RONI Based Secured and Authenticated Indexing of Lung CT Images

Algorithm 2

Indexing algorithm.

Input: Lung CT image

Output: Indexed lung CT image

begin

  convert the input image into a single column vector

  check if the image size is sufficient to accommodate the string

  for each character in the string

    for each bit in the character

        calculate the index of the pixels to be modified

        alter the bit to insert the string

    end for

  end for

  for each bit of character cap

      calculate the index

      update the bit to indicate end of the string

  end for

  return indexed image

end