Posts made by watchever

@veye_xumm yes but CS series don't have same sensor and are not as sensitive as VEYE series (especially 462 and 327).
Is it a material limit or could be solved by a development on your side : add a specific register to set framerate ? Thanks

@veye_xumm thanks, I really need to reduce pixel refesh rate on the material side, is it possible ?

Is there a way to fully deactivate the auto exposure algorithm ? I think when I manually set mshutter it it the case ?

@veye_xumm thanks, if I well understand nodf ignore some frames but not really reduce the material framerate. Am I wrong ?

Thanks

@veye_xumm I use mshutter for shutter speed and lowlight for framerate.

Hello, is it possible to set separetly framerate and shutter speed ? When I set shutter speed it seems to erase my framerate settings and the same happens when I set framerate, it seems shutter speed setting is erased.
Can you confirm and let me know if it is possible to keep the two settings ?
I want to get the best light sensitivity possible, testing on VEYE 327 and 462.
Thanks

I have both camera modules VEYE MIPI 462 and VEYE MIPI 327. My program works fine with the VEYE MIPI 462 but not with the 327. It is like the VEYE MIPI 327 is not detected, because it says 'failed to write register index...'. Your script, like veye_raspipreview, also does not work. Do I have to plug the 5V on the board of the MIPI 327 or like the MIPI 462 it is not necessary (I guess that MIPI 462 get voltage from the CSI cable) ?
Thanks for your help

@veye_xumm one more question, what is your most light sensitive sensor ?
Thanks

@veye_xumm Thanks, but I would need a high sensitive sensor like IMX462 or IMX290 and not sure you have one in CS-MIPI version ?

Can you please confirm that when I set AGC to 0x0 value, it sets auto gain control to off ?

And another question regarding AESPEED parameter, is it possible to set separatly agc speed and shutter speed (is it same as mshutter parameter) ?

And last question which parameters and values combinaison should I set to have the most sensitive light setup with fully manual adjustment ?

Thanks a lot for your valuable help

Hi, I have tried to reduce the IMX462 preview and capture definition (by default it is 1920x1080), but it always freeze linux or crash. Do you know what are the definitions supported by your censor ?
Thanks

Ok got it. I confirm output format is I420 and array order is correct. Thanks for your help

I don't mind using I420, however you told me in previous post that IMX432 only support I422 format, so I go that way. Do you confirm IMX432 support I420. I confirm that usinf i420 encoding and i422 does not change output array size. So it also means that yuvseq register is useless.

Any idea how the data are stored in this array. Standards say that I should have 1920x1088 Y elements first in the output array, then (960x544) U elements then (960x544 / 2) V elements, but does not seem to be the case.

Mistake in my code :
buffer_array = self._camera.capture(encoding = 'i422')
output = buffer_array.as_array

I have a IMX432 so as you told me in a previous post it does not support I420. Following is my code, I also force register to UYVY, when I initialize the camera.

buffer_array = self._camera.capture(encoding = 'i422')
output = buffer_array.as_rgb_array

When I make the caputre I have following message on my terminal window :
mmal: capture_buffer_callback data len is 3133440

However getting a I420 format is not a problem, but need to know to manipulate the picture. And also know the order of the elements in the array, because it does not seem to be standard (should be all the Y elements first then U and last V).

Thanks

Hi, I am a bit confused with the format of the output array receive from capture function. I set UYVY format and my picture definition is 1920x1088 (so total of 2 088 960 pixels). If output format is UYVY I should have an output array of 4 177 920 elements (4 bytes UYVY code 2 pixels), but output array from capture has a size of 3 133 440 elements (2 088 960 x 1.5). Don't really understand the format of this output array. Any idea or help (not sure my explanation is clear) ?
Thanks in advance

Hello, you told me that it was not possible to set exposure above 1 second on IMX462.
Is it a technical limitations or a modification on your site could unlock this parameter ? This would be really useful for my poc project.
Let me know
Thanks

@veye_xumm many thanks, in the VEYE wiki it is said : "value is exposure time（seconds）

If value is greater than or equal to 0x4B, it will reduce framerate"

So I guess that if you define low shutter speed value it also affect frame rate ?

Thanks

@veye_xumm said in saturation, contrast, shutter speed, iso on VEYE-MIPI-462:

YUV422(VYUY or YUYV)

Just one more question regarding this format, how can I know that it is VYUY or YUYV. It is important because I want to convert to RGB and the converting algo is not the same.
I you ever have a python piece of code to convert the buffer.as_array returned numpy array to RGB numpy array it would be a great great help for me !!

Thanks

Yes it does work, thanks, however if I change shutter speed it seems to erase the framerate setting ? Do you confirm ?