Re-Arragement of the whole folder

Image_Steg/img_steg.py

@@ -1,191 +0,0 @@
-import cv2
-import numpy as np
-
-
-class img_steg:
-    def __init__(self, image_name: str = "image.png", bit_to_hide: list[int] = None) -> None:
-        """
-        Initialize the class
-        :param image_name:  Name of the image to encode or decode
-        :type image_name: str
-        :param bit_to_hide: List of bit position to hide the data (LSB is 1, MSB is 8)
-        :type bit_to_hide: list[int]
-        """
-        self.image_name = image_name
-        self.bit_to_hide = [8 - bit_pos for bit_pos in bit_to_hide] if bit_to_hide else [1]  # Default is LSB
-        self.delimiter = "abc-123-a=="
-
-    def encode(self, secret_data: str = "Hello World") -> np.ndarray:
-        """
-        Encode the secret data in the image
-        :param secret_data: Data to hide in the image
-        :type secret_data: str
-        :return: Encoded Image
-        :rtype: np.ndarray
-        """
-        image = cv2.imread(self.image_name)  # read image
-        n_bytes = image.shape[0] * image.shape[1] * 3 // 8  # Max bytes to encode
-        print("[*] Maximum bytes to encode:", n_bytes)
-        secret_data += self.delimiter  # Add delimiter at the end of data
-        if len(secret_data) > n_bytes:
-            raise ValueError("[!] Insufficient bytes, need a bigger image or less data")
-        print("[*] Encoding Data...")
-
-        # Convert bit to hide position
-        bit_to_hide = self.bit_to_hide
-        data_index = 0
-        binary_secret_data = self.to_bin(secret_data)  # Convert data to binary
-        data_len = len(binary_secret_data)  # size of data to hide
-
-        print(f"[+] Size of data to hide: {data_len}")
-        print("[+] Starting encoding...")
-
-        for row in image:
-            for pixel in row:
-                r, g, b = self.to_bin(pixel)  # Convert RGB Values to binary format
-                for bit_pos in bit_to_hide:
-                    if data_index < data_len:
-                        r = list(r)
-                        r[bit_pos] = binary_secret_data[
-                            data_index]  # hide data into specified bit position of red pixel
-                        pixel[0] = int(''.join(r), 2)
-                        data_index += 1
-                    if data_index < data_len:
-                        g = list(g)
-                        g[bit_pos] = binary_secret_data[
-                            data_index]
-                        pixel[1] = int(''.join(g), 2)
-                        data_index += 1
-                    if data_index < data_len:
-                        b = list(b)
-                        b[bit_pos] = binary_secret_data[
-                            data_index]
-                        pixel[2] = int(''.join(b), 2)
-                        data_index += 1
-                    if data_index >= data_len:
-                        break
-                pixel[0] = int(''.join(r), 2)  # convert modified binary back to integer for red pixel
-                pixel[1] = int(''.join(g), 2)  # convert modified binary back to integer for green pixel
-                pixel[2] = int(''.join(b), 2)  # convert modified binary back to integer for blue pixel
-
-                if data_index >= data_len:
-                    break
-
-        print(f"[+] Encoding completed")
-
-        return image
-
-    def decode(self) -> str:
-        """
-        Decode the data hidden in the image
-
-        :return: Decoded Data: String
-        """
-        print("[+] Decoding...")
-        image = cv2.imread(self.image_name)  # read image
-        binary_data = ""
-        bit_to_hide = self.bit_to_hide
-
-        print(f"[+] Extracting data from image...")
-        for row in image:
-            for pixel in row:
-                r, g, b = self.to_bin(pixel)
-                for bit_pos in bit_to_hide:
-                    binary_data += r[bit_pos]  # retrieve data from specified bit position of red pixel
-                    binary_data += g[bit_pos]  # retrieve data from specified bit position of green pixel
-                    binary_data += b[bit_pos]  # retrieve data from specified bit position of blue pixel
-
-        print(f"[+] Forming binary data completed")
-        print(f"[+] Decoding binary data...")
-
-        # Split by 8 bits
-        all_bytes = [binary_data[i: i + 8] for i in range(0, len(binary_data), 8)]
-        # Convert from bits to characters
-        decoded_data = ""
-        for byte in all_bytes:
-            decoded_data += chr(int(byte, 2))
-            if decoded_data[-len(self.delimiter):] == self.delimiter:
-                break
-
-        print(f"[+] Decoding completed")
-        return decoded_data[:-len(self.delimiter)]
-
-    def to_bin(self, data: str) -> str | list[str]:
-        """
-        Convert data to binary format as string
-
-        :param data: Data to convert
-        :type data: str
-        :return: Binary Data
-        :rtype: str | list[str]
-        """
-        if isinstance(data, str):
-            return ''.join([format(ord(i), "08b") for i in data])
-        elif isinstance(data, bytes) or isinstance(data, np.ndarray):
-            return [format(i, "08b") for i in data]
-        elif isinstance(data, int) or isinstance(data, np.unit8):
-            return format(data, "08b")
-        else:
-            raise TypeError("Type not supported")
-
-    def from_bin(self, data: str) -> str:
-        """
-        # UNUSED
-        Convert binary `data` back to the original format
-
-        :param data: Binary Data
-        :type data: str
-        :return: Original Data
-        :rtype: str
-        """
-        return ''.join([chr(int(data[i:i + 8], 2)) for i in range(0, len(data), 8)])
-
-
-def main():
-    # Variables
-    image_name = "test.bmp"
-    encoded_image_name = "encoded_image.bmp"
-    secret_data = ""
-    with open("../Txt_Steg/secret_data.txt", "r") as f:
-        secret_data = f.read()
-
-    # Generate random bit positions to hide data into image for testing
-    bit_to_hide = np.random.choice(range(1, 9), np.random.randint(1, 9), replace=False)
-    bit_to_hide = list(bit_to_hide)
-    bit_to_hide.sort()
-    print(f"Bits to hide: {bit_to_hide}")
-
-    print("Welcome to Image Steganography")
-
-    # Encode the data into the image
-    encoded_image = img_steg(image_name=image_name, bit_to_hide=bit_to_hide).encode(secret_data)
-    cv2.imwrite(encoded_image_name, encoded_image)
-
-    # Decode the data from the image
-    decoded_data = img_steg(image_name=encoded_image_name, bit_to_hide=bit_to_hide).decode()
-    print("Decoded Data:", decoded_data)
-
-
-if __name__ == "__main__":
-    main()
-
-##############################
-#  _   _
-# | | | |___  __ _  __ _  ___
-# | | | / __|/ _` |/ _` |/ _ \
-# | |_| \__ \ (_| | (_| |  __/
-#  \___/|___/\__,_|\__, |\___|
-#                  |___/
-##############################
-#
-# Initialise class with image name and bit to hide
-#
-# image_name = image name with extension (String)
-# bit_to_hide = [1, 2, 3] (Please Sort the list in ascending order)
-#
-# To encode:
-# encoded_image = img_steg(image_name, bit_to_hide).encode(secret_data)
-#
-# To decode:
-# decoded_data = img_steg(image_name, bit_to_hide).decode()
-# Both are string types