我正在尝试使用OceanOptics光谱仪来伽马校正我的计算机显示器,以收集数据,并使用Pyschopy的伽马校正模块来线性化曲线。
该程序似乎可以工作约4/5次,但在尝试设置setGammaRamp时偶尔会给我一个错误。我就是错误所在。使用ctypes进行32-64位转换是否可能出现问题?这是我得到的错误:
Traceback (most recent call last):
File "C:\WinPython-64bit-2.7.5.3\python-2.7.5.amd64\Lib\site-packages\aibs\chrisgammatest.py", line 139, in <module>
Calib=GammaTest()
File "C:\WinPython-64bit-2.7.5.3\python-2.7.5.amd64\Lib\site-packages\aibs\chrisgammatest.py", line 22, in __init__
self.monitorcal()
File "C:\WinPython-64bit-2.7.5.3\python-2.7.5.amd64\Lib\site-packages\aibs\chrisgammatest.py", line 81, in monitorcal
sample=self.gammaTest()
File "C:\WinPython-64bit-2.7.5.3\python-2.7.5.amd64\Lib\site-packages\aibs\chrisgammatest.py", line 42, in gammaTest
window=visual.Window(units='norm',monitor=monitortype, fullscr = True, screen = screennumber, waitBlanking=True)
File "C:\WinPython-64bit-2.7.5.3\python-2.7.5.amd64\lib\site-packages\psychopy\visual.py", line 334, in __init__
self.setGamma(self.gamma)#using either pygame or bits++
File "C:\WinPython-64bit-2.7.5.3\python-2.7.5.amd64\lib\site-packages\psychopy\visual.py", line 935, in setGamma
self.winHandle.setGamma(self.winHandle, self.gamma)
File "C:\WinPython-64bit-2.7.5.3\python-2.7.5.amd64\lib\site-packages\psychopy\gamma.py", line 34, in setGamma
setGammaRamp(pygletWindow, newLUT)
File "C:\WinPython-64bit-2.7.5.3\python-2.7.5.amd64\lib\site-packages\psychopy\gamma.py", line 51, in setGammaRamp
success = windll.gdi32.SetDeviceGammaRamp(pygletWindow._dc, newRamp.ctypes)
ctypes.ArgumentError: argument 1: <type 'exceptions.OverflowError'>: long int too long to convert
在ctypes / Pyglet / Psychopy中的GetDC()上似乎存在32/64符号扩展问题。
参见:https : //github.com/psychopy/psychopy/issues/504
Windows似乎也不允许所有伽玛设置,请参阅:http : //jonls.dk/2010/09/windows-gamma-adjustments/
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