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Design.md

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Design Details

The folowing points will be implemented in MATLAB

Sender's Side:

  • Convert the video stream into frames.

  • Separate each frame into Y, U and V components.

  • Change the position of all pixels in three components Y, U and V by a special key.

  • Convert the message which is to be sent to a one dimension array, and then change the position of the whole message by a key.

  • Encode each 4 bits of the message using Hamming (7, 4) encoder.

  • The result of the encoded data, which consists of 7 bits (4 bits of message + 3 bits of parity) is XORed with the 7 bits of random value using a key.

  • The pixels are then repositioned to the original locations and the video is rebuilt.

Receivers's Side:

  • Convert the video stream into frames.

  • Separate each frame into Y, U and V components.

  • Change the position of all pixel values in the three Y, U, and V components by the special key that was used in the embedding process.

  • Obtain the encoded data from the YUV components and XOR with the random number using the same key that was used in the sender side.

  • Decode 4 bits of the message by the Hamming decoder.

  • Reposition the whole message again into the original order.

  • Convert the message array to two dimensions.