Databases
StackOverflow2013
Postsdbo
POtrack eye pupil in a video
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POtrack eye pupil in a video
    primarykey
    data
    text
    <p>I am working on a project aimed to <strong>track eye pupil</strong>. For this I have made a head-mounted system that captures the images of the eye. Completed with the hardware portion I am <strong>struck in software</strong> part. I am using <strong>opencv</strong>. Please let me know what would be the most efficient way to track the pupil. <strong>Houghcircles</strong> didn't performing well. </p> <p>After that I have also tried with <strong>HSV</strong> filter and here is the code and link to screenshot of the raw-image and processed one. Please help me to resolve this issue. The link also contains video of eye pupil that I am using in this code.</p> <p><a href="https://picasaweb.google.com/118169326982637604860/16November2011?authuser=0&amp;authkey=Gv1sRgCPKwwrGTyvX1Aw&amp;feat=directlink">https://picasaweb.google.com/118169326982637604860/16November2011?authuser=0&amp;authkey=Gv1sRgCPKwwrGTyvX1Aw&amp;feat=directlink</a></p> <p><strong>Code:</strong></p> <pre><code>include "cv.h" include"highgui.h" IplImage* GetThresholdedImage(IplImage* img) { IplImage *imgHSV=cvCreateImage(cvGetSize(img),8,3); cvCvtColor(img,imgHSV,CV_BGR2HSV); IplImage *imgThresh=cvCreateImage(cvGetSize(img),8,1); cvInRangeS(imgHSV,cvScalar(0, 84, 0, 0),cvScalar(179, 256, 11, 0),imgThresh); cvReleaseImage(&amp;imgHSV); return imgThresh; } void main(int *argv,char **argc) { IplImage *imgScribble= NULL; char c=0; CvCapture *capture; capture=cvCreateFileCapture("main.avi"); if(!capture) { printf("Camera could not be initialized"); exit(0); } cvNamedWindow("Simple"); cvNamedWindow("Thresholded"); while(c!=32) { IplImage *img=0; img=cvQueryFrame(capture); if(!img) break; if(imgScribble==NULL) imgScribble=cvCreateImage(cvGetSize(img),8,3); IplImage *timg=GetThresholdedImage(img); CvMoments *moments=(CvMoments*)malloc(sizeof(CvMoments)); cvMoments(timg,moments,1); double moment10 = cvGetSpatialMoment(moments, 1, 0); double moment01 = cvGetSpatialMoment(moments, 0, 1); double area = cvGetCentralMoment(moments, 0, 0); static int posX = 0; static int posY = 0; int lastX = posX; int lastY = posY; posX = moment10/area; posY = moment01/area; // Print it out for debugging purposes printf("position (%d,%d)\n", posX, posY); // We want to draw a line only if its a valid position if(lastX&gt;0 &amp;&amp; lastY&gt;0 &amp;&amp; posX&gt;0 &amp;&amp; posY&gt;0) { // Draw a yellow line from the previous point to the current point cvLine(imgScribble, cvPoint(posX, posY), cvPoint(lastX, lastY), cvScalar(0,255,255), 5); } // Add the scribbling image and the frame... cvAdd(img, imgScribble, img); cvShowImage("Simple",img); cvShowImage("Thresholded",timg); c=cvWaitKey(3); cvReleaseImage(&amp;timg); delete moments; } //cvReleaseImage(&amp;img); cvDestroyWindow("Simple"); cvDestroyWindow("Thresholded"); } </code></pre> <hr> <p>I am able to track the eye and find the center coordinates of pupil precisely. </p> <p>First I thresholded the image taken by the head mounted camera. After that I have used contour finding algorithm then I find the centroid of all the contours. This gives me the center coordinates of eye pupil, this method is working fine in real time and also detecting eye blinking with very good accuracy. </p> <p>Now, my aim is to embed this feature into a game(a racing game). In which If I look to left/right then the car moves left/right and If I blink the car slows down. How could I proceed now??? Would I need a game engine to do that? </p> <p>I heard of some open source game engines compatible with visual studio 2010(unity etc.). Is it feasible??? If yes, how should I proceed ? </p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USBill the Lizard
    1. USsiso
    plurals
    1. PL
      singulars
      1. LTLinked
    1. PL
      singulars
      1. LTLinked
    2. PL
      singulars
      1. LTDuplicate
    3. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POtrack eye pupil in a video
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POtrack eye pupil in a video
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POtrack eye pupil in a video
      1. This table or related slice is empty.
      1. VTUpMod
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload