how to make a layer mask and save it as black and white jpeg


Question

i want to make a layer mask in photoshop. after that i want to save the layer mask as a black and white JPEG. i want to use this black and white JPEG as a mask in photoscan. how do i do that?

1
2
10/23/2015 7:01:00 PM

Accepted Answer

After you have made your layer mask, CTRL/CMD + Left Click the layer mask to create a selection of the layer mask. Fill the selection with black (See Layer 2).

Mask Selection

Then hide all layers with the graphic and then save as a jpeg (In my example hide Layer 1).

If-need-be you can reverse the selection by Select -> Inverse.

2
10/23/2015 8:29:00 PM

Here are the steps:

  1. Make your mask the way you want
  2. Select Channels tab, you will see your mask at the bottom
  3. Target the mask channel, press Ctl-A to select all, then Ctrl-C to copy to the clipboard
  4. Press Ctrl-N to create a new document which should automatically be in the size of the mask, create the new document
  5. Press Ctrl-V to paste it into the new document

Now you can save it any way you like. Here are some screen captures for clues.

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