opencv - Best Facial Landmark that can be easily extracted from NIR Image? -

-

i'm playing eye gaze estimation using ir camera. far have detected 2 pupil center points follows:

  1. detect face using haar face cascade & set roi face.
  2. detect eyes using haar eye cascade & name left & right eye respectively.
  3. detect pupil center thresholding eye region & found pupil center.

so far i've tried find gaze direction using haar eye boundary region. haar eye rect not showing eye corner points. results poor.

then i've tried tried detect eye corner points using gftt, harriscorners & fast since i'm using nir camera eye corner points not visible & cant able exact corner positions.so i'm stuck here!

what else best feature can tracked face? heard flandmark think not work in ir captured images.

is there feature can extracted face images? here i've attached sample output image. enter image description here enter image description here

i suggest flandmark, if intuition opposite - i've used in master thesis (which head pose estimation, related topic). , if question whether work example image you've provided, think might detect features - on gray scaled image. think in flandmark convert image grayscale before applying detector (like haar detector works). moreover, surprisingly works low resolution images advantage (especially when you're saying eye corners not visible). , flandmark can detect both eye corners, mouth corners , nose tip (actually not rely on last one, experience detecting nose tip on single image quite noisy, works fine image sequence filtering e.g. average, kalman). if decide use technique , works, please let know!


Comments

Post a Comment

Popular posts from this blog

c++ - QTextObjectInterface with Qml TextEdit (QQuickTextEdit) -

-
i registred handler simple qtextobjectinterface , draws 10x10 red rectangle. when used qtextedit in normal qwidget app, worked. when used qquicktextedit (textedit qml component) in qt quick app, doesn't worked (nothing drawed, rectangle in textedit reserved, because when change cursor position, notice there something, empty space, nothing drawed. qtextobjectinterface intrinsicsize method called (that explains why see there empty space 10x10), drawobject method isn't. i did research , found problem here: qquicktextedit.cpp qt 5.3.0 sources (line 1821) qsgnode *qquicktextedit::updatepaintnode(qsgnode *oldnode, updatepaintnodedata *updatepaintnodedata) { . . . if (textframe->firstposition() > textframe->lastposition() && textframe->frameformat().position() != qtextframeformat::inflow) { updatenodetransform(node, d->document->documentlayout()->frameboundingrect(textframe).topleft()); c...
Read more

javascript - angular ng-required radio button not toggling required off in firefox 33, OK in chrome -

-
i trying toggle required attribute on radio button using angular show html5 popup. i cannot following code function correctly in firefox 33. function correctly in chrome. required property being toggled via checkbox value, in firefox, when set false radio button still acts required , shows html5 required popup. see plnkr below example doesn't work me in ff 33. <!doctype html> <html> <head> <script data-require="angular.js@*" data-semver="1.3.1" src="//code.angularjs.org/1.3.1/angular.js"></script> <link href="style.css" rel="stylesheet" /> <script src="script.js"></script> </head> <body ng-app="myapp"> <script> angular.module('myapp',[]) .controller('mycontroller',['$scope',function($scope) { $scope.foorequired=true; $scope.submitform = function() { $scope.submitmessage = ...
Read more

xcode - Swift Playground - Files are not readable -

-
Image
files not readable in swift playground . how make files readable? same code runs on xcode terminal app, fails on swift playground. demo code below. import foundation println("hello, world!") var fname:string = "/users/holyfield/desktop/com.apple.iconcomposer.plist" var fm:nsfilemanager = nsfilemanager.defaultmanager() if(fm.fileexistsatpath(fname)){ println("file exists") if(fm.isreadablefileatpath(fname)){ println("file readable") var fd:nsdata? = nsdata(contentsoffile: fname) println(fd?.length) let pl = nsdictionary(contentsoffile: fname) println(pl?.count) println(pl?.allkeys) }else{ println("file not readable") } } else{ println("file not exists") } sample images: i have thank nate cook first quick response , solid answer. just case share answer post, title misleading. see nate's answer here: https://stackoverf...
Read more