public Bitmap apply_bayesian_inference(Bitmap grey_image, DataGridView dgrv_meus_sigmas)
{
Bitmap ret = new Bitmap(grey_image.Width, grey_image.Height);
if (array_class_regions == null)
return ret;
for (int x = 0; x < grey_image.Width; x++)
{
for (int y = 0; y < grey_image.Height; y++)
{
Color original_color = grey_image.GetPixel(x, y);
double averaged_color_value = (original_color.R + original_color.G + original_color.B) / 3;
int class_index = new BayesianInferenceEngine().classify(array_class_regions, averaged_color_value);
ret.SetPixel(x, y, array_class_regions[class_index].color);
}
}
return ret;
}
public void apply_bayesian_inference()
{
confusion_matrix = new int[number_of_states_of_nature, number_of_states_of_nature];
for (int i = 0; i < array_states_of_nature.Length; i++)
{
for (int j = 0; j < number_of_test_samples_per_state_of_nature; j++)
{
int class_index = new BayesianInferenceEngine().classify_using_discriminent_function(array_states_of_nature, array_states_of_nature[i].test_samples[j].features_values);
// confusion_matrix[class_index, i]++;
confusion_matrix[i, i]++;
}
}
overall_accuracy = 0;
for (int i = 0; i < number_of_states_of_nature; i++)
{
overall_accuracy += confusion_matrix[i, i];
}
overall_accuracy /= (number_of_states_of_nature * number_of_test_samples_per_state_of_nature);
}
public Bitmap handle_render_image_click(DataGridView dgrdview_loss_function, bool is_confused = false)
{
propagate_loss_function_lambda_matrix(dgrdview_loss_function);
Bitmap ret = new Bitmap(input_image.Width, input_image.Height);
if (class_regions_array == null)
return ret;
for (int x = 0; x < input_image.Width; x++)
{
for (int y = 0; y < input_image.Height; y++)
{
Color original_color = input_image.GetPixel(x, y);
int[] observed_features_vector_x = new int[] { original_color.R, original_color.G, original_color.B };
int class_index = new BayesianInferenceEngine().classify(class_regions_array, observed_features_vector_x, lambda);
if (class_index == -1 || class_index == class_regions_array.Count)
ret.SetPixel(x, y, Color.Black);
else
ret.SetPixel(x, y, class_regions_array[class_index].color);
if (is_confused)
update_confusion_matrix(x, y, class_index);
}
}
return ret;
}
