How to smooth out dark pixelated areas in photoshop

1) On the left of the Photoshop workspace, click on a selection tool icon

2) Select the area of texture to be smoothed

3) Select the Gaussian Blur Filter

4) Adjust the amount of blur

5) Photoshop CS5 Smart Filter

hi, you. i think this we be deleted because it's a invalid question.

(i suggest no to do this in the

answeroperating system;