sohaib's profile - activity

Same question in Stackoverflow

I have a video which has frames as shown in my previous image in this question.

Detect markers on a face and find their coordinates

I detected these markers and numbered them as shown in the image given below:

My problem is as follows. After I have detected markers in one frame I need to detect them in another frame and find out how much the marker has moved from its previous location. However on using my code again on the second frame I sometimes in some frames get a different numbering among markers and hence I am not able to track markers from one image to another. Also detecting the markers in each image becomes a cumbersome task and takes a lot of time for a video which has around 200 frames.

How can I track these markers over images so as to know how much a particular marker has moved between frames or simply how can I number these markers such that the numbering never changes viz, the marker numbered 60 remains marker number 60 from frame 1 to frame 200.

As a side question is there a way to actually decrease the processing time such that I don't have to detect the face and eyes in each and every frame (Please refer to the image given in the link in my previous question it makes things clearer).

Thanks GiLevi Ill try that. If you get the time please point me out to a good link or resource that I could get my hands on. Meanwhile Ill try and research the topics on my own.

I have an image of a face. Their are some markers painted with a different color (blue) on this face. There are a total of 60 markers. I tried using the inRange function provided by openCV to detect these markers however using this I may be able to detect the markers but I'm not able to find out the coordinates of these markers. My problem is divided in two parts: 1. I need to find out and number each marker from 1 to 60 and find out its coordinates. 2. Once that is done I need to track those markers on another image of the same person taken at a different time. (Consider it to be like a video with continuous frames. These markers need to calculated at say every 10th frame. What needs to be known is say the distance between marker 1 and marker 5 in image one and in image two)

I am new to openCV and trying to learn its various functions. Even if you cannot point to a specific solution I would be much obliged if I could be pointed towards one direction which would help solve this problem. I am uploading a sample image here.