{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Convert pre-trained weights from CSV files to binary format"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "**Important:** before running this notebook, copy the [pre-trained weight CSV files](https://github.com/iwantooxxoox/Keras-OpenFace/tree/master/weights) from the Keras-OpenFace project to the local `weights` directory."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "from model import create_model\n",
    "from utils import load_weights"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Instantiate the [nn4.small2](http://cmusatyalab.github.io/openface/models-and-accuracies/#model-definitions) model of the [OpenFace](https://cmusatyalab.github.io/openface/) project as Keras model."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "nn4_small2 = create_model()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Load the pre-trained model weights from CSV files."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "nn4_small2_weights = load_weights()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Update the Keras model with the loaded weights and save the weights in binary format."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "for name, w in nn4_small2_weights.items():\n",
    "    if nn4_small2.get_layer(name) != None:\n",
    "        nn4_small2.get_layer(name).set_weights(w)\n",
    "\n",
    "nn4_small2.save_weights('weights/nn4.small2.v1.h5')"
   ]
  }
 ],
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