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Questions tagged [autoexposurecompensation]

9 questions
13
votes
3 answers

How to get Exposure Compensation level from Android phone camera, via Java, when picture is taken?

How to get AutoExposureCompensation level (brightness) from Android phone when the picture is taken? I can take a picture. I can access the Parameters of the Camera, including the Exposure Compensation (always zero when I check), but I need to get…
Brian
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2 answers

Camera API2-Control exposure level for a fixed region in camera

while exploring android camera2 api,i came to know that we can set exposure level as we wish, but the thing is i want to control exposure level for a focused region,for example, if we tap on any part of camera screen,it will be focused and after…
camelCode
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Android CameraX - manually change exposure compensation?

I'm using CameraX for my project. I have created preview useCase and capture useCase. final CameraSelector cameraSelector = new CameraSelector.Builder().requireLensFacing(lensFacing).build(); previewBuilder = new Preview.Builder() …
Šemsudin Tafilović
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3
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1 answer

Adjust exposure of RAW image based on EV value

I'm trying to write a program that takes in a matrix full of 12-bit RAW sensor values (that range from [512-4096]) (512 is the Bayer sensor black level--> i.e. what pure black is defined as) and adjusts the EV of each pixel, excatly like the Adobe…
JoeVictor
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AVCaptureDevice.setExposureTargetBias() doesn't affect exposure as expected

The documentation isn't very clear on this, but it kind of implies that the value you send into this function would be measured in stops. But the results are not as expected, especially in bright scenes. The exposure does not increase by the same…
adamfowlerphoto
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With the Android camera2 API, is it possible to keep exposure and framerate constant, but automatically set sensitivity/gain?

I'm working with the Android NDK's camera API, and I currently have ACAMERA_CONTROL_AE_MODE turned off, so that I can set exposure time and framerate manually for motion blur related reasons. However, I'd still like to have automatic control for the…
daveboat
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How to set the ''CONTROL_AE_EXPOSURE_COMPENSATION'' in Camera2 API on Android?

I'm currently working on Androids Camera 2 API and my current problem is, that I cannot set the "CONTROL_AE_EXPOSURE_COMPENSATION". My code: -1.0 < exposureAdjustment <1.0 public void setExposure(double exposureAdjustment) { Range…
Manuel Schmitzberger
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Adjustable but consistent/raw feed from Camera X (no AE or AWB)

*Note: I figured out why the image was too dark at max SENSOR_SENSITIVITY: it was just a matter of EXPOSURE_TIME being too short, had to pump it up to 8 digits. Now all I have to do is save the values for SENSOR_SENSITIVITY and EXPOSURE_TIME. So,…
Bell botanics
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Removing flicker in fisheye cameras due to auto exposure

I am working on surround view monitoring system where the driver of the vehicle gets 360 view of the vehicle surroundings. When there is a considerable change in the amount of light entering the camera, there is a rapid change in auto-exposure…
user2315033
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