Posts made by Seka

@seka Seems to be fixed right now

@veye_xumm No, but I am currently assessing wether it is a light source problem or camera problem. Will get back soon..

@seka ok, I understand now what the problem is: os.system does not reliably execute shell commands. When executing directly in the terminal ---> problem is gone. Thank you

@seka another problem that now occurs (and which has occured seldomly before): images are corrupted:

@seka with regarding to your suggestion " do not enable low_light mode": When I disable it, images are very dark.... and I already have longest shutter settings....

@seka Sorry, realised I had this error before: Problem: not current veye_mipi_i2c.sh ... solved now

@veye_xumm I just checked and another problem I have: I get no return value from the whitebalance mode and I cannot read its state also....

@seka regarding example code: I still run the i2c commands and just raspistill, and that is all i guess... how much sleep between i2c commands do you recommend between commands and before taking image?

@veye_xumm Hello Xu,

I expect exact same images, but I get different ones. Images stay same within same boot cycle but change after booting. I will send you images later.

Can you please provide example code for raspistill where image settings are not automatic, all manual, everything controlled --> no changes between images?

@what I forgot to say: Sometimes, the images are also the same between the boot cycles. For example the last test: 1. boot image is "normal", all are the same,
2. boot cylcle: images are brighter than in 1. cycle but all the same within the 2. boot cycle,
3. boot cycle: all are same as first boot cycle and all are same

Hi,

I use the IMX327 camera with python and RPI to in controlled lighting settings where LEDs are used to for different colored lighting.

I am trying to find the reason, why the brightness between different images stays constant, within the same boot cycle (once I have switched on, the images are same) but not, when I switch the RPI on and off again and on again.

This is the code I use:

from time import sleep
    
    import time

    import datetime

    import RPi.GPIO as GPIO
    ### Camera Init
    import D_mipicamera as Dcam
    camera = Dcam.mipi_camera()
    camera.init_camera()
    
    
    
    
    
    
    
    status = os.system('sh ./veye_mipi_i2c.sh -w -f cameramode -p1 0x0 -b 10')
    #print status 

    status = os.system('sh ./veye_mipi_i2c.sh -w -f daynightmode -p1 0xFF -p1 0x00 -b 10')
    #print status 


    ##turn off automatic exposure
    status = os.system('sh ./veye_mipi_i2c.sh -w -f agc -p1 0 -b 10')
    #print status 
    status = os.system('sh ./veye_mipi_i2c.sh -w -f wbmode -p1 0x1b -b 10')
   # print status 
    status = os.system('sh ./veye_mipi_i2c.sh -w -f mwbgain -p1 0x74 -p2 0x74 -b 10')



    status = os.system('sh ./veye_mipi_i2c.sh -w -f lowlight -p1 0x01  -b 10')
    #print status 
    
    status = os.system('sh ./veye_mipi_i2c.sh -w -f mshutter -p1 0x41  -b 10')
    #print status
    time.sleep(0.25)
    date = datetime.datetime.now().strftime("%m_%d_%Y_%H_%M_%S")
    frame = camera.capture(encoding = 'jpeg')
    camera.release_buffer(frame)
    del frame
    time.sleep(0.25)
    frame = camera.capture(encoding = 'jpeg')

    frame.as_array.tofile(dest+"control"+ date + ".jpg") 
    camera.release_buffer(frame)

Hi,
I wonder if it is possible to subset the images of IMX327 directly before saving it...

I tried:

frame = camera.capture(encoding='jpeg')
frame = frame.as_array
frame = frame[360:720, 640:1280]
    

frame.as_array.tofile(dest+"/nm590" + date + ".jpg")

But I got the error: IndexErroe: too many indices for array

When checking number of dimensions with

len(frame.shape)

it returns 1

Any idea what the problem may be?

@seka ```

frame = camera.capture(encoding = 'i420')
       frame.as_array.tofile("test.yuv")

probably like this??

@veye_xumm but yuv is 10 or 12 bit?? that would be ok for me too...

Can you please adjust my code so that I capture in 10- or 12 bit YUV?

Thank you

@veye_xumm Is there a way to capture with 10 or 12 bit depth as the sensor is capable of?

This is part of the manual that I received from you.

It seems like this is raw format, no?

@veye_xumm so is here a way to create raw images at all? with bash script?

Can you please write a line of code in python or bash with which I can capture images in raw format?

Many thanks

Thank you Xu,
ok, I can now initiate the camera but get another pointer access error when running:

 frame = camera.capture(encoding = 'raw')
    frame.as_array.tofile((directory)+"nm280"+ date + ".raw")
    camera.release_buffer(frame)

The error I get is:

In [48]: frame.as_array.tofile((directory)+"nm280"+ date + ".raw")
Traceback (most recent call last):

  File "<ipython-input-48-46dc4d541567>", line 1, in <module>
    frame.as_array.tofile((directory)+"nm280"+ date + ".raw")

  File "D_mipicamera.py", line 208, in as_array
    return np.ctypeslib.as_array(self.buffer_ptr[0].data, shape=(self.length,))

ValueError: NULL pointer access

Can you please send me a line of code with which I can create a raw image ?

Many thanks

Hi,

can I use the same scripts for python with IMX462 camera as I use for IMX327?

I somehow cannot initialize the camera:

import D_mipicamera as Dcam


camera = Dcam.mipi_camera()


camera.init_camera()

import os
status = os.system('sh ./veye_mipi_i2c.sh -w -f cameramode -p1 0x0 -b 10')
print status 

status = os.system('sh ./veye_mipi_i2c.sh -w -f daynightmode -p1 0xFC -p1 0x00 -b 10')
#print status 


##turn off automatic exposure
status = os.system('sh ./veye_mipi_i2c.sh -w -f agc -p1 0 -b 10')
print status 
##turn off white balance
status = os.system('sh ./veye_mipi_i2c.sh -w -f wbmode -p1 0x1b -b 10')
print status 



status = os.system('sh ./veye_mipi_i2c.sh -w -f lowlight -p1 0x09  -b 10')
print status 

directory="/home/pi/testmipi/"

date = datetime.datetime.now().strftime("%m_%d_%Y_%H_%M_%S")
frame = camera.capture(encoding = 'jpeg')

camera.release_buffer(frame)
del frame
time.sleep(1)

frame = camera.capture(encoding = 'jpeg')
frame.as_array.tofile((directory)+"nm590"+ date + ".jpg")
camera.release_buffer(frame)
del frame

@seka Sorry. Found out again myself:

sudo chmod +rwx rpi3-gpiovirtbuf

... did the trick

Maybe and hopefully someone else will benefits from my stupid questions, though I doubt it haha...

Hi,
I am using a Pi4B which I have configured prior to the Veye_Mipi_327 camera. Now I want to test the new IMX462 module. During installation I get the following error:

pi@M1000:~/imx462/bayercam_for_print3d/i2c_tools $ ./camera_i2c_config -b 10
setting GPIO for board revsion: c03112 kernel ver:5
Raspberry Pi3B / Pi3B+ / 3A / 4B(1G/2G/4G/8G)
./camera_i2c_config: 120: ./camera_i2c_config: ./rpi3-gpiovirtbuf: Permission denied
Use i2c-10 for the sensor (-y 10)

Any ideas what can cause this?