def capture(): nivision.IMAQdxGrab(id, img, 1) picture = nivision.imaqImageToArray(img) data = struct.unpack(fmt, picture[0]) data = np.asarray(data) data = np.reshape(data, (cam_y, cam_x)) return data
def _decode_image_data(self, img):
img_array = nv.imaqImageToArray(img)
img_array_shape = (img_array[2], img_array[1])
# bitdepth in bytes
bitdepth = len(img_array[0]) // (img_array[1] * img_array[2])
dtype = {1: np.uint8, 2: np.uint16, 4: np.uint32}[bitdepth]
data = np.frombuffer(img_array[0],
dtype=dtype).reshape(img_array_shape)
return data.copy()
def _decode_image_data(self, img):
img_array = nv.imaqImageToArray(img)
img_array_shape = (img_array[2], img_array[1])
# bitdepth in bytes
bitdepth = len(img_array[0]) // (img_array[1] * img_array[2])
# print(bitdepth)
if bitdepth == 1:
dtype = np.uint8
elif bitdepth == 2:
dtype = np.uint16
elif bitdepth == 4:
dtype = np.uint32
else:
raise ValueError(dtype)
data = np.frombuffer(img_array[0], dtype=dtype).reshape(img_array_shape)
return data.copy()