\[ \begin{align}\begin{aligned}\newcommand\blank{~\underline{\hspace{1.2cm}}~}\\% Bold symbols (vectors) \newcommand\bs[1]{\mathbf{#1}}\\% Differential \newcommand\dd[2][]{\mathrm{d}^{#1}{#2}} % use as \dd, \dd{x}, or \dd[2]{x}\\% Poor man's siunitx \newcommand\unit[1]{\mathrm{#1}} \newcommand\num[1]{#1} \newcommand\qty[2]{#1~\unit{#2}}\\\newcommand\per{/} \newcommand\squared{{}^2} \newcommand\cubed{{}^3} % % Scale \newcommand\milli{\unit{m}} \newcommand\centi{\unit{c}} \newcommand\kilo{\unit{k}} \newcommand\mega{\unit{M}} % % Percent \newcommand\percent{\unit{\%}} % % Angle \newcommand\radian{\unit{rad}} \newcommand\degree{\unit{{}^\circ}} % % Time \newcommand\second{\unit{s}} \newcommand\s{\second} \newcommand\minute{\unit{min}} \newcommand\hour{\unit{h}} % % Distance \newcommand\meter{\unit{m}} \newcommand\m{\meter} \newcommand\inch{\unit{in}} \newcommand\foot{\unit{ft}} % % Force \newcommand\newton{\unit{N}} \newcommand\kip{\unit{kip}} % kilopound in "freedom" units - edit made by Sri % % Mass \newcommand\gram{\unit{g}} \newcommand\g{\gram} \newcommand\kilogram{\unit{kg}} \newcommand\kg{\kilogram} \newcommand\grain{\unit{grain}} \newcommand\ounce{\unit{oz}} % % Temperature \newcommand\kelvin{\unit{K}} \newcommand\K{\kelvin} \newcommand\celsius{\unit{{}^\circ C}} \newcommand\C{\celsius} \newcommand\fahrenheit{\unit{{}^\circ F}} \newcommand\F{\fahrenheit} % % Area \newcommand\sqft{\unit{sq\,\foot}} % square foot % % Volume \newcommand\liter{\unit{L}} \newcommand\gallon{\unit{gal}} % % Frequency \newcommand\hertz{\unit{Hz}} \newcommand\rpm{\unit{rpm}} % % Voltage \newcommand\volt{\unit{V}} \newcommand\V{\volt} \newcommand\millivolt{\milli\volt} \newcommand\mV{\milli\volt} \newcommand\kilovolt{\kilo\volt} \newcommand\kV{\kilo\volt} % % Current \newcommand\ampere{\unit{A}} \newcommand\A{\ampere} \newcommand\milliampereA{\milli\ampere} \newcommand\mA{\milli\ampere} \newcommand\kiloampereA{\kilo\ampere} \newcommand\kA{\kilo\ampere} % % Resistance \newcommand\ohm{\Omega} \newcommand\milliohm{\milli\ohm} \newcommand\kiloohm{\kilo\ohm} % correct SI spelling \newcommand\kilohm{\kilo\ohm} % "American" spelling used in siunitx \newcommand\megaohm{\mega\ohm} % correct SI spelling \newcommand\megohm{\mega\ohm} % "American" spelling used in siunitx % % Inductance \newcommand\henry{\unit{H}} \newcommand\H{\henry} \newcommand\millihenry{\milli\henry} \newcommand\mH{\milli\henry} % % Power \newcommand\watt{\unit{W}} \newcommand\W{\watt} \newcommand\milliwatt{\milli\watt} \newcommand\mW{\milli\watt} \newcommand\kilowatt{\kilo\watt} \newcommand\kW{\kilo\watt} % % Energy \newcommand\joule{\unit{J}} \newcommand\J{\joule} % % Composite units % % Torque \newcommand\ozin{\unit{\ounce}\,\unit{in}} \newcommand\newtonmeter{\unit{\newton\,\meter}} % % Pressure \newcommand\psf{\unit{psf}} % pounds per square foot \newcommand\pcf{\unit{pcf}} % pounds per cubic foot \newcommand\pascal{\unit{Pa}} \newcommand\Pa{\pascal} \newcommand\ksi{\unit{ksi}} % kilopound per square inch \newcommand\bar{\unit{bar}} \end{aligned}\end{align} \]

Feb 17, 2025 | 226 words | 2 min read

11.2.3. Task 3

Learning Objectives

• Convert a binary message into readable text.

Task Instructions

Save the flowcharts for this task in tp1_team_3_teamnumber.pdf You will also need to include these flowcharts in your final report.

1. Write Python code that converts a binary string into ASCII text. Each character in the message is represented by 8 bits (1 byte). Convert each byte into its corresponding ASCII character and append it to a final message string. Name this program tp1_team_3_partial_teamnumber.py.

   Sample Output

   Use the values in Table 11.13 below to test your program.

   Table 11.13 Test Cases

   Case	binary text
   1	0100100001100101011011000110110001101111
   2	0111011101101111011100100110110001100100

   Ensure your program’s output matches the provided samples exactly. This includes all characters, white space, and punctuation. In the samples, user input is highlighted like this for clarity, but your program should not highlight user input in this way.

   Case 1 Sample Output

   $ python3 tp1_team_3_teamnumber.py Enter the binary message: 0100100001100101011011000110110001101111 Converted Text: Hello

   Case 2 Sample Output

   $ python3 tp1_team_3_teamnumber.py Enter the binary message: 0111011101101111011100100110110001100100 Converted Text: world

2. Integrate this code into the LSB extraction code from Task 2 to extract and display the hidden message in a human-readable format. Name this program tp1_team_3_teamnumber.py.

   Sample Output

   Use the values in Table 11.14 below to test your program.

   Table 11.14 Test Cases

   Case	image_path	start_seq	end_seq
   1	ref_col_p.png	123	*&^
   2	ref_gry_p.png	abc	789
   3	ref_gry_p.png	000	777

   Ensure your program’s output matches the provided samples exactly. This includes all characters, white space, and punctuation. In the samples, user input is highlighted like this for clarity, but your program should not highlight user input in this way.

   Case 1 Sample Output

   $ python3 tp1_team_3_teamnumber.py Enter the path of the image you want to load: ref_col_p.png Enter the start sequence: 123 Enter the end sequence: *&^ Below is the img_array output of ref_col_p.png: Extracted Message: 011100110110010101100011011100100110010101110100 Converted Text: secret

   Case 2 Sample Output

   $ python3 tp1_team_3_teamnumber.py Enter the path of the image you want to load: ref_gry_p.png Enter the start sequence: abc Enter the end sequence: 789 Below is the img_array output of ref_gry_p.png: Extracted Message: 0110100001100101011011000110110001101111 Converted Text: hello

   Case 3 Sample Output

   $ python3 tp1_team_3_teamnumber.py Enter the path of the image you want to load: ref_gry_p.png Enter the start sequence: 000 Enter the end sequence: 777 Below is the img_array output of ref_gry_p.png: Start or end sequence not found in the image.

Table 11.15 Deliverables

Deliverables	Description
tp1_team_3_teamnumber.py	Your completed Python code.
tp1_team_3_teamnumber.pdf	Flowchart(s) for this task.