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IDSカメラをPythonで制御するためのパラメータ

Last updated at Posted at 2022-06-24

諸事情でIDS ueyeカメラ(UI3250)をPythonから制御したい。
ライブ画像を表示するスクリプトは公式からダウンロードできる(ログイン必要)。
露光時間・フレームレートを調整しようとして詰まったが、下記を書き加えるとどうやら制御できた。

Python
from pyueye import ueye
import ctypes

pixel_clock = ueye.uint(30) #10-128
nRet = ueye.is_PixelClock(hCam, ueye.IS_PIXELCLOCK_CMD_SET, pixel_clock, ueye.sizeof(pixel_clock))

time_exposure = ueye.double(20) #ms
nRet = ueye.is_Exposure(hCam, ueye.IS_EXPOSURE_CMD_SET_EXPOSURE, time_exposure, ueye.sizeof(time_exposure))

targetFPS = float(10) #fps
actualFPS = ueye.double()
nRet = ueye.is_SetFrameRate(hCam, targetFPS, actualFPS)

#露光時間・フレームレートを表示
print("Exposure time:\t", time_exposure)
print("Frame rate:\t", actualFPS)

参考

追記

なぜかimport ctypesを消すと制御できない?
単純にOpenCVでaviを保存すると意図したフレームレートよりもっと多くのフレームが取得されている。要検討。

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