Thesis-NoiseDetection-CNN/generate/generate_reconstructed_data.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Wed Jun 19 11:47:42 2019

@author: jbuisine
"""

# main imports
import sys, os, argparse
import numpy as np

# images processing imports
from PIL import Image
from ipfml.processing.segmentation import divide_in_blocks

# modules imports
sys.path.insert(0, '') # trick to enable import of main folder module

import custom_config as cfg
from modules.utils.data import get_scene_image_quality
from modules.classes.Transformation import Transformation

# getting configuration information
zone_folder             = cfg.zone_folder
min_max_filename        = cfg.min_max_filename_extension

# define all scenes values
scenes_list             = cfg.scenes_names
scenes_indexes          = cfg.scenes_indices
path                    = cfg.dataset_path
zones                   = cfg.zones_indices
seuil_expe_filename     = cfg.seuil_expe_filename

features_choices        = cfg.features_choices_labels
output_data_folder      = cfg.output_data_folder

generic_output_file_svd = '_random.csv'

def generate_data(transformation):
    """
    @brief Method which generates all .csv files from scenes
    @return nothing
    """

    scenes = os.listdir(path)
    # remove min max file from scenes folder
    scenes = [s for s in scenes if min_max_filename not in s]

    # go ahead each scenes
    for id_scene, folder_scene in enumerate(scenes):

        print(folder_scene)
        scene_path = os.path.join(path, folder_scene)

        # construct each zones folder name
        zones_folder = []
        features_folder = []
        zones_threshold = []

        # get zones list info
        for index in zones:
            index_str = str(index)
            if len(index_str) < 2:
                index_str = "0" + index_str

            current_zone = "zone"+index_str
            zones_folder.append(current_zone)
            zone_path = os.path.join(scene_path, current_zone)

            with open(os.path.join(zone_path, cfg.seuil_expe_filename)) as f:
                zones_threshold.append(int(f.readline()))

            # custom path for feature
            feature_path = os.path.join(zone_path, transformation.getName())

            if not os.path.exists(feature_path):
                os.makedirs(feature_path)

            # custom path for interval of reconstruction and feature
            feature_interval_path = os.path.join(zone_path, transformation.getTransformationPath())
            features_folder.append(feature_interval_path)

            if not os.path.exists(feature_interval_path):
                os.makedirs(feature_interval_path)

            # create for each zone the labels folder
            labels = [cfg.not_noisy_folder, cfg.noisy_folder]

            for label in labels:
                label_folder = os.path.join(feature_interval_path, label)

                if not os.path.exists(label_folder):
                    os.makedirs(label_folder)

        # get all images of folder
        scene_images = sorted([os.path.join(scene_path, img) for img in os.listdir(scene_path) if cfg.scene_image_extension in img])
        number_scene_image = len(scene_images)

        # for each images
        for id_img, img_path in enumerate(scene_images):

            current_img = Image.open(img_path)
            img_blocks = divide_in_blocks(current_img, cfg.keras_img_size)

            current_quality_index = int(get_scene_image_quality(img_path))

            for id_block, block in enumerate(img_blocks):

                ##########################
                # Image computation part #
                ##########################
                
                # pass block to grey level
                output_block = transformation.getTransformedImage(block)
                output_block = np.array(output_block, 'uint8')
                
                # current output image
                output_block_img = Image.fromarray(output_block)

                label_path = features_folder[id_block]

                # get label folder for block
                if current_quality_index > zones_threshold[id_block]:
                    label_path = os.path.join(label_path, cfg.not_noisy_folder)
                else:
                    label_path = os.path.join(label_path, cfg.noisy_folder)

                # Data augmentation!
                rotations = [0, 90, 180, 270]
                img_flip_labels = ['original', 'horizontal', 'vertical', 'both']

                horizontal_img = output_block_img.transpose(Image.FLIP_LEFT_RIGHT)
                vertical_img = output_block_img.transpose(Image.FLIP_TOP_BOTTOM)
                both_img = output_block_img.transpose(Image.TRANSPOSE)

                flip_images = [output_block_img, horizontal_img, vertical_img, both_img]

                # rotate and flip image to increase dataset size
                for id, flip in enumerate(flip_images):
                    for rotation in rotations:
                        rotated_output_img = flip.rotate(rotation)

                        output_reconstructed_filename = img_path.split('/')[-1].replace('.png', '') + '_' + zones_folder[id_block] + cfg.post_image_name_separator
                        output_reconstructed_filename = output_reconstructed_filename + img_flip_labels[id] + '_' + str(rotation) + '.png'
                        output_reconstructed_path = os.path.join(label_path, output_reconstructed_filename)

                        rotated_output_img.save(output_reconstructed_path)

            print(transformation.getName() + "_" + folder_scene + " - " + "{0:.2f}".format(((id_img + 1) / number_scene_image)* 100.) + "%")
            sys.stdout.write("\033[F")

        print('\n')

    print("%s_%s : end of data generation\n" % (transformation.getName(), transformation.getParam()))


def main():

    parser = argparse.ArgumentParser(description="Compute and prepare data of feature of all scenes using specific interval if necessary")

    parser.add_argument('--features', type=str, 
                                     help="list of features choice in order to compute data",
                                     default='svd_reconstruction, ipca_reconstruction',
                                     required=True)
    parser.add_argument('--params', type=str, 
                                    help="list of specific param for each feature choice (See README.md for further information in 3D mode)", 
                                    default='100, 200 :: 50, 25',
                                    required=True)

    args = parser.parse_args()

    p_features  = list(map(str.strip, args.features.split(',')))
    p_params   = list(map(str.strip, args.params.split('::')))

    transformations = []

    for id, feature in enumerate(p_features):

        if feature not in features_choices or feature == 'static':
            raise ValueError("Unknown feature, please select a correct feature (`static` excluded) : ", features_choices)

        transformations.append(Transformation(feature, p_params[id]))

    # generate all or specific feature data
    for transformation in transformations:
        generate_data(transformation)

if __name__== "__main__":
    main()