/// <summary>
/// Constructs and returns an instance of <see cref="AndroidChestXRayAIClient"/>
/// with the models loaded using the provided <see cref="AssetManager"/>.
/// </summary>
/// <param name="assets">An <see cref="AssetManager"/> that can be used to load the model files.</param>
/// <returns>The constructed <see cref="AndroidChestXRayAIClient"/> instance.</returns>
public static AndroidChestXRayAIClient NewInstance(AssetManager assets)
{
TensorFlowImageModel model = new TensorFlowImageModel(
assets,
ModelConstants.AssetPath,
ModelConstants.InputTensorName,
new string[] { ModelConstants.OutputNodeName, ModelConstants.ActivationMapNodeName },
new int[] { Enum.GetValues(typeof(ChestCondition)).Length, CAMProcessor.Rows * CAMProcessor.Cols * CAMProcessor.Channels });
System.Diagnostics.Debug.WriteLine("ChestXRay TensorFlow ML Model loaded");
CAMProcessor camProcessor = new CAMProcessor(CAMProcessor.ModelOutputOrder.RCCh);
return(new AndroidChestXRayAIClient(model, camProcessor));
}
/// <summary>
/// Constructs and returns an instance of <see cref="iOSChestXRayAIClient"/> with the CoreML models loaded.
/// </summary>
/// <returns>The constructed <see cref="iOSChestXRayAIClient"/> instance.</returns>
public static iOSChestXRayAIClient NewInstance()
{
CoreMLImageModel scoreModel = new CoreMLImageModel(
ModelConstants.ScoreModel.ResourceName,
ModelConstants.ScoreModel.InputFeatureName,
ModelConstants.ScoreModel.OutputFeatureName);
System.Diagnostics.Debug.WriteLine($"{ModelConstants.ScoreModel.ResourceName} CoreML Model loaded");
CoreMLImageModel camModel = new CoreMLImageModel(
ModelConstants.CAMModel.ResourceName,
ModelConstants.CAMModel.InputFeatureName,
ModelConstants.CAMModel.OutputFeatureName);
System.Diagnostics.Debug.WriteLine($"{ModelConstants.CAMModel.ResourceName} CoreML Model loaded");
CAMProcessor camProcessor = new CAMProcessor(CAMProcessor.ModelOutputOrder.ChRC);
return(new iOSChestXRayAIClient(scoreModel, camModel, camProcessor));
}
/// <summary>
/// Initializes a new instance of the <see cref="AndroidChestXRayAIClient"> class.
/// This constructor is private since this class is responsible for both instantiating and disposing of the IAIImageModel objects,
/// so we want to limit the instantiation of this class to within this class itself (to prevent externally created IAIImageModel objects from being passed into the class).
/// </summary>
/// <param name="model">An AI model that can produce outputs for both scores and CAMs (index 0 of the model output should be scores, index 1 should be CAM data)</param>
/// <param name="camProcessor">An instance of <see cref="CAMProcessor"/> that can process the CAM output from the provided model.</param>
private AndroidChestXRayAIClient(IAIImageModel <float[][]> model, CAMProcessor camProcessor) : base(camProcessor)
{
this.model = model;
}
/// <summary>
/// Initializes a new instance of the <see cref="iOSChestXRayAIClient"> class.
/// This constructor is private since this class is responsible for both instantiating and disposing of the IAIImageModel objects,
/// so we want to limit the instantiation of this class to within this class itself (to prevent externally created IAIImageModel objects from being passed into the class).
/// </summary>
private iOSChestXRayAIClient(IAIImageModel <float[]> scoreModel, IAIImageModel <float[]> camModel, CAMProcessor camProcessor) : base(camProcessor)
{
this.scoreModel = scoreModel;
this.camModel = camModel;
}
