Luminosity Scripts - Revised 04/20/2017

[csh2000]

I have created some luminosity scripts for PaintShop Pro. They were created and tested
in PSP X8, but should work with older versions without issue.

Update - These scripts store the masks in the alpha channels. Also included in the zip file is a script to facilitate creating a mask layer from any selection in the alpha channel

The creation of these scripts and the naming of the alpha channels are based on the
PhotoShop tutorials provided by Tony Kuyper. To understand how to use luminosity masks,
you should visit his website at http://goodlight.us/writing/luminositym ... sks-1.html

The luminosity scripts are a series of four scripts which create luminosity masks in
PaintShop Pro. The 'Lights' and 'Darks' scripts can be run independently if those are the
only the masks that you need. Alternatively, you can run 'Luminosity All Masks.PspScript'
to run all three scripts at one time..

These scripts should be installed in your Scripts-Restricted folder. For ease of use, I place
mine in a separate sub-folder called Scripts-Restricted\Luminosity Masks\.

Luminosity Lights.PspScript - Generate light luminosity masks
Lights, Lighter Lights, Bright Lights, Super Lights and Ultra Lights

Luminosity Darks.PspScript - Generate dark luminosity masks
Darks, Darker Darks, Shadow Darks, Super Darks, Ultra Darks

Luminosity Mid-tones.PspScript - Generate mid-tones luminosity masks based on 'Lights' and 'Darks'
Basic Mid-tones, Expanded Mid-tones, Wide Mid-tones, Super Mid-tones

Luminosity All Masks.PspScript - Runs all three scripts
(Luminosity Lights, Luminosity Darks and Luminosity Mid-Tones)

I have tested these on two different systems and have not experienced any issues. If you have issues with
these scripts or suggestions for improvements, please leave me a comment and I'll do my best to respond.

[Kathy_9]

It's very kind of you to share your work.

[csh2000]

I have updated the scripts with additional error checking as well as added two new scripts ('Dodge and Burn Layer' and 'Mask Layer from Alpha'). Instructions for each script are in comment section.

[csh2000]

I have updated the luminosity scripts. I was able double the speed of the three main scripts (Darks, Lights and Midtones) by turning the marquee off. The downside to this is that if you normally turn marquee off, then these scripts will turn the marquee back on when done as I can not find anyway to save previous setting.

Also, I changed the scripts to run in silent mode.

I modified scripts, please see latest update below.

[Briansdad]

This is fantastic! Just what I was looking for! I've been stymied by Luminosity Masks up to now. Thank you!

[Briansdad]

Oh, no! I expected the masks to appear as layers after running the scripts (Paintshop Pro X9, SP1). I watched as the script created them and as they disappeared when the next was created. In the end, I had no masks, just the original image. What have I done wrong?

Bill

[csh2000]

Oh, no! I expected the masks to appear as layers after running the scripts (Paintshop Pro X9, SP1). I watched as the script created them and as they disappeared when the next was created. In the end, I had no masks, just the original image. What have I done wrong?

Bill

Bill - The scripts save the data in the Alpha channel. It's easy to create a mask or selection from the Alpha channel. In the zip file, there is also a script "Mask Layer from Alpha" which helps facilitate this task. Let me know if you have other questions. I do not have PSPX9, but they should work fine there. as well.
Chip

[Briansdad]

Oh, found them in the alpha channel (running the alpha channel script). Have I got the gist of it now?

Bill

PS: This should be part of the Paintshop Pro packaged program!

[kenh]

Thanks for sharing the scripts, I have been thinking about trying to do this for a while.

[cosmicDread]

Thanks for sharing. I put an interface on the masks code and added an HSL driver:

http://forum.corel.com/EN/viewtopic.php?f=104&t=61441

Charles B.

[csh2000]

I've updated the luminosity scripts to fix a minor error and removed the requirement that these scripts be run on a raster layer. I've also added a few more scripts that I use for my photography. Install these in your "Restricted" folder.

Luminosity Lights.PspScript
- Generate light luminosity masks in Alpha Channel

Luminosity Darks.PspScript
- Generate dark luminosity masks in Alpha Channel

Luminosity Mid-tones.PspScript
- Generate mid-tones luminosity masks in Alpha Channel

Luminosity All Masks.PspScript
- Runs all three scripts (Luminosity Lights, Luminosity Darks and Luminosity Mid-Tones)

Load Mask From Alpha Channel.PspScript
- Runs 'Layers'| 'Load Mask From Alpha Channel' then renames mask layer to Alpha Channel selected.

Copy All Alpha Channels to Group.PspScript
- Create grey scale representation of all masks in the Alpha channel. This helps with visualization (opposed to small preview window). Use caution when creating as this could take a significant amount of time to create.

Copy Alpha Channel to Layer.PspScript
- Create grey scale representation of a single mask in the Alpha channel. This helps with visualization (opposed to small preview window). Also can be used to modify
image by layer blend modes. Try using 'Lighten' with Dark or mid-tone luminosity mask to lighten a dark image.

Select Brights From Image.PspScript
- Create Selection based on brightness of image. This is same luminosity selection as "Create Mask from Image".

Select Darks From Image.PspScript
- Create Selection based on darkness of image. This is same luminosity selection as "Create Mask from Image" (inverted).

File removed - See next post for revised scripts.

[csh2000]

I've tweaked the Luminosity Darks and Luminosity Lights scripts to gain additional performance over previous version. I found that I could use the existing data already in the Alpha Channels to build the new masks rather than duplicating and merging masks. This doubled the speed of each of the individual scripts (Lights and Darks). When running all three scripts there is only a 40% overall improvement as I have not found a way to speed up the mid-tone script.

I am attaching all the scripts below:

[csh2000]

I have updated the luminosity scripts to note that these scripts are now freely redistributed for non-commercial purposes only. I do ask that if you modify or reuse this code that you would please attribute original works to me. After nearly 18 years, I no longer use PSP and will not be creating nor updating any of my past scripts. I have enjoyed this community and have learned much from the community (especially Levi and Cassel).