Re: help on better image

[John Cupitt ng-london org uk]

simith nambiar wrote:
>            i have a Logitech Quickcam express up and
> running, the only problem i have is the color !
> the color is a bit bluish when i plot it using
> gdk_draw_raw_rgb_image using gtk .

Hi, you probably need to add a white balance function. Add a button 
somewhere ... on click, find the average pixel value in each of the 
three channels (eg. you might get R = 128, G = 128, B = 200), and use 
that to weight the pixels you send to the display. Do it with look up 
tables and you won't see much of a slowdown.

John



========================================================== 
Fabric of Vision 
Dress and Drapery in Painting 

19 June - 8 September 2002 

For information and tickets: 
http://www.nationalgallery.org.uk/exhibitions/fabric/