Difference between revisions of "Elphel Eyesis4Pi"

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(Created page with "== About == '''''Elphel Eyesis4Pi''''' is an open hardware / free software panoramic camera solution that is able to capture high-resolution - 64 MPix total (120 MPix before st...")
 
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== About  ==
 
== About  ==
  
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'''''Elphel Eyesis4Pi''''' is an open hardware / free software panoramic camera solution that is able to capture high-resolution - 64 MPix total (120 MPix before stitching) - 360° panoramas at a rate up to 5 frames per second at full resolution. It is the successor of the [[Elphel Eyesis]]. Images are recorded to 8 solid-state-discs (Eyesis4Pi Data Storage) which can store up to 11 hours of footage at full resolution. Meta-data like GPS-coordinates (geotags), viewing direction, movement speed, etc. are directly embedded into the images EXIF fields. Eyesis4Pi uses 24 sensor-front-ends and high-grade lenses that are triggered simultaneously with microsecond accuracy to ensure a full homogeneous spherical snapshot.
+
'''''Elphel Eyesis4Pi''''' is an open hardware / free software panoramic camera solution that is able to capture high-resolution - 64 MPix total (120 MPix before stitching) - 360° panoramas at a rate up to 5 frames per second at full resolution. It is the successor of the [[Elphel Eyesis]]. Images are recorded to 8 solid-state-discs (Eyesis4Pi Data Storage) which can store up to 11 hours of footage at full resolution. Meta-data like GPS-coordinates (geotags), viewing direction, movement speed, etc. are directly embedded into the images EXIF fields. Eyesis4Pi uses 24 sensor-front-ends and high-grade lenses that are triggered simultaneously with microsecond accuracy to ensure a full homogeneous spherical snapshot.  
  
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===Usage Scenarios===
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=== Usage Scenarios ===
−
The system was designed to be small and lightweight with a minimal distance between the entrance pupils (46.5mm) to achieve lowest possible [http://en.wikipedia.org/wiki/Parallax parallax].
 
  
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The primary usage scenario is to mount Eyesis4Pi on the roof of a vehicle. When driving at 50 mph (22.3 m/s) and recording at 5 FPS a full panorama is captured every 4.46 meters.
+
The system was designed to be small and lightweight with a minimal distance between the entrance pupils (46.5mm) to achieve lowest possible [http://en.wikipedia.org/wiki/Parallax parallax].  
  
−
===Operation & Monitoring===
+
The primary usage scenario is to mount Eyesis4Pi on the roof of a vehicle. When driving at 50 mph (22.3 m/s) and recording at 5 FPS a full panorama is captured every 4.46 meters.  
−
Eyesis is controlled from a laptop, via a [[Eyesis_gui|web-based interface (Eyesis GUI)]]. Which also displays real-time previews of your captured panorama footage.
 
  
−
Eyesis is supplied with 110V/220V AC and can be used with car power adapter (inverter), when mounted on a car roof. Power consumption is around ???W.
+
=== Operation & Monitoring  ===
 +
 
 +
Eyesis is controlled from a laptop, via a [[Eyesis gui|web-based interface (Eyesis GUI)]]. Which also displays real-time previews of your captured panorama footage.
 +
 
 +
Eyesis is supplied with 110V/220V AC and can be used with car power adapter (inverter), when mounted on a car roof. Power consumption is around ???W.  
 +
 
 +
=== Models<br> ===
 +
 
 +
4π (or 4Pi) corresponds to a full full spherical (360°x180°) field of view in steradians.<br>
 +
 
 +
There are 2 version of the camera Eyesis4Pi with 24 image sensors and full sperical field of view and Eyesis3Pi with 16 sensors (without 8 bottom modules) with slightly smaller field of view.<br>
 +
 
 +
=== Comparison between Eyesis and Eyesis4Pi  ===
 +
 
 +
{| width="800" cellspacing="1" cellpadding="1" border="1"
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|-
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! scope="col" | Parameter<br>
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! scope="col" | Eyesis<br>
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! scope="col" |
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Eyesis4Pi <br>
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(Eyesis 3Pi without 8 bottom modules)
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! scope="col" | Notes<br>
 +
|-
 +
| Combined field of view (steradians)<br>
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| 3*π<br>
 +
| 4*π (3*π)
 +
| <br>
 +
|-
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| Number of image sensors<br>
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| 9<br>
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| 24 (16)<br>
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| <br>
 +
|-
 +
| Angular resolution +/-30° from the horizon<br>
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| ≥4.2Mpix/steradian<br>
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| ≥4.2Mpix/steradian<br>
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| 1<br>
 +
|-
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| Angular resolution +30° to +90°(zenith)<br>
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| <br>
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<br><br><br>&nbsp; <br>&nbsp;≥0.83Mpix/steradian ≥4.2Mpix/steradian 1<br>Angular resolution -30° to -90°(nadir) none ≥4.2Mpix/steradian (none) 1<br>Combined megapixels 45.0 120.0 (80.0) <br>Combined megapixels (w/o overlapping areas) 34.0 64.0 (48.0) <br>Combined megapixels (w/o overlapping areas,<br>worst case resolution) 29.0 52.8 (39.6) 1,2<br>Distance between entrance pupils<br>of adjacent horizontal lenses 34.5mm 46.5mm <br>Distance between entrance pupils<br>of horizontal and top/bottom lenses 75mm 50mm 3<br>Maximal frame rate 5fps 5fps 4<br>Maximal recording data rate 48MB/s 128MB/s (96Mb/s) <br>Maximal direct network data rate 30MB/s 80MB/s (60MB/s) <br>GPS receiver external, USB External/internal, USB/RS232 <br>GPS pulse-per-second input no yes <br>IMU none ADIS163xx,ADIS164xx <br>Data unload removable SSD in cradles eSATAx2 <br>Storage devices type 2.5″ SSD 1.8″SSD <br>Number of storage devices 3 8 (6) <br>Number of 10353 (system) boards 3 8 (6) <br>Number of 10359 (multiplexer) boards 3 8 (6) <br>Number of 10369 (interface) boards 3 8 (6)
 +
 
