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Question

how to retrieve pixel value of channel mask

Forum|Forum|2 years ago
August 9, 2023
4 replies
1579 views

hi all,
can we retrieve the pixel value of channel mask using script.

i want retrieve the pixel value of each channel mask in the channels panel and store that details in json file.
thank you

Actions and scripting

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Davide_Barranca12040269

Legend

Yep.
Look at the Imaging API, specifically the getLayerMask() method.

Davide Barranca - PS developer and authorwww.ps-scripting.com

c.pfaffenbichler

Community Expert

Found @Paul Riggott ’s post about using RAW-files on Lab-images to get a list of the Lab-values.

https://community.adobe.com/t5/photoshop-ecosystem-discussions/easy-way-to-extract-all-pixel-lab-values-please-help/m-p/3819891

c.pfaffenbichler

Community Expert

Individual Channels (if those are what you are referring to) have no color, as they are in themselves grayscale.

Collecting the values of all pixels in an image will most probably necessitate utilizing RAW-images because iterating the Color Picker Tool across an image is too slow, both @Paul Riggott and @jazz-y have posted code that employs this technique, if I remember correctly.

https://community.adobe.com/t5/photoshop-ecosystem-discussions/reading-hex-codes-on-each-layer-of-a-photoshop-document/m-p/13964817

But I wonder if the Histogram might suffice instead … what are you actually trying to do, how and to what end are you going to process the information you want to retrieve, …?

M

Mahesh12Author

Known Participant

in the above fig. i have selected the channel. so what we are seeing in the page that i need to retrieve the pixel data of that channel mask.. so that i can store that details in json. after that we have one tool in that we need to display the channel mask exactly how it looks in the photoshop. so if i get the code to retrieve the pixel data of channel mask image, so that i can display the channel mask in our tool for every channel mask

c.pfaffenbichler

Community Expert

This description seems about meaningful but I don’t understand what this is about really?

that we have one tool in that we need to display the channel mask exactly how it looks in the photoshop.

Why employ another tool and not visualize the result in Photoshop itself?

Can that tool not simply process image data like tif, png, …?

In what exact form do you need the pixel data (not »pixel value« as you originally said)? Please post a sample.

c.pfaffenbichler

Community Expert

What do you mean by »pixel value of channel mask«?

• What pixel value?

• A Channel or a Layer Mask?

M

Mahesh12Author

Known Participant

for example pixel value of color or image.
so channel mask or layer mask is a pixel image. so i need to get the pixel value of that channel mask

c.pfaffenbichler

Community Expert

• What value/s? »pixel value of color or image« seems like a meaningless string of words to me.

• Which exact Channel/s in an image do you need to evaluate?

Please provide meaningful screenshots including all pertinent Panels to clarify.

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