Photoshop Background Eraser Photoshop Tutorial

Adobe Photoshop’s Background Eraser tool allows the user to obliterate the background graphics of any image. On the selected layer, the pixels are reduced to transparency as you drag. Various sampling and tolerance options can be used to control the range of transparency and boundary sharpness. It is grouped in with the eraser tool.

The various options of the background eraser are: -

Tolerance
Tolerance controls the selection area of the sample color. A lesser value restricts the removal to hues very similar to the sampled color. A larger value removes a wider range of colors.

Sampling
Choose Contiguous to select colors continuously on dragging. This option is used to erase connected areas having different colors.
Opt for Once to remove only the color that was chosen first. This erases a solid area.
Background Swatch erases only those areas having the current background color.
Protect Foreground Color prevents the removal of areas that tally with the foreground color in the toolbox.

How to use
Select the layer having the portion to be erased.
Select an option of the background eraser tool.
Choose the desired Tolerance level.
Select the Sampling.
Choose a background color. This will be the new background after the Background Eraser tool has done its job.
Select the desired brush size and hardness by clicking on the Brush Options.
Take care that the crosshair is never on one of the foreground objects.
When you drag the brush in the active layer, the area under the cross hair is replaced by the new background color.