cpp : Added documentation

cpp/ViolaJones_device.hpp

@@ -0,0 +1,39 @@
+#pragma once
+#include "data.hpp"
+
+/**
+ * @brief Transform the input images in integrated images.
+ *
+ * @param X Dataset of images
+ * @return Dataset of integrated images
+ */
+np::Array<uint32_t> set_integral_image(const np::Array<uint8_t>&) noexcept;
+
+/**
+ * @brief Apply the features on a integrated image dataset.
+ *
+ * @param feats Features to apply
+ * @param X_ii Integrated image dataset
+ * @return Applied features
+ */
+np::Array<int32_t> apply_features(const np::Array<uint8_t>&, const np::Array<uint32_t>&) noexcept;
+
+/**
+ * @brief Train the weak classifiers on a given dataset.
+ *
+ * @param X_feat Feature images dataset
+ * @param X_feat_argsort Sorted indexes of the integrated features
+ * @param y Labels of the features
+ * @param weights Weights of the features
+ * @return Trained weak classifiers
+ */
+np::Array<float64_t> train_weak_clf(const np::Array<int32_t>&, const np::Array<uint16_t>&, const np::Array<uint8_t>&,
+					const np::Array<float64_t>&) noexcept;
+
+/**
+ * @brief Perform an indirect sort on each column of a given 2D array
+ *
+ * @param a 2D Array to sort
+ * @return 2D Array of indices that sort the array
+ */
+np::Array<uint16_t> argsort_2d(const np::Array<int32_t>&) noexcept;