How to change color of the image after capturing

[somnathbanik]

Hi,
I am trying to change the color of the image after its being captured.


Please suggest me.

[symbianyucca]

I though we already had this discussion in: http://discussion.forum.nokia.com/fo...d.php?t=193142

So what additional have you tried, and what are the outcomes ?

[somnathbanik]

I though we already had this discussion in: http://discussion.forum.nokia.com/fo...d.php?t=193142

So what additional have you tried, and what are the outcomes ?

You can see what I tried in the last thread but those didn't help me much. If you have any more suggestion please come up with those.
Can I use this class CCameraImageProcessing

[symbianyucca]

I have never used it so if you think it might help, then try out and see what the result is. anyway, you could also try out what I said in the previous thread, I did make a working 2D barcode reader myself some 3 years ago, and the key was to make a logic that determines which pixel color of the image can be determined to be black and which can not.

[tamhanna]

Hi,
I am trying to change the color of the image after its being captured.


Please suggest me.

Process the bitmap?

I guess its as easy as that. Pixel data is RGB - 8bit red, 8bit green and 8bit blue.

[symbianyucca]

Process the bitmap?

I guess its as easy as that. Pixel data is RGB - 8bit red, 8bit green and 8bit blue.

Wow you are an expert, and that's usefull information... anyway did you check the other thread ?

[tamhanna]

Hello,
yep - I did. And transforming the green part to black is easy (we did that as a school assignment looong time ago).

Just strip off the Red and blue parts like this:
r.val=g.val
b.val=g.val

And you end up with a grey image from black to white with the "green intensities" green being white and black staying black. If you now really really want to go for the green, then you invert - then green becomes black and vice versa.