MVC .NetCore Uploading images using IMAGESHARP and displaying in an array

hi Guys
I have an upload script that uploads and saves images to a folder.

PROBLEM:
I want to add different colour schemes to the images and display to the user in an array or images.

here is my script

using (Image<Rgba32> image = SixLabors.ImageSharp.Image.Load(Path.Combine(path, pic.FileName)))
{

image.Mutate(ctx => ctx
.Resize(image.Width / 2, image.Height / 2)
.Polaroid()); //Add colour format

image.Save(fileName);// .Save to disk
}

.Polaroid() above is a colour format, others abound e.g. .GrayScale() , .Glow() , .OilPaint etc (I want to give up to 10 options to the user)

My question is thus

1. How do I loop through each one, one by one then assign them to a variable ?

2. Or would it be better to save them to disk and then retrieve and display back to the user ? (Bearing in mind option 2 could be resource intensive)

thank you