VIBE復現過程，使用nvidia和libOpenGL.so渲染出錯及解決方案

VIBE全稱是"Video Inference for Human Body Pose and Shape Estimation"，是2020年CVPR(computer vision and pattern recognition)中關于人體姿態骨架的一篇論文。
論文地址：https://arxiv.org/abs/1912.05656
github源碼地址：https://github.com/mkocabas/VIBE

問題描述

根據作者給出的源碼，在復現過程中出現以下問題：

return self._finalCall( *args, **named ) TypeError: 'NoneType' object is not callable During handling of the above exception, another exception occurred: TypeError: startswith first arg must be bytes or a tuple of bytes, not str

解決方案

上述問題并不是VIBE本身的代碼邏輯有問題，而是與nvidia驅動程序、OpenGL文件有關系。
這里給出了解決方案，也就是修改OpenGL/platform文件夾下的egl.py文件，將第36行的’GL’注釋掉，換成’OpenGL’。

修改之后的egl.py完整文件如下：

import ctypes, ctypes.util from OpenGL.platform import baseplatform, ctypesloaderclass EGLPlatform( baseplatform.BasePlatform ):"""EGL platform for opengl-es only platforms"""@baseplatform.lazy_propertydef GLES1(self):try:return ctypesloader.loadLibrary(ctypes.cdll,'GLESv1_CM', # ickmode=ctypes.RTLD_GLOBAL )except OSError as err:return None@baseplatform.lazy_propertydef GLES2(self):try:return ctypesloader.loadLibrary(ctypes.cdll,'GLESv2', mode=ctypes.RTLD_GLOBAL )except OSError as err:return None@baseplatform.lazy_propertydef GLES3(self):# implementers guide says to use the same name for the DLLreturn self.GLES2@baseplatform.lazy_propertydef GL(self):try:return ctypesloader.loadLibrary(ctypes.cdll,#'GL', 'OpenGL',mode=ctypes.RTLD_GLOBAL )except OSError as err:return self.GLES2 or self.GLES1@baseplatform.lazy_propertydef GLU(self):try:return ctypesloader.loadLibrary(ctypes.cdll,'GLU',mode=ctypes.RTLD_GLOBAL )except OSError as err:return None@baseplatform.lazy_propertydef GLUT( self ):try:return ctypesloader.loadLibrary(ctypes.cdll,'glut', mode=ctypes.RTLD_GLOBAL )except OSError as err:return None@baseplatform.lazy_propertydef OpenGL(self): return self.GL@baseplatform.lazy_propertydef EGL(self):try:return ctypesloader.loadLibrary(ctypes.cdll,'EGL', mode=ctypes.RTLD_GLOBAL )except OSError as err:raise ImportError("Unable to load EGL library", *err.args)@baseplatform.lazy_propertydef getExtensionProcedure( self ):eglGetProcAddress = self.EGL.eglGetProcAddresseglGetProcAddress.restype = ctypes.c_void_preturn eglGetProcAddress@baseplatform.lazy_propertydef GLE( self ):try:return ctypesloader.loadLibrary(ctypes.cdll,'gle', mode=ctypes.RTLD_GLOBAL )except OSError as err:return NoneDEFAULT_FUNCTION_TYPE = staticmethod( ctypes.CFUNCTYPE )@baseplatform.lazy_propertydef GetCurrentContext( self ):return self.EGL.eglGetCurrentContext

總結

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