[Bug]:

### Is there an existing issue for this?

- [x] I have searched the existing issues.

### Current Behavior

When executing Python/SIFT_Algorithm/SIFT_Algorithm.py, the script crashes due to multiple fatal runtime errors:
- Undefined Module Alias: On lines 86–87, the script calls cv.waitKey(0) and cv.destroyAllWindows(). Since OpenCV is imported as cv2, Python immediately crashes on exit with:
NameError: name 'cv' is not defined. Did you mean: 'cv2'?
- Array Overwrite Causing TypeError: On line 20, the input image matrix is read into variable image. On line 55, image = image_name[-1].split(".") reassigns image to a list of strings. When passed into cv2.drawMatches() on line 70, OpenCV throws:
TypeError: Expected Ptr for argument 'img1'
- Broken Image File Export: On line 57, cv2.imwrite("output", img) passes the hardcoded string "output" without an extension instead of the formatted output variable constructed on line 56.

### Expected Behavior

- The script should run keypoint detection, descriptor extraction, brute-force matching, and result rendering without runtime errors.
- The image NumPy ndarray matrix (cv::Mat) should remain unmodified so cv2.drawMatches() can render matching keypoints between images.
- File path string parsing should use a separate variable name (e.g., base_filename) to avoid mutating image data.
- Processed feature-detected images should be saved correctly with a valid .jpg filename extension.
- Window cleanup must call cv2.waitKey(0) and cv2.destroyAllWindows() cleanly.

### To Reproduce

- Step 1: Clone the repository and navigate to the directory:
git clone https://github.com/HarshCasper/Rotten-Scripts.git
cd Rotten-Scripts/Python/SIFT_Algorithm
- Step 2: Install dependencies:
pip install opencv-python opencv-contrib-python numpy
- Step 3: Run the script:
python SIFT_Algorithm.py
- Step 4: Enter any valid image path when prompted:
Enter the path of the image: sample.jpg
- Step 5: Observe the crashes during feature matching (TypeError) and GUI window cleanup (NameError).

### Anything else?

- Environment: Tested across Windows, macOS, and Linux on Python 3.8 - 3.12.
- Proposed Code Fix:
- Line 55-57:
base_filename = os.path.splitext(os.path.basename(path))[0]
output_path = f"{base_filename}_detected.jpg"
cv2.imwrite(output_path, img)
- Line 86-87:
cv2.waitKey(0)
cv2.destroyAllWindows()
- Contribution: I have tested the complete fix locally and verified clean execution. Please assign this issue to me so I can open a Pull Request.

### Code of Conduct

- [x] I agree to follow this project's Code of Conduct

Start with Python/SIFT_Algorithm/SIFT_Algorithm.py, especially lines 20, 55–57, 70, and 86–87, then reproduce the failure using the documented OpenCV and NumPy setup. Confirm that the image remains usable for matching, the processed image is exported with a .jpg filename, and cleanup completes without runtime errors.

Written by the indexing model from the issue text.