Scripting in Python

You have the permission to utilize the codes from class slides, online references (codes obtained from web searches) and AI tools (such as ChatGPT, BERT, etc.) for this assignment, but you must adhere to two conditions:

1. Properly acknowledge the sources in your report. Do not present codes, including those generated by AI tools, as your own work.
2. It is crucial that you thoroughly understand the code you incorporate into your assignment. Do not include any code that you have copy-pasted without a clear understanding. If a line or segment of code seems unclear or confusing, seek additional clarification or refrain from using it. It’s important to ensure that you can explain and justify each part of the code you submit.

Submissions:

You will turn in two files on to canvas.

1. A zip file containing all the codes. The python code should be called wrapper.pyAll your codes should have detailed comments. This will help you to refer to the project before an interview.

A simple report including screenshots/proof that your codes work.Add a screenshot of your output from day 1.Add screenshots from day 2 to illustrate that your C, Haskell and prolog codes work as desired.Indicate progress. Were you able to complete the lab?Output images from the program.Show the output for provided mickey.png file.Rerun the program with any image of your choice. You might have to change the threshold value in the C code. use an image with dimensions 250×250 or smaller. Acknowledge the references you used.

CS 420 – Advanced Programming Languages
Assignment 5 – Scrip;ng in Python – 100 points
In this assignment, you will be writing a simple imperative program in C, functional program in
Haskell and a logical program in prolog. You will leverage the image processing capabilities of
MATLAB and write a script file on python to integrate all the codes written.
Objective:
In this assignment you will
1. Write a MATLAB script to read an input image and process it.
2. Write a C program to apply thresholding operation to obtain a black and white image.
3. Write a Haskell Program to invert the colors of an image.
4. Write a Prolog code to rotate the image.
5. Write a MATLAB script to display all the generated images.
6. Write a wrapper python script to integrate all the written codes and seamless transition
between various programming paradigms.
Submissions:
1. You will turn in two files on to canvas.
1. A zip file containing all the codes. The python code should be called wrapper.py
a. All your codes should have detailed comments. This will help you to refer
to the project before an interview.
2. A simple report including screenshots/proof that your codes work.
a. Add a screenshot of your output from day 1.
b. Add screenshots from day 2 to illustrate that your C, Haskell and prolog
codes work as desired.
c. Indicate progress. Were you able to complete the lab?
d. Output images from the program.
i. Show the output for provided mickey.png file.
ii. Rerun the program with any image of your choice.
e. Acknowledge the references you used.
Task 0: Installing the required software
1. gcc for C
2. ghc for Haskell
3. swipl for Prolog
4. MATLAB
5. python3
Note: all the tools should be accessible via the command line
Task 1: C program
1. Write a C program to read a sequence of number from the command line.
2. Dynamic memory allocation should be leveraged to store the incoming values to a variable.
3. Iterate though the stored array.
a. If the value is greater than threshold – print 255
b. If the value is lower than threshold – print 0
Note: The optimal value of threshold for the provided mickey image is 170. Figure out the
threshold value using trial and error for other images.
Task 2: Haskell Program
1. Write a Haskell function that would subtract the elements in provided list from 255.
2. Haskell program should integrate the IO( ) functionality to allow command line execution
of the code.
Task 3: Prolog Program
1. Write a prolog rule to reverse a list.
2. Write a wrapper rule called main that would read inputs from command line (std_in), call
the reverse_list rule and output the result on command line (std_out)
Task 4: MATLAB Program 1
1. Write a MATLAB program to read and process a greyscale image.
a. The code should first get the image pixel values represented as a matrix.
b. Then convert the matrix to a 1D array.
c. Store the 1D array in a text file. Call the file ‘input.txt’.
Task 5: MATLAB Program 2
1. Write a MATLAB program to read the results of C, Haskell and Prolog codes stored in text
files.
a. The code should read the values as 1D array.
b. The array should be treated as pixel values – unsigned chars.
c. Reshape the array back to a 2D matrix.
d. Visualize the matrix as images and plot the images.
Here is a sample output.
Task 6: Python wrapper program
1. Python code should first run the MATLAB program 1 to generate the input array.
2. Your code should use file read operation should read the array from the text file ‘input.txt’.
3. Call the C Program to perform thresholding.
a. Save the output in a text file. Call the file ‘c_output.txt’.
4. Call the Haskell Program to perform color flip.
a. Save the output in a text file. Call the file ‘haskell_output.txt’.
5. Call the C Program to perform rotation.
a. Save the output in a text file. Call the file ‘prolog_output.txt’.
6. Finally call the MATLAB program 2 to read from the three output files, reconstruct images
and plot them.
a. You may use subplot feature to plot all the images in a single image.
b. Add titles to your plot.
c. Explore other plotting options available to make your output stand out.
Task 7:
•
Include this project on your CV immediately. Your recruiters will be intrigued by this
project and will likely engage in discussions with you about it.
•
Jot down the tasks you accomplished (minor details in the code) for future reference before
your interview.
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