FWHM, nm

28

Band

Blue

Wavelength of maximum
transmittance, nm

560

FWHM, nm

20

Band

Green

Wavelength of maximum
transmittance, nm

665

FWHM, nm

14

Band

Red

Wavelength of maximum
transmittance, nm

720

FWHM, nm

12

Band

Red Edge

Wavelength of maximum
transmittance, nm

840

FWHM, nm

40

Band

IR

The Geoscan Pollux Multispectral Camera provides simultaneous captures in five narrow bands (12-40 nm). In addition to the main bands of the visible spectrum (Blue, Red and Green), the camera registers Red Edge and IR, which makes it possible to calculate various vegetation indices: SAVI, NDVI, NDRE, LAI, etc.

Survey data can also be used to build digital terrain models and pseudo-color composites, allowing to achieve color separation of cultivated plants and weeds.

Parameter

Value

Weight

No more than 260 g

Number of bands

5

RGB shooting capability

Yes

Image size

1440х1080

Number of sensor pixels

1,55 MP

Pixel size

3,45 μm

Typical size of the sensor

1/2,9 inch

Electronic shutter type

With global shutter

Sensor diagonal

6,3 mm

Lens focal length

8 mm

EFL in 35 mm equivalent

44,4

Angle of view (diagonal)

43°

Hyperfocal distance

11,5 m

Memory card type

microSDXC

Image record format

TIFF 16 bit

Power supply

7 - 15 V

Power consumption

Average 4 W / Maximum 10 W

Data examples

Single frame (5 bands, ~10 MB)

Single frame
(5 bands, ~10 MB)

Download

Raw images (whole flight, ~8.4 GB)

Raw images
(whole flight, ~8.4 GB)

Download

Orthomosaics (5 bands, ~3.5 GB)

Orthomosaics
(5 bands, ~3.5 GB)

Download

Agisoft

Agisoft Metashape Professional photogrammetric software

This is a software that maximizes the possibilities of photogrammetry. It incorporates machine learning technologies for analysis and post-processing to deliver the highest accuracy results.

Metashape Professional Edition

Input Data

Position of photo centers and overlap of photos.

Position of photo centers and overlap of photos.

Fig. 1. Position of photo centers
and overlap of photos.

Total images:

4,185

Height of flight:

129 m

Resolution:

5,53 cm/pix

Cover area:

0.471 km²

Shooting positions:

4,180

Connecting points:

1,750,991

Projections:

10,331,518

Reprocessing error:

1,4 pixels

Fig. 1. Position of photo centers
and overlap of photos.

Camera model	Image size	Focal length	Pixel size	Calibration
Pollux, Blue (8mm)	1440 x 1080	8 mm	3,45 x 3,45 µm	N/A
Pollux, Green (8mm)	1440 x 1080	8 mm	3,45 x 3,45 µm	N/A
Pollux, Red (8mm)	1440 x 1080	8 mm	3,45 x 3,45 µm	N/A
Pollux, RedEdge (8mm)	1440 x 1080	8 mm	3,45 x 3,45 µm	N/A
Pollux, NIR (8mm)	1440 x 1080	8 mm	3,45 x 3,45 µm	N/A

Table 1. Cameras.

Camera: Pollux, Blue (8mm)

Image size

1440 x 1080

Focal length

8 mm

Pixel size

3,45 x 3,45 µm

Calibration

N/A

Pollux, Green (8mm)

Image size

1440 x 1080

Focal length

8 mm

Pixel size

3,45 x 3,45 µm

Calibration

N/A

Pollux, Red (8mm)

Image size

1440 x 1080

Focal length

8 mm

Pixel size

3,45 x 3,45 µm

Calibration

N/A

Pollux, RedEdge (8mm)

Image size

1440 x 1080

Focal length

8 mm

Pixel size

3,45 x 3,45 µm

Calibration

N/A

Pollux, NIR (8mm)

Image size

1440 x 1080

Focal length

8 mm

Pixel size

3,45 x 3,45 µm

Calibration

N/A

Camera calibration

Change point error for Pollux, Blue (8mm)

Fig. 2. Change point error for Pollux, Blue (8mm).

Pollux, Blue (8mm):837 images

Type

Frame-by-frame

Image size

1440 x 1080

Focal length

8 mm

Pixel size

3.45 x 3.45 µm

	Value	Error	F	Cx	Cy	K1	K2	K3	P1	P2
F	2338.44	0,29	1,00	-0,43	0,10	-0,34	0,06	-0,03	0,70	-0,16
Cx	16.395	0,11		1,00	-0,06	0,11	0,01	-0,02	-0,87	0,08
Cy	-26.6148	0,07			1,00	-0,00	-0,02	0,03	0,08	-0,82
K1	-0.52427	0,00047				1,00	-0,94	0,88	-0,18	0,00
K2	0.0192206	0,0062					1,00	-0,98	-0,02	0,05
K3	0.666826	0,025						1,00	0,04	-0,06
P1	0.00159319	1,5e-05							1,00	0,12
P2	-0.000619814	1e-05								1,00

Table 2. Calibration coefficients and correlation matrix.

Download full test report