1. Open an image.
2. Using Rectangular Marquee tool, make rectangular selection carefully around the main, center part of an image.
3. Press "Q" to activate Quick mask Mode
4. Filter > Brush Strokes > Spatter
(Spray Radius: 10 Smoothness: 5)
5. Press "Q" again to Edit in standard mode. This will convert quick mask into selection. Select white color for background.
6. Select > Inverse (Press Del to delete selected portion )
7. Press Ctrl + D to deselect the selection.