Lab Four

Alpha Channel 

Do you know you  can use alpha channel  in Photoshop  make image with background appears partially or fully transparent?
I  found an image of timber logs, and I would like to make the black gaps between the timber logs invisible

I used the alpha channel in Photoshop

the red-shaded areas are the Quick Mask and will be transparent. It would be very useful in Second life. When the image is apply to a prim, the areas covered by the red shaded areas will be transparent. 

Since I don.t have money on my SL account I  can't upload the image as a texture. However i will use the image later when I build my library.

Offset filter 

Offset filters is a good way to make mass texture images. I found an image of brick texture. After using the Offset Filter I could see the seams that cut the image into 4 parts

Since the colours of the four  parts are slightly different I used light effect to reduce the difference and then I used Clone tool to get rid off the seams

Final image !!!