IMX378¶
Sony’s IMX378 is a 12MP rolling shutter color image sensor. It’s used in almost all of our products (OAK-D, OAK-D S2 OAK-D Pro, OAK-D-PoE, OAK-D S2 PoE, etc.) as the color camera.
Sensor specs¶
Parameter |
Value |
|---|---|
Optical format |
1/2.3” |
Resolution |
4056x3040 |
Pixel size |
1.55µm |
Shutter type |
Rolling |
Chroma |
Color |
Supported resolutions¶
Name |
Resolution |
Max FPS |
MIPI lanes |
Mode |
|---|---|---|---|---|
THE_12_MP |
4056x3040 |
30 FPS |
2 |
Full resolution |
THE_4_K |
3840 x 2160 |
30 FPS |
2 |
Cropping |
THE_1080_P |
1920x1080 |
60 FPS |
2 |
Cropping (to 4K) then Binning |
FFC compatibility¶
With OAK FFC boards you can easily evaluate different sensors and optics, as you can connect FFC camera boards to any OAK FFC baseboard (OAK-FFC-4P, OAK-FFC-3P) via a flexible cable. FFC camera boards are carrier boards for the CCM (additional information below), so it can easily be connected to any OAK FFC baseboard. The following FFC camera boards contain this sensor:
From left to right: OAK-FFC-IMX378, OAK-FFC-IMX378 (Arducam short FPC), OAK-FFC-IMX378-W¶
Sensor CCMs¶
Compact camera modules (CCMs) can be integrated directly into a custom product. CCMs are used in the final camera product. CCMs vary in optics and FPC connector. The following CCMs have been built using this sensor:
Sunny style long FPC:
NFOV (AF/FF) - 81° DFOV, 69° HFOV, 55° VFOV
Arducam short FPC:
NFOV AF (PY004) - 78° DFOV, 66° HFOV, 54° VFOV, EFL: 4.81, F. NO: 1.8±5%, Lens Size: 1/2.3”
NFOV FF (PY052) - 82° DFOV, 69° HFOV, 55° VFOV, EFL: 4.74, F. NO: 1.8±5%, Lens Size: 1/2.3”
WFOV FF (PY060) - 120° DFOV, 108° HFOV, 93° VFOV, EFL: 2.75, F. NO: 2.8±5%, Lens Size: 1/2.3”
On the image above (OAK FFC board) you can see all 3 different IMX378 CCMs.
Sensor driver¶
Sensor driver adds support for that sensor to the Robotics Vision Core (RVC). Here are RVC2 driver specifications for this sensor:
Min exposure times:
Manual: 5 us (microseconds)
Auto-Exposure: 106 us
Min FPS: 2
Max exposure times:
Manual: 1 / CAM_FPS (eg. 33ms @ 30FPS)
Auto-Exposure:
AntiBanding OFF: 33ms
AntiBanding 50Hz: 30ms
AntiBanding 60Hz: 25ms
Max AE exposure time depends on the Anti-Banding (AB) mode, which helps to avoid flickering when using artificial lighting. We can configure the AB using the API:
cam = pipeline.create(dai.node.ColorCamera) # Or MonoCamera
# "OFF", "MAINS_50_HZ", or "MAINS_60_HZ"
cam.initialControl.setAntiBandingMode(dai.CameraControl.AntiBandingMode.OFF)
Image quality comparison¶
Here’s an image comparison between different image sensors captured from OAK-FFC-3P. For more information, see Improving Image Quality docs.
IMX214 (13MP color sensor), IMX378 (12MP color sensor), IMX582 (48MP color sensor)
Click on the image for the unencoded full-resolution sensor comparison image. Note that these images are about 8x digitally zoomed, and you can find full-resolution uncropped frames here (300 MB). Image specifications: Grocery items are at 4m, 33LUX, sensitivity 100ISO. Images were taken at 200ms,300ms,400ms,500ms exposure and combined with an HDR script (on the host). OAK Series 3 cameras will have native HDR support on the camera itself.
