Convert image from pygame to PIL image

问题:

we are using a Raspberry Pi + Python 3.4 + PyGame to capture an image from a specific USB webcam. We use this simple code to capture (it works ok):

pygame.camera.init()
cam = pygame.camera.Camera(pygame.camera.list_cameras()[0],(1280,720))
cam.start()
time.sleep(1)
webcamImage = cam.get_image()

The problem comes here: we have to convert this webcamImage into a PIL image. We follow this link but unfortunately the function Image.fromstring() not exists anymore. So, we can't do that:

pil_string_image = pygame.image.tostring(webcamImage, "RGBA",False)
pil_image = Image.fromstring("RGBA",(1280,720),pil_string_image)

PIL says that Image.fromstring() is deprecated, and suggests to use the function Image.frombytes(). Clearly we not found the equivalent pygame.image function that convert the webcamImage into an array of bytes. So we are stucked here: can you help us, please? Thank you :-)

回答1:

As per Damian Yerrick's comment, under Python 3 the result of pygame.image.tostring() is a bytes, despite the method's name. Thus we can go out of this situation with this simple code:

pygame.camera.init()
cam = pygame.camera.Camera(pygame.camera.list_cameras()[0],(1280,720))
cam.start()
time.sleep(1)
webcamImage = cam.get_image()
pil_string_image = pygame.image.tostring(img,"RGBA",False)
im = Image.frombytes("RGBA",(1280,720),pil_string_image)