backend/color_annotations.py

#!/usr/bin/env python

"""Extract color features from the generated textile images."""

import os
#os.environ["TOKENIZERS_PARALLELISM"] = "false"
from tqdm import tqdm
#from transformers import pipeline
import numpy as np
import pandas as pd
import time

import click
from PIL import Image
import math 
import pickle
from glob import glob 

import matplotlib.pyplot as plt
import matplotlib.patches as patches
import matplotlib.image as mpimg
import cv2
import extcolors

from colormap import rgb2hex
from PIL import Image
from matplotlib.offsetbox import OffsetImage, AnnotationBbox

def color_to_df(input):
    colors_pre_list = str(input).replace('([(','').split(', (')[0:-1]
    df_rgb = [i.split('), ')[0] + ')' for i in colors_pre_list]
    df_percent = [i.split('), ')[1].replace(')','') for i in colors_pre_list]
    
    #convert RGB to HEX code
    df_color_up = [rgb2hex(int(i.split(", ")[0].replace("(","")),
                          int(i.split(", ")[1]),
                          int(i.split(", ")[2].replace(")",""))) for i in df_rgb]
    
    df = pd.DataFrame(zip(df_color_up, df_percent), columns = ['c_code','occurence'])
    return df

def extract_color(input_image, tolerance, zoom, outpath, save=None):
    colors_x = extcolors.extract_from_image(input_image, tolerance = tolerance, limit = 13)
    df_color = color_to_df(colors_x)
    
    #annotate text
    list_color = list(df_color['c_code'])
    list_precent = [int(i) for i in list(df_color['occurence'])]
    text_c = [c + ' ' + str(round(p*100/sum(list_precent),1)) +'%' for c, p in zip(list_color, list_precent)]
    colors = list(df_color['c_code'])
    if '#000000' in colors:
        colors.remove('#000000')
    return colors[:3]


@click.command()
@click.option('--genimages_dir', help='Where the output images are saved', type=str, required=True, metavar='DIR')

def annotate_textile_images(
    genimages_dir: str,
    
):
    """Produce annotations for the generated images.
    \b
    # 
    python annotate_textiles.py --genimages_dir /home/ludosc/data/stylegan-10000-textile-upscale
    """
    colours = []
    pickle_files = glob(genimages_dir + '/imgs0000*.pkl')
    for pickle_file in pickle_files:
        print('Using pickle file: ', pickle_file)
        with open(pickle_file, 'rb') as f:
            info = pickle.load(f)

        listlen = len(info['fname'])
        os.makedirs('/data/ludosc/colour_palettes/', exist_ok=True)
        for i,im in enumerate(tqdm(info['fname'])):
            try:
                top_cols = exact_color(im, 12, 5, '/data/ludosc/colour_palettes/' + im.split('/')[-1])
                colours.append([im]+top_cols)
            except Exception as e:
                print(e)
            if i % 1000 == 0:
                df = pd.DataFrame(colours, columns=['fname', 'top1col', 'top2col', 'top3col'])
                print(df.head())
                df.to_csv(genimages_dir + f'/top_three_colours.csv', index=False)
                
        df = pd.DataFrame(colours, columns=['fname', 'top1col', 'top2col', 'top3col'])
        print(df.head())
        df.to_csv(genimages_dir + f'/final_sim_{os.path.basename(pickle_file.split(".")[0])}.csv', index=False)
        
#----------------------------------------------------------------------------

if __name__ == "__main__":
    annotate_textile_images() # pylint: disable=no-value-for-parameter

#----------------------------------------------------------------------------