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rory

Adjusting HUE for cheap cameras

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Example with hue lowered on a DVR's color setting.

In this case its a Dahua DVR but should work the same with others.

 

Camera on left is a cheap Color only bullet, has a fixed IR cut but colors are still a little off. Lowered the HUE to 30

Camera on right is a cheap Color IR bullet, HUE lowered to 20.

 

Bottom left is closer to the real colors.

Only testing this for green from shrubs and trees.

[attachment=0]DVR-HUE-EG.png[/attachment]

 

ps. hey look, it was this or go outside and move some fallen trees...

Edited by Guest

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No not correcting it, just making it look a little better.

I dont know what it will do with other colors, may turn them greenish also, though looks ok in this case.

 

That cheap color only camera is pretty old though, a new one probably produces better color.

In fact I installed a new one the other night, just have to tie it in now.

Edited by Guest

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Ok scrap that idea ... the yellow on the wall is turning pinkish now

 

I should delete this thread and ban myself for being such an idiot

Edited by Guest

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My CCD IR cams, no IR cut, by default have good color I think. If I want a beautiful color shot, I take a picture with a good digi cam. I did however find a slight adjustment to hue can help certain cameras. I've experimented with another setting too- saturation. That one can really make things too funky overall, even at night- making the picture kinda purple. But careful adjustment between hue/saturation can be useful. I have new cameras and even without IR cut, they're really fine. COMS cameras were just not good with color overall- at least the cheap ones I had. I got acceptable clothes color which is good actually, but landscape colors were all off. But I'm not completely bent on IR cut. I like my one camera that has it, but my other seven that don't looks fine to me as well. I guess beauty is in the eye of the beholder.

 

Dan

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