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Clarify exposure variables in docstring

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Julian Stirling 2025-06-25 17:53:43 +01:00
parent 0389ab760a
commit 761957d7fb
1 changed files with 10 additions and 4 deletions
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14
src/openflexure_microscope_server/things/camera/picamera.py
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@ -623,11 +623,17 @@ class StreamingPiCamera2(BaseCamera):
target_white_level: int = 700, target_white_level: int = 700,
percentile: float = 99.9, percentile: float = 99.9,
): ):
"""Adjust exposure to hit the target white level """Adjust exposure until a the target white level is reached
Starting from the minimum exposure, we gradually increase exposure until Starting from the minimum exposure, gradually increase exposure until
we hit the specified white level. We use a percentile rather than the the image reaches the specified white level.
maximum, in order to be robust to a small number of noisy/bright pixels.
:param target_white_level: The target 10bit white level. 10-bit data has a
theoretical maximum of 1023, but with black level correction the true maxiumum
is about 950. Default is 700 as this is approximately 70% saturated.
:param percentile: The percentile to use instead of maximum. Default 99.9. When
calculating the brightest pixel, a percentile is used rather than the
maximum in order to be robust to a small number of noisy/bright pixels.
""" """
with self.picamera(pause_stream=True) as cam: with self.picamera(pause_stream=True) as cam:
recalibrate_utils.adjust_shutter_and_gain_from_raw( recalibrate_utils.adjust_shutter_and_gain_from_raw(