subtract_constant
- laserbeamsize.background.subtract_constant(original, background, iso_noise=True)[source]
Return image with a constant value subtracted.
Subtract threshold from entire image. If iso_noise is False then negative values are set to zero.
The returned array is an array of float with the shape of original.
- Parameters:
original – the image to work with
background – value to subtract every pixel
- Returns:
image – 2D float array with constant background subtracted