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Grainy Camera Problem

June 8, 2011 - 1:58pm #1

Hello Everyone,

I'm having a problem with an android camera being very grainy when it is focusing on an AR image target. The distance between the camera and the image target seems to be the problem. I dont believe the hardware is the whole cause of this issue so how can I improve the camera quality through code?

Check the video below for more info:
http://www.youtube.com/watch?v=Dlc_23FRJqs
The focus mode is turned on when image target isnt found and turned off when it is detected/tracked. The focus mode is on AUTO. Camera mode is on QUALITY.

SPS_John
Joined:
June 6, 2011
Posts: 5
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Re: Grainy Camera Problem

June 9, 2011 - 1:36pm #4

@ppreuss
I am using two devices; the Evo 4G(PC36100, version 2.2) and the Droid X (version 2.2.1). Thanks for the advice about the light. It makes the camera less grainy.

@Tyro
With the focusing issue, our team has been trying to figure out an algorithm to focus whenever the camera moves so the image target is always detected/tracked. The original image target was 1 start and that probably didn't help.

Thanks for your responses

SPS_John
Joined:
June 6, 2011
Posts: 5
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Re: Grainy Camera Problem

June 9, 2011 - 10:14am #3

Hello SPS_John,

Some cameras will appear grainy in low light situations. Was the room well lit? Also, what type of device are you using? Can you post your model number and OS version? Model can be found in:

Settings -> About Phone -> Phone Identity

Thanks,

-Peter

ppreuss
Joined:
October 4, 2010
Posts: 359
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Re: Grainy Camera Problem

June 9, 2011 - 6:23am #2

You may be promoting that behavior by turning off autofocus on detection, causing that focus cycle as the target alternates detection states. What happens if you retain autofocus when the target is detected?

Also what's the rating on that target?

Tyro
Joined:
April 6, 2011
Posts: 124
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