image_to_ansi.py

#!/usr/bin/env python3
import sys
from PIL import Image

def convert_image_to_ansi(image_path):
    try:
        img = Image.open(image_path)
        width, height = img.size
        if width > 80:
            # Calculate new dimensions preserving aspect ratio
            aspect_ratio = height / width
            new_width = 80
            new_height = round(aspect_ratio * new_width)
            width = new_width
            height = new_height
            img = img.resize((width, height))
        new_height = round(height / 2.15) # terminal cells are taller than wide
        img = img.resize((width, new_height))
        if img.mode != 'RGB':
            img = img.convert('RGB')
        ansi_output = ""
        for y in range(new_height):
            for x in range(width):
                r, g, b = img.getpixel((x, y))
                ansi_output += f"\033[48;2;{r};{g};{b}m "
            ansi_output += "\033[0m\n" # reset color at EOL
        return ansi_output
    except Exception as e:
        return f"Error processing image: {e}"

if __name__ == "__main__":
    if len(sys.argv) < 2:
        print("python image_to_ansi.py <image_path>")
        sys.exit(1)
    image_path = sys.argv[1]
    ansi_art = convert_image_to_ansi(image_path)
    print(ansi_art)