Tool/material computer
To modify (a picture or photograph) with a computer.
Open the photo with photoshop software that needs to adjust the background color. Double-click the layer and click OK in the pop-up dialog box, or press and hold the Alt key on the keyboard to double-click the layer to unlock the layer that is locked by default, which is convenient for us to edit.
Copy a layer, select a copy of the picture, and click "Quick Selection Tool" in the toolbar.
Press the "Delete" key on the keyboard and hide the background layer at the same time, as shown in the figure, the white background of the ID photo has been deleted.
Create a new blank layer under the copy, select the layer, and then click the Fill command in the edit drop-down menu.
Select "Color" in the fill dialog box, enter the background blue value in the pop-up color picker dialog box: r: 67g: 142b: 2 19, and click OK.
As the picture shows, the photo with the blue background is ready.
If you need a photo with a red background, just set the parameter to: r: 255g: 0b: 0.
The effect is shown in the figure.
It is especially recommended that the blue value and red value in the above article are both RGB parameter values used in national passports.