Sync signature of cv2.imread and cv2.imwrite

[grzegorzk]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Simplifying Image Reading and Writing Functions in YOLOv5 🖼️✨

📊 Key Changes

• Renamed parameters in imread and imwrite functions for clarity.
• Refactored imread to accept filename instead of path.
• Updated imwrite function to accept filename and img instead of path and im.

🎯 Purpose & Impact

• 🧬 Consistency: By renaming variables to filename and img, the code becomes more consistent and easier to understand.
• 🚀 Readability: The changes make the code more readable, which can help both current and future developers working on the project.
• 💼 User Experience: For end-users, these internal changes are unlikely to affect the experience but contribute to a more robust and maintainable codebase.

[github-actions]

👋 Hello @grzegorzk, thank you for submitting a YOLOv5 🚀 PR! To allow your work to be integrated as seamlessly as possible, we advise you to:

• ✅ Verify your PR is up-to-date with ultralytics/yolov5 master branch. If your PR is behind you can update your code by clicking the 'Update branch' button or by running git pull and git merge master locally.
• ✅ Verify all YOLOv5 Continuous Integration (CI) checks are passing.
• ✅ Reduce changes to the absolute minimum required for your bug fix or feature addition. "It is not daily increase but daily decrease, hack away the unessential. The closer to the source, the less wastage there is." — Bruce Lee

[glenn-jocher]

@grzegorzk PR is merged. Thank you for your contributions to YOLOv5 🚀 and Vision AI ⭐