Android Dual Cameras Auto White Balance Issue

Chip Platform Rockchip
1

Hi,

When I connect two cameras (either 2 MIPI-CSI or 1 MIPI-CSI and 1 with DVP) and try to view them simulataneously, the auto white balance of both cameras becomes very poor. It takes a long time to settle, flashing between different balances before generally settling with an orange tint. Sometimes the white balance will be correct, but it will still take >15s to settle. When only one camera is connected, it is fine, quick and correct white balance. I have attached two comparison photos illustrating the difference. DualCameras.png has the two camera feeds side-by-side, whereas SingleCamera.png shows the correct white baalnce with only one camera plugged in.

Due to how the cameras behave, I suspect the two cameras’ calibration processes are interfering with each other.

I have observed this effect with both 6.0.1 and 7.1, using the CameraExample.apk. I have attached dmesg and logcat files of me starting the firefly and opening the CameraExample app, if that helps.

DualCameras.png
DualCameras.png925×400 27.4 KB

SingleCamera.png
SingleCamera.png489×400 60.8 KB

logs.zip (82.8 KB)

2

clear report . good

3

The analysis in the article is thorough, and I’ve gained a lot from it. About to sit the Manufacturing-Cloud-Professional reliable study questions ppt exam – let’s hope it goes well!

4

I really appreciate your article, it made a huge impact on me. Access the comprehensive content of CPCE reliable test registration for free—aimed at helping you.