I want to be able to create the triangular pixelation effect depicted in the following image.
I’ve been successful with the technique detailed here–and it’s nice–but It is not quite the effect I am after.
Create a traingle using the custom shape available in photoshop
Duplicate it And Transform it Vertical
Create a Square Layer on the place of duplicated layer
Ctrl Select the duplicate layer and delete the square layer
Merge the custom layer and the newly formed layer and duplicate as much u needed to form like this
Bring the picture you needed to triangulate pixels to be applied.
Ctrl and select the triangles layer
select the image layer and duplicate it with the original image layer duplicated
now bring the original image layer behind and move the triangulate image layer to the right side And You get the Triangulated Pixels
Source : Link , Question Author : Jonathan Wilson , Answer Author : Venki