 +
<br>Notes:
 +
 
 +
#Angular resolution per pixel differs in the sub-camera FOV, minimal resolution is used.<br>
 +
#Zenith area for Eyesis (covered by fisheye lens) is calculated separately.<br>
 +
#For Eyesis the distance is measured from the entrance pupil of the horizontal lens to that of the top fisheye, for Eysis-4pi – to the entrance pupil of the lens immediately above/below the first one.<br>
 +
#Frame rate may be limited by the recording (or network if the SSD are not used) datarate for high compression quality (&gt;0.3 bytes/pixel), required for the aberration correction.<br><br>
 +
 
 +
<br>

Revision as of 04:55, 10 August 2011

About

Elphel Eyesis4Pi is an open hardware / free software panoramic camera solution that is able to capture high-resolution - 64 MPix total (120 MPix before stitching) - 360° panoramas at a rate up to 5 frames per second at full resolution. It is the successor of the Elphel Eyesis. Images are recorded to 8 solid-state-discs (Eyesis4Pi Data Storage) which can store up to 11 hours of footage at full resolution. Meta-data like GPS-coordinates (geotags), viewing direction, movement speed, etc. are directly embedded into the images EXIF fields. Eyesis4Pi uses 24 sensor-front-ends and high-grade lenses that are triggered simultaneously with microsecond accuracy to ensure a full homogeneous spherical snapshot.

Usage Scenarios

The system was designed to be small and lightweight with a minimal distance between the entrance pupils (46.5mm) to achieve lowest possible parallax.

The primary usage scenario is to mount Eyesis4Pi on the roof of a vehicle. When driving at 50 mph (22.3 m/s) and recording at 5 FPS a full panorama is captured every 4.46 meters.

Operation & Monitoring

Eyesis is controlled from a laptop, via a web-based interface (Eyesis GUI). Which also displays real-time previews of your captured panorama footage.

Eyesis is supplied with 110V/220V AC and can be used with car power adapter (inverter), when mounted on a car roof. Power consumption is around ???W.

Models

4π (or 4Pi) corresponds to a full full spherical (360°x180°) field of view in steradians.

There are 2 version of the camera Eyesis4Pi with 24 image sensors and full sperical field of view and Eyesis3Pi with 16 sensors (without 8 bottom modules) with slightly smaller field of view.

Comparison between Eyesis and Eyesis4Pi

Parameter
 Eyesis

Eyesis4Pi

(Eyesis 3Pi without 8 bottom modules)

Notes
Combined field of view (steradians)
 3*π
 4*π (3*π)
Number of image sensors
 9
 24 (16)
Angular resolution +/-30° from the horizon
 ≥4.2Mpix/steradian
 ≥4.2Mpix/steradian
 1
Angular resolution +30° to +90°(zenith)

































































 
 ≥0.83Mpix/steradian ≥4.2Mpix/steradian 1
Angular resolution -30° to -90°(nadir) none ≥4.2Mpix/steradian (none) 1
Combined megapixels 45.0 120.0 (80.0)
Combined megapixels (w/o overlapping areas) 34.0 64.0 (48.0)
Combined megapixels (w/o overlapping areas,
worst case resolution) 29.0 52.8 (39.6) 1,2
Distance between entrance pupils
of adjacent horizontal lenses 34.5mm 46.5mm
Distance between entrance pupils
of horizontal and top/bottom lenses 75mm 50mm 3
Maximal frame rate 5fps 5fps 4
Maximal recording data rate 48MB/s 128MB/s (96Mb/s)
Maximal direct network data rate 30MB/s 80MB/s (60MB/s)
GPS receiver external, USB External/internal, USB/RS232
GPS pulse-per-second input no yes
IMU none ADIS163xx,ADIS164xx
Data unload removable SSD in cradles eSATAx2
Storage devices type 2.5″ SSD 1.8″SSD
Number of storage devices 3 8 (6)
Number of 10353 (system) boards 3 8 (6)
Number of 10359 (multiplexer) boards 3 8 (6)
Number of 10369 (interface) boards 3 8 (6)


Notes:

  1. Angular resolution per pixel differs in the sub-camera FOV, minimal resolution is used.
  2. Zenith area for Eyesis (covered by fisheye lens) is calculated separately.
  3. For Eyesis the distance is measured from the entrance pupil of the horizontal lens to that of the top fisheye, for Eysis-4pi – to the entrance pupil of the lens immediately above/below the first one.
  4. Frame rate may be limited by the recording (or network if the SSD are not used) datarate for high compression quality (>0.3 bytes/pixel), required for the aberration correction.


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