Affinity Photo: how to separate lines to a layer

[meyer.wil]

I am quite new to using Affinity Photo, sorry if this is something which should be obvious.

I have a photo of a drawing with hand drawn lines on paper. The paper also has ruled lines on it. I want to separate the hand drawn lines and move them to a layer.

The contrast in the image is poor, but using auto contrast lifts background noise too much. Frequency separation seems promising, but I have not yet found anything which will isolate the lines I want without a large amount of tedious work.

Thanks,

[NathanC]

Hi @meyer.wil,

If you could possibly share the Photo you're referring to we can look at ways you may be able to achieve this. Also, to clarify did you want all hand drawn lines and ruled lines on separate pixel layers?

Many thanks 🙂

[meyer.wil]

The exact content is not essential. The attached scan should be sufficient as an example.

In this instance, I want the pencil lines isolated to a layer, but if the ruled lines may illustrate a different aspect of the technique, then I would like to see with those, as well.

Thanks for your help!

[David in Яuislip]

How's this?

separatedlines.afphoto

[meyer.wil]

53 minutes ago, David in Яuislip said:

How's this?

Good. And how is it done?

 

[David in Яuislip]

Isolate drawn lines using blend ranges - cog in layers panel
Merge visible twice
Set top layer to multiply and merge down
Turn off new layer
On first layer reset blend ranges
Rectangular marquee around the drawn lines with a decent margin
Edit/Inpaint

[meyer.wil]

OK. Unknown territory for me, so I must feel my way through. Thanks for the assistance!