faizshukri/humantracking

My final year project. Human Detection and Tracking in Video. Using Nokia Qt with OpenCV library.

humantracking's Issues

Problem with the slider

When user move the slider to move forward or backward of the video, sometime it will return false position of the video. We try to fix it, but seem like kinda error from the OpenCV library itself. So, we can do nothing, just to wait for their developer to fix this problems.

Time Consuming, Performance Worse, and Program Lag

From our first program, we face a lot of error regarding processing time, performance, and program lagging.

After doing some research, we know that we can use thread to enhance our program further. Instead of process the video one by one, we can reduce the time by using parallel processing, or multi threading, that will process the video at the same time. At the same time, the processing function will not bother the GUI function, so the program will run smoothly without lagging

Save all frame

Store all frame that was in the video to the snapshot directory.
Add some feature to skip some of the frames, so it can reduced storage used, processing time, and number of frame generated.

Save current snapshot

Store the current played frame to the directory

Can't load another files

When we facing this problem, it take lots of time to figure out the real problem.

Actually, when we do implement the thread, the whole process have to be revamp. When we want to destroyed a thread, it actually will wait until any running process inside the thread to be finish.

So our solution was, to skip all process if thread destroy was called.

Resource Consuming

When we implement multithreading, all thread will run at the same time. But if we run all thread at the same time, it will use huge amount of user computer resource. Hence will make their performance slow.

So, we use the thread pool. Its like the manager to collection of thread. It will set a maximum thread that will run at a time. This maximum value is taken from the number of core processor of the user's computer. So, it will automatically adjust the performance depending on users computer.