Raspberry Pi V2 camera (8Mpix) settings

Former Member over 9 years ago

Hi there,

I have a V2 cameramodule with the Sony image sensor (8Mpix) and the latest RPi.

Now, for academic research I want to have fully control of the Sony image sensor on this camera.

These settings consist of commands that can be sent to the image sensor via serial bus.

I'm looking for a driver or library that I can use in Python or from the terminal to send these commands to the sensor.

I need a driver/library with ALL the commands according to the image sensor spec.

Is there somebody to help me?

Thanks!

0 clem57 over 9 years ago

I believe this has what you want: http://picamera.readthedocs.io/en/release-1.11/fov.htm . When you say all, I fail to see what you want specifically.
Clem
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0 clem57 over 9 years ago

Here is a log of changes recently: 16. Change log — Picamera 1.11 documentation
Hope this helps,
Clem
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0 clem57 over 9 years ago

Take that back:
Picamera will work as is. There may currently be a restriction that limits you to 5MPix captures - there's a define in the code of "MAX_RESOLUTION = (2592, 1944)", but I can't see with a quick glance anywhere where it is actually used.
Any hard coded use of specific sensor modes will not match and give quirky results - I'll have a quick chat with others involved and see whether it is sensible to reorder the modes to give a better match to OV5647.
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0 clem57 over 9 years ago in reply to clem57

Rpi Camera Module - eLinux.org
Seems like a big rewrite is needed. Anyone up for the task?
Clem
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0 Former Member over 9 years ago in reply to clem57

Hi Clem,
thank you very much for your answer !!
First the above given weblink does not work....
For academic research I want to measure the charge of every pixel by a given light condition, gain, etc. This means that parameters like AWB, AEC,ABC, ... must be switched off. I need to control the image sensor fully. Also settings like binning where pixels are added together I want to switch off. I need the raw charge of every pixel. Therefore I need to control all the commands of the sensor.
I hope I made it clear for you what I need.

Beste regards.
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0 Former Member over 9 years ago in reply to clem57

Does this mean that there are no V2 camera drivers yet and the acquired image from the V2 is restricted by the V1 driver?

regards.
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0 rew over 9 years ago in reply to Former Member

What you want to do is to get the raw image data. The problem is that the image data from the camera goes directly into the "videocore" processor, not into the ARM CPU on the raspberry pi. Therefore you must depend on the firmware in the videocore processor to give you access or not to the features you want.

What I heard is that for research purposes they were going to make it possible for you to get access to the raw pixeldata. But if that's done or not: I don't know.

Things like AWB and auto exposure are probably already things you can turn off.

Whether the "raw frame" is already good enough for you I don't know.
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0 Former Member over 9 years ago in reply to rew

Hi Roger,
you hit it right on the spot ! I need the RAW data of the image sensor, indeed.

Who are "they", those who change the firmware? Where can I reach them?

Thank you very much !
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