Converting UIImage to MLMultiArray for Keras Model

Question

In Python, I trained an image classification model with keras to receive input as a [224, 224, 3] array and output a prediction (1 or 0). When I load the save the model and

Answer 1

Did not tried this, but here is how its done for the FOOD101 sample

func preprocess(image: UIImage) -> MLMultiArray? {
        let size = CGSize(width: 299, height: 299)


        guard let pixels = image.resize(to: size).pixelData()?.map({ (Double($0) / 255.0 - 0.5) * 2 }) else {
            return nil
        }

        guard let array = try? MLMultiArray(shape: [3, 299, 299], dataType: .double) else {
            return nil
        }

        let r = pixels.enumerated().filter { $0.offset % 4 == 0 }.map { $0.element }
        let g = pixels.enumerated().filter { $0.offset % 4 == 1 }.map { $0.element }
        let b = pixels.enumerated().filter { $0.offset % 4 == 2 }.map { $0.element }

        let combination = r + g + b
        for (index, element) in combination.enumerated() {
            array[index] = NSNumber(value: element)
        }

        return array
    }

https://github.com/ph1ps/Food101-CoreML