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Questions tagged [exposure-time]

7 questions
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1 answer

Can camera2 API tell me the difference between the current exposure and the ideal one?

We're building a camera app, and we want to use manual exposure. We don't want the exposure algorithm to set the ISO and exposure duration; instead we want it to tell us what the difference is between the manual exposure that we set and the correct…
Kartick Vaddadi
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CameraCharacteristics SENSOR_INFO_EXPOSURE_TIME_RANGE gives wrong values

I am using SENSOR_INFO_EXPOSURE_TIME_RANGE to calculate the range of supported exposure time. I tested this in Huawei P30 Pro and it seems like this API is giving wrong values(10000 - 1000000000). But when I use the built in camera app's pro mode,…
Shivam Pokhriyal
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2
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Process video with frame averaging to produce long exposure final frame

I'm looking for a FFMPEG script able to process a video file, create frame averaging and save latest long exposed frame. My goal is to process the video enhancing the trasparent TV logo on the screen: Is this viable via FFMPEG? thx
user3925023
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How to set the shutter time but leave the ISO (sensitivity) on auto on android

I am building an Android app with the Camera2 API that uses short shutter times, 1/1000 and 1/2000. I can set the SENSOR_EXPOSURE_TIME without any problem. But I want to keep the ISO (SENSOR_SENSITIVITY) on auto mode. To set the shutter speed I use…
Marcel Römer
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How to set exposure time in Python using mvImpact library

I connected to Matrix Vision BVS0036 industrial camera with Python using mvImpact library. I can use the camera now, but I don't know how to change the exposure time or other settings of the camera. Or rather, I couldn't. The code you see is the…
mehmet_kacmaz_03
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Real time taking pictures with different exposure times and automatically with OpenCV

I'm trying to make a python program with OpenCV, which opens the webcam and takes several images with different exposures in real time (40ms,95ms,150ms) and averages them in the end. I tried to create a loop in which I change the exposure time,…
Omar Benjelloun
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Long exposure camera - Software method

What is the most efficient method to achieve long exposure time? Basically, API of Android camera2 allow to manual change exposure time, ISO and other camera parameters, but limited by device limit. Eg. Huawei P20 Lite has 1s limit, but, built-in…
Robert Radziszewski
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