SOLVED Taking images with IMX462 in Python

Seka

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

veye_xumm

@seka
Hi，
I think you need to run

./rpi3-gpiovirtbuf s 133 1

to power up VEYE-MIPI-IMX462 first. Because on imx462 module, the reset pin is effective.

I will upgrade our python demo later.

Seka

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

veye_xumm

@seka
sorry for reply late.
I think this camera do not support [raw format].
Since it only support YUV422(UYVY/YUYV), the python demo only support capture file format :
IMAGE_ENCODING_JPEG, IMAGE_ENCODING_I420,IMAGE_ENCODING_BMP,IMAGE_ENCODING_PNG

Seka

@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

veye_xumm

@seka
hi,
This camera module can not output raw data.
It has an ISP module built-in, the output format is YUV.

Seka

@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?

Seka

@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

Seka

@seka ```

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

probably like this??

veye_xumm

@seka
hi, VEYE-MIPI-IMX462 do not support YUV 10BIT/12BIT.