Decoding received message from capture_image command

[Nicolaas94]

Hi,

I found your bk5000.py setup and it works very well in collecting a real-time stream from the BK5000.
However, I am new to bytes and TCP links and I try to figure out how to decode the received message after the command CAPTURE_IMAGE.
I figured out that the response message is much shorter than the bytearray length, assuming that the single image is sent in multiple parts through the buffer. The get_frame and decode_image functions from the bk5000.py do not solve the problem.

I expected an array of win_size[0]*win_size[1] which is around 360.000 bytes. However, in the bytearray I receive around 132.000 bytes.
When sending the command through the BK OEM test tool I received a 132kb .bin file which is the entire image when opened with ImageJ. This means that the bytearray containing the 132.000 bytes should be the entire image. But I cannot decode the bytes and reshape them into the win_sizes.

Could you please help me?

Nicolaas

[tdowrick]

Hi there,

I haven't tried to implement this particular command before, so am not sure what the decoding steps need to be. I also don't have access to a BK at the moment, so aren't able to look into a solution at present unfortunately.

What is the workflow you are trying to implement? Would you be able to just use the 'normal' streaming configuration to capture an image in Python?

[Nicolaas94]

Hi,
I try to implement a stepwise acquisition method. The images needs to be acquired when a step is performed and that I am sure that the transducer is standing still at the certain position.
Currently I figured out how to use the 'normal' streaming to get an single image. However, it seems that streaming with FPS=25 ends up in missing images between steps. I use a CIRS phantom to validate the acquisitions.
When streaming with FPS=1 or 2 then the problem does not occur. I want to figure out how this is possible. The buffer is cleared at every step.

Do you know what could be the underlying cause of missing images in a stepwise acquisition method?

Thank you very much!

[tdowrick]

Are you able to post the Python code that you are using for acquisition? I might be able to spot any issue that are affecting the streaming.