This is an example of how you can use CoreImage Filters in your SwiftUI Apps

CoreImageExample.swift

import SwiftUI
import CoreImage
import CoreImage.CIFilterBuiltins

struct CoreImageExample: View {
    @State private var image: Image?
    
    // We can have a filter picker in order to make this property dynamic
    @State private var currentFilter: CIFilter = CIFilter.sepiaTone()
    
    @State private var filterIntensity = 0.5
    
    let context = CIContext()
    
    var body: some View {
        VStack {
            image?
                .resizable()
                .scaledToFit()
            
            HStack {
                Text("Intensity")
                Slider(value: $filterIntensity)
                    .onChange(of: filterIntensity) { _ in
                        applyProcessing()
                    }
            }
            .padding(.vertical)
        }
        .padding()
        .onAppear(perform: loadImage)
    }
    
    func loadImage() {
        guard let inputImage = UIImage(named: "Example") else { return }
        
        let beginCIImage = CIImage(image: inputImage)
        
        currentFilter.setValue(beginCIImage, forKey: kCIInputImageKey)
        
        applyProcessing()
    }
    
    func applyProcessing() {
        let currentFilterKeys = currentFilter.inputKeys
        
        if currentFilterKeys.contains(kCIInputIntensityKey) {
            currentFilter.setValue(Float(filterIntensity), forKey: kCIInputIntensityKey)
        }
        
        guard let outputCIImage = currentFilter.outputImage else { return }
        
        if let cgImage = context.createCGImage(outputCIImage, from: outputCIImage.extent) {
            let uiImage = UIImage(cgImage: cgImage)
            image = Image(uiImage: uiImage)
        }
    }
}