def GetLUTValue(self, data, window, level):
"""Apply the RGB Look-Up Table for the data and window/level value.
Parameters
----------
data : numpy array
Pixel data array from pydicom dataset
window : float
Image window value
level : float
Image window level or width
Returns
-------
numpy array
Modified numpy array with RGB LUT applied
"""
lutvalue = util.piecewise(data, [
data <= (level - 0.5 - (window - 1) / 2), data >
(level - 0.5 + (window - 1) / 2)
], [
0, 255, lambda data: ((data - (level - 0.5)) /
(window - 1) + 0.5) * (255 - 0)
])
# Convert the resultant array to an unsigned 8-bit array to create
# an 8-bit grayscale LUT since the range is only from 0 to 255
return np.array(lutvalue, dtype=np.uint8)
def GetLUTValue(self, data, window, level):
"""Apply the RGB Look-Up Table for the data and window/level value."""
lutvalue = util.piecewise(data,
[data <= (level - 0.5 - (window - 1) / 2),
data > (level - 0.5 + (window - 1) / 2)],
[0, 255, lambda data:
((data - (level - 0.5)) / (window-1) + 0.5) *
(255 - 0)])
# Convert the resultant array to an unsigned 8-bit array to create
# an 8-bit grayscale LUT since the range is only from 0 to 255
return np.array(lutvalue, dtype=np.uint8)
def GetLUTValue(self, data, window, level):
"""Apply the RGB Look-Up Table for the data and window/level value."""
lutvalue = util.piecewise(data,
[data <= (level - 0.5 - (window - 1) / 2),
data > (level - 0.5 + (window - 1) / 2)],
[0, 255, lambda data:
((data - (level - 0.5)) / (window-1) + 0.5) *
(255 - 0)])
# Convert the resultant array to an unsigned 8-bit array to create
# an 8-bit grayscale LUT since the range is only from 0 to 255
return np.array(lutvalue, dtype=np.uint8)