When ps makes pictures, the pictures are blurred after enlargement. How to deal with it clearly?

1. Execute: File-Open, and open the picture to be processed (skilled friends can double-click on the PS interface to open the file to be processed);

2. Select the background layer and drag it to the new graphic button to copy the background;

3. Execute: Filter-Other-Gao Fancha is reserved, and the radius value depends on the screen (generally about 2 to 5);

4. Change the layer blending attribute to overlay in the layer panel;

5. Execute: Filter-Sharpen -USM Sharpen (the value depends on the picture);

6. Execute: Image-Adjustment-Brightness/Contrast (the brightness and contrast values are determined according to the picture), and then save the file to complete the production of the effect of this example.