How can I pass an image as an argument to a python script from a c# application without writing/reading it from disk?

Question

Hi I have a C# program that opens a process and calls a python script to execute some operations on an image.

Currently, I'm saving the image to the disk and passing the path to my python script as an argument, but I want to speed it up and wonder if I can use memory stream instead.

var psi = new ProcessStartInfo();
psi.FileName = @"python_interpreter_path";
var script = @"my_python_script_path";
psi.Arguments = script;
psi.UseShellExecute = false;
psi.CreateNoWindow = true;
psi.RedirectStandardOutput = true;
psi.RedirectStandardError = true;
var errors = "";
var results = "";
using (var process = Process.Start(psi))
{
       errors = process.StandardError.ReadToEnd();
       results = process.StandardOutput.ReadToEnd();
       Console.WriteLine(errors);
       Console.WriteLine(results);
}

I've got a python script that can decode a data stream and open it as an image using cv2.imread(). But I clueless on what to do with my c# code.

Any help is welcome! Thanks

Learn something about either Memory Mapped File, or Named Pipe. — aepot
– aepot, Commented Jul 4, 2021 at 21:30
Does this answer your question? Sharing data across processes on linux — Lenormju
– Lenormju, Commented Jul 5, 2021 at 7:12

Felipe Cunha · Accepted Answer · 2021-07-05 13:19:46Z

0

Thanks guys for indicating a direction. Pipes seems to be a great alternative for this problem.

I've tested this solution and it works: Named Pipes between C# and Python

On the python side pywin32 will need to be installed: python -m pip install pywin32

Thanks

answered Jul 5, 2021 at 13:19

Felipe Cunha

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