ObjectTrackingWithCamera_app

• Sensor Tower

  • on android platform

    • implemented by java opencv

      • github

        • add README

    • building opencv-android library

      • it is no longer maintained by opencv

        • last maintenance in August, 2018

          • https://sourceforge.net/projects/opencvlibrary/files/opencv-android/

      • found workaround to build opencv-android library

        • using opencv build python script

          • https://answers.opencv.org/question/197296/android-object-tracking/

    • connect android application with opencv-android library as a module

      • https://heartbeat.fritz.ai/a-guide-to-preparing-opencv-for-android-4e9532677809

      • https://android.jlelse.eu/a-beginners-guide-to-setting-up-opencv-android-library-on-android-studio-19794e220f3c

    • based on the development flow on Mac platform

      • "translate" python opencv to android java opencv

        • using MOG background subtractor

        • using KCF tracker

    • orientation of frame is wrong

      • fix by doing matrix calculation

        • describe in codes

    • defined min and max area for bounding boxes

      • for performance

        • if the camera close to the cars, need to adjust min of bounding box, increase the min area

    • issue

      • the speed of the application is still not quick enough

        • usually it has 1 to 3 seconds delay

          • i think the issue is that the phone camera can only process around 10 frame per minute, but the algorithm wants to process around 25 to 30 frame per second.

            • described as the synchronization issue between kcf and camera

      • todo

        • sync phone camera capture speed with the speed of kcf tracker algorithm

          • solution by Melvin

            • on android

          • clair no time to look at the synchronization solution