Pixelation Effect in Adobe Photoshop
The pixelation effect is the name given to the base of an image, the pixels, so large that each colored and square pixel looks different. In the triangle pagination effect, this square pixel is shown in such a way that it looks like a triangle instead of a circle. This is a good effect to create a poster background.
Open the photo in Photoshop and resize it according to the required output size. Now make two copies of the background layer. To do this, right-click on the background layer and click on the duplicate layer option. You have to do this twice. This will create two copies of this layer.
Now select the copy of the layer above you and press Ctrl + T from the keyboard. This way you will be able to transform this layer. Right-click on this layer and select skew from the menu that opens. Now set the value of H or horizontal skew to 45 degrees.
Filter Menu In Adobe Photoshop
From the Filter menu, click Pixelate and then Mosaic. In the window that opens, enter a value that makes the pixels look quite large. This value depends on the resolution of the image. However, a value of 20 to 50 is reasonable.
Now press Ctrl + T from the keyboard again and right-click and select skew. Set the value of H to -45 this time. Then increase the opacity of the layer to 50%.
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Work on this layer is finished. Select the second layer (between the original image layer and the first layer). Press Ctrl + T from the keyboard and right-click on the layer and select Skew. Set the value of H to 45 and apply a Mosaic filter on it as we did on the first layer. Skew this layer again and set the value of H to 45. This way the layer will return to its original state. At the same time, you will see that the image has taken a beautiful pixelate shape. You can get even better results by increasing or decreasing the pusal value of Mosaic.