Have you ever encountered those captivating images crafted entirely from text characters? That's the magic of ASCII art, a creative method for representing visual information using text. This article delves into Python code that empowers you to transform your favorite images into this unique format.
Understanding the Code
- We'll be working with Python and the Pillow library (often shortened to PIL) for image manipulation. Here's a breakdown of the essential functions:
1.Resizing Images (resize_img):
def resize_img(image, new_width=100): width, height = image.size ratio = height / width new_height = int(new_width * ratio) resized_img = image.resize((new_width, new_height)) return resized_img - This function receives an image and an optional new desired width.
- It calculates the proportional height based on the original aspect ratio to maintain proportions during resizing.
2.Converting to Grayscale(pixel_to_grayscale):
def pixel_to_grayscale(image): grayscale_img = image.convert("L") # "L" mode for grayscale return grayscale_img - This function converts the image from its original colors to grayscale.
- Grayscale representations simplify the process of mapping pixel brightness levels to ASCII characters later
3.Converting Pixels to ASCII(pixel_to_ascii):
def pixel_to_ascii(image): pixels = image.getdata() characters = "".join(ASCII_CHAR[pixel // 25] for pixel in pixels) return characters ASCII_CHAR = ["@", "#", "S", "%", "?", "*", "+", ";", ":", ",", "."] - This function is the core of the conversion.
- It iterates through each pixel in the grayscale image and assigns a corresponding ASCII character based on its brightness.
- The ASCII_CHAR list acts as a reference, with darker characters representing darker pixels for a textured effect.
4.Main Function (main):
def main(new_width=100): path = input("Enter the path of the image: \n") try: image = Image.open(path) except Exception as e: print(f"{path} is not a valid path!") print(e) return # Convert to grayscale and ASCII art grayscale_image = pixel_to_grayscale(resize_img(image)) new_image_data = pixel_to_ascii(grayscale_image) pixel_nb = len(new_image_data) ascii_img = "\n".join(new_image_data[i:i + new_width] for i in range(0, pixel_nb, new_width)) print(ascii_img) # Print the ASCII art to the console try: with open("asciiArt.txt", "w") as c: try: c.write(ascii_img) except Exception as e: print(f"Error while writing to the file: {e}") except Exception as e: print(f"Error while opening the file: {e}") main() - This function brings everything together.
- It prompts the user for an image path, handles potential exceptions, and sequentially calls other functions: Resizes the image.
- Converts it to grayscale.
- Converts pixels to ASCII characters.
- Prints the ASCII art to the console.
- Attempts to save the ASCII art to a text file named “asciiArt.txt”
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