Estimate camera parameters

This examples shows how to estimate the intrinsic parameters of a connected Pupil Core world camera.

Note

This example requires the dependencies for streaming.

import sys
import logging

import pupil_recording_interface as pri

Set Pupil Core generation

Set the generation of your Pupil Core device (1, 2 or 3)

pupil_gen = 2

Set folder for saving camera parameter

folder = "~/pupil_capture_settings"

Set up stream configurations

configs = [
    pri.VideoStream.Config(
        device_type="uvc",
        device_uid=f"Pupil Cam{pupil_gen} ID2",
        name="world",
        resolution=(1280, 720),
        fps=30,
        pipeline=[
            pri.CircleGridDetector.Config(),
            pri.CamParamEstimator.Config(folder=folder, streams=("world",)),
            pri.VideoDisplay.Config(),
        ],
    ),
]

Set up logger

logging.basicConfig(
    stream=sys.stdout, level=logging.INFO, format="%(message)s"
)

Run manager

With one of the video windows in focus, press ‘i’ to acquire a pattern. You need 10 in total, attempting to cover the entire FOV of the camera. Press ‘q’ to quit.

with pri.StreamManager(configs) as manager:
    while not manager.stopped:
        if manager.keypresses._getvalue():
            key = manager.keypresses.popleft()
            if key.lower() == "i":
                manager.send_notification({"acquire_pattern": True})
            elif key.lower() == "q":
                break

print("\nStopped")