deferred processing for better performance of android

[yangga]

Added delayed prediction processing feature for smooth camera frame rendering on Android. After analyzing the ImageAnalysis code of Android, it expected that frame dropout would occur if the analyzer logic declared with setAnalyzer is not processed as fast as possible even if "ImageAnalysis.STRATEGY_KEEP_ONLY_LATEST" is used.
If "deferredProcessing" mode is used, the requested analyze is skipped while the prediction is processed in the sub thread.

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

This PR introduces deferred processing for camera frames in the YOLO Flutter app, optimizing image analysis performance on Android devices.

📊 Key Changes

• Added a deferredProcessing option in the camera setup that delays frame processing.
• Introduced a thread-based executor service to manage deferred frame analysis.
• Updated the camera controller and related classes to handle the new option.

🎯 Purpose & Impact

• Enhanced Performance: By deferring processing, the system avoids overloading with frame data, especially useful on less powerful devices, leading to smoother operation and improved responsiveness. 🚀
• Flexible Configuration: Users now have the option to enable or disable deferred processing based on their device's capabilities or specific application needs. 🤖

[UltralyticsAssistant]

👋 Hello @yangga, thank you for submitting a PR to the ultralytics/yolo-flutter-app 🚀! This is an automated response to help guide you through the contribution process. An Ultralytics engineer will be with you shortly to assist further. Meanwhile, please make sure your PR complies with the following checklist:

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[pderrenger]

@yangga thank you for your contribution! The deferred processing feature sounds like a valuable enhancement for improving performance on Android devices. If you have any specific questions or need further assistance, feel free to ask.

[yangga]

@pderrenger Is there any next step to me? Should I update the document for this commit? Let me know if I have anything to do.

[pderrenger]

Thank you for your contribution! Please ensure the documentation reflects the changes made in your commit, and feel free to submit a pull request for any updates.

[yangga]

@pderrenger I've updated README.md. Thanks.

[pderrenger]

You're welcome! If you need further assistance or have any questions, feel free to ask.