Photoshop blurring peaks (it's hard to describe in text)

Question

I want to know how to blur something in peaks, here's a picture to help describe it:

Segment C is blurred the most then B then A to create an effect like the one on the right but with blur.

I was wondering if there was a way to do this but on a finer scale with more segments that did not involve me selecting 1 pixel tall rows then applying motion blur..

Answer 1

If I understood you correctly, you could do this:

1. Select all the layers you want to blur and then go Cmd+G and Cmd+E ( Cmd+G isn't necessarily needed )

2. Take the Brush tool and Soft round brush ( round brush with 0 hardness ) and make the brush really big ( big enough to cover the whole area you want to blur )

3. Then run it across the area you want to blur while holding Shift button ( If needed, do it multiple times. )

If you really want the peak to be tight, you can use few different brush sizes.

OR

1. Select all the layers you want to blur and then go Cmd+G and Cmd+E ( Cmd+G isn't necessarily needed )

2. Make a new gradient. Gradient that has 3 opacity stops going from 0% to 100% and back to 0% Color doesn't matter ( I used red so that it's very visible )

3. Make a new layer where you place the gradient. Hide the layer.

4. Click the gradient layers thumbnail while pressing Cmd to make a selection from it.

5. Then use Gaussian blur filter on it.

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Cmd = Ctrl in windows.

Answer 2

Feather your selections before applying the blur filter.