Generate the heat map to multiple Images

I am a fairly new user for Photoshop and can bit larger than I can chew with a project I am doing.

I have several images of a human body. People have made marks on the image based on certain criteria. I need to combine images into a single image and generate a heat map showing the percentage of people who have made marks in a given area. My plan is that this, this was to import the part marked each picture in a layer and normalize the color is the same in all layers. I then put the opacity of each layer at 1%, with the outline of the body on the bottom layer. Finally, I have an image which shows strongly marked areas denser than the lightest points scored.

My problems as I see them are twofold.

(1) because the opacity is only a range of integers from 0 to 100, after that I have 100 layers, I run the risk of losing information in areas where each layer has a brand in the same place. Since I now have an opacity of 100% to this place, all the extra layers will not add to the opacity.

2) there are several combinations of images based on different criteria, and the number of layers in each image is not the same. The final heat maps must show the percentage of marked areas. So an image with layers of 80 and image with 100 layers must display the same percentages for the heat map. I mean, if 40 people over 80 mark a place, which represents 50% of the total, while 40 people on the 100 mark in the same place, if by 40%. However, based on my strategy of opacities coming to overlap, the two will show the same density (40% opacity).

I hope that someone can suggest a strategy to overcome these limitations, or other method of combining images to create the final heat map.

This is my first post so I tram don't know if that's an appropriate question or it is the appropriate forum, but no help any who can offer would be immensely appreciated.

Have you checked the smart objects and stack Mode?

Stacks images in Adobe Photoshop

Tags: Photoshop

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