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""" | |
false-colour.py | |
https://github.com/sam210723/himawari-rx | |
Generates false colour images from multiple grayscale channels | |
""" | |
import argparse | |
import colorama | |
from colorama import Fore, Back, Style | |
import glob | |
from PIL import Image | |
argp = argparse.ArgumentParser(description="Generates false colour images from multiple grayscale channels") | |
argp.add_argument("INPUT", action="store", help="Path to folder containing images") | |
argp.add_argument("-r", action="store", help="Red channel (default: B05)", default="B05") | |
argp.add_argument("-g", action="store", help="Green channel (default: B04)", default="B04") | |
argp.add_argument("-b", action="store", help="Blue channel (default: VIS)", default="VIS") | |
argp.add_argument("-e", action="store", help="Image extension (default: PNG)", default="png") | |
args = argp.parse_args() | |
# Globals | |
files = {} | |
Image.MAX_IMAGE_PIXELS = None | |
def init(): | |
""" | |
Locate files and create image groups | |
""" | |
global files | |
# Initialise Colorama | |
colorama.init(autoreset=True) | |
# Search for channel files | |
r = glob.glob(f"{args.INPUT}\\IMG_DK01{args.r}_*.{args.e}") | |
g = glob.glob(f"{args.INPUT}\\IMG_DK01{args.g}_*.{args.e}") | |
b = glob.glob(f"{args.INPUT}\\IMG_DK01{args.b}_*.{args.e}") | |
if len(r) == 0 or len(g) == 0 or len(b) == 0: | |
if len(r) == 0: print(f"{Fore.WHITE}{Back.RED}{Style.BRIGHT}MISSING RED CHANNEL") | |
if len(g) == 0: print(f"{Fore.WHITE}{Back.RED}{Style.BRIGHT}MISSING GREEN CHANNEL") | |
if len(b) == 0: print(f"{Fore.WHITE}{Back.RED}{Style.BRIGHT}MISSING BLUE CHANNEL") | |
print("\nExiting...") | |
exit(1) | |
else: | |
print("Image channels:") | |
print(f" R: {Fore.WHITE}{Back.RED}{Style.BRIGHT}{args.r} \"{r[0]}\"") | |
print(f" G: {Fore.WHITE}{Back.GREEN}{Style.BRIGHT}{args.g} \"{g[0]}\"") | |
print(f" B: {Fore.WHITE}{Back.BLUE}{Style.BRIGHT}{args.b} \"{b[0]}\"") | |
print() | |
process(r[0], g[0], b[0]) | |
def process(r, g, b): | |
""" | |
Create false colour image from individual channels | |
""" | |
print("Loading images...") | |
images = { | |
"R": Image.open(r), | |
"G": Image.open(g), | |
"B": Image.open(b) | |
} | |
# Print image details | |
for i in images: | |
print(f" {i}: {images[i].size[0]}x{images[i].size[1]}") | |
print() | |
# Scale images to 2750px | |
l = 2750 | |
for i in images: | |
if images[i].size[0] != l: | |
print(f"Scaling {i} channel...") | |
images[i] = images[i].resize((l, l)) | |
print() | |
# Combine channels into final image | |
print("Combining channels...\n") | |
out = Image.merge("RGB", (images["R"], images["G"], images["B"])) | |
# Save image to disk | |
fpath = f"{args.INPUT}\\FC.png" | |
out.save(fpath, format="PNG") | |
print(f"Image saved to \"{fpath}\"") | |
try: | |
init() | |
except KeyboardInterrupt: | |
print("Exiting...") | |
exit() |
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