The terms "shutter" and "shutter speed" are used through libcamera to mean "exposure time". This is confusing, both due to "speed" being used as "time" while it should be the inverse (i.e. a maximum speed should correspond to the minimum time), and due to "shutter speed" and "exposure time" being used in different places with the same meaning. To improve clarity of the code base and the documentation, use "exposure time" consistently to replace "shutter speed". This rename highlighted another vocabulary issue in libcamera. The ExposureModeHelper::splitExposure() function used to document that it splits "exposure time into shutter time and gain". It has been reworded to "split exposure into exposure time and gain". That is not entirely satisfactory, as "exposure" has a defined meaning in photography (see https://en.wikipedia.org/wiki/Exposure_(photography)) that is not expressed as a duration. This issue if left to be addressed separately. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Naushir Patuck <naush@raspberrypi.com> Acked-by: Kieran Bingham <kieran.bingham@ideasonboard.com> |
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libtuning | ||
raspberrypi | ||
config-example.yaml | ||
raspberrypi_alsc_only.py | ||
README.rst | ||
requirements.txt | ||
rkisp1.py |
.. SPDX-License-Identifier: CC-BY-SA-4.0 libcamera tuning tools ====================== .. Note:: The tuning tools are still very much work in progress. If in doubt, please ask on the mailing list. .. todo:: Write documentation Installation of dependencies ---------------------------- :: # Using a venv python3 -m venv venv . ./venv/bin/activate pip3 install -r requirements.txt