Detect pupil from the picture of the eye











up vote
-1
down vote

favorite












I have this video. I want to detect and draw a circle around the pupil.
This is a frame from that video.
Pupil frame



I want to analyze the change in size of the pupil after the eye is illuminated.



Things I tried.

- Rotate the image to make it upright.

- Using Haar Cascade to detect the eye in an image.

- Detecting the Iris using hough circles.

- Isolating the iris by cropping the image.

- Binarized the image with various thresholds to find inner circle(Pupil)

- Did contour detection on each output of diffent binarizations.



This approach works on some samples but fails on most others and gives a lot of false positives.



Please suggest some alternative approach.






python opencv machine-learning computer-vision object-detection







share|improve this question


























    up vote
    -1
    down vote

    favorite












    I have this video. I want to detect and draw a circle around the pupil.
    This is a frame from that video.
    Pupil frame



    I want to analyze the change in size of the pupil after the eye is illuminated.



    Things I tried.

    - Rotate the image to make it upright.

    - Using Haar Cascade to detect the eye in an image.

    - Detecting the Iris using hough circles.

    - Isolating the iris by cropping the image.

    - Binarized the image with various thresholds to find inner circle(Pupil)

    - Did contour detection on each output of diffent binarizations.



    This approach works on some samples but fails on most others and gives a lot of false positives.



    Please suggest some alternative approach.






    python opencv machine-learning computer-vision object-detection







    share|improve this question
























      up vote
      -1
      down vote

      favorite









      up vote
      -1
      down vote

      favorite











      I have this video. I want to detect and draw a circle around the pupil.
      This is a frame from that video.
      Pupil frame



      I want to analyze the change in size of the pupil after the eye is illuminated.



      Things I tried.

      - Rotate the image to make it upright.

      - Using Haar Cascade to detect the eye in an image.

      - Detecting the Iris using hough circles.

      - Isolating the iris by cropping the image.

      - Binarized the image with various thresholds to find inner circle(Pupil)

      - Did contour detection on each output of diffent binarizations.



      This approach works on some samples but fails on most others and gives a lot of false positives.



      Please suggest some alternative approach.






      python opencv machine-learning computer-vision object-detection







      share|improve this question













      I have this video. I want to detect and draw a circle around the pupil.
      This is a frame from that video.
      Pupil frame



      I want to analyze the change in size of the pupil after the eye is illuminated.



      Things I tried.

      - Rotate the image to make it upright.

      - Using Haar Cascade to detect the eye in an image.

      - Detecting the Iris using hough circles.

      - Isolating the iris by cropping the image.

      - Binarized the image with various thresholds to find inner circle(Pupil)

      - Did contour detection on each output of diffent binarizations.



      This approach works on some samples but fails on most others and gives a lot of false positives.



      Please suggest some alternative approach.






      python opencv machine-learning computer-vision object-detection




      python opencv machine-learning computer-vision object-detection






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 7 at 10:22









      Backalla

      598




      598





























          active

          oldest

          votes











          Your Answer






          StackExchange.ifUsing("editor", function () {
          StackExchange.using("externalEditor", function () {
          StackExchange.using("snippets", function () {
          StackExchange.snippets.init();
          });
          });
          }, "code-snippets");

          StackExchange.ready(function() {
          var channelOptions = {
          tags: "".split(" "),
          id: "1"
          };
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function() {
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled) {
          StackExchange.using("snippets", function() {
          createEditor();
          });
          }
          else {
          createEditor();
          }
          });

          function createEditor() {
          StackExchange.prepareEditor({
          heartbeatType: 'answer',
          convertImagesToLinks: true,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: 10,
          bindNavPrevention: true,
          postfix: "",
          imageUploader: {
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          },
          onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          });


          }
          });














           

          draft saved


          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53187529%2fdetect-pupil-from-the-picture-of-the-eye%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown






























          active

          oldest

          votes













          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes
















           

          draft saved


          draft discarded



















































           


          draft saved


          draft discarded














          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53187529%2fdetect-pupil-from-the-picture-of-the-eye%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown







          -

          這個網誌中的熱門文章

          Xamarin.form Move up view when keyboard appear

          圖片
          .everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ height:90px;width:728px;box-sizing:border-box; } 0 I'm trying to build a Chat app UI, the idea of the Layout was pretty simple: When the input bar is focused, keyboard show up and "push" up the chat bar, as it's a grid, the ListView will resize to fit the screen: I update the input bar's margin to "push" it up: NSValue result = (NSValue)args.Notification.UserInfo.ObjectForKey(new NSString(UIKeyboard.FrameEndUserInfoKey)); CGSize keyboardSize = result.RectangleFValue.Size; if (Element != null){ Element.Margin = new Thickness(0, 0, 0,keyboardSize.Height); //push the entry up to keyboard height when keyboard is activated } And this is ...
          閱讀完整內容

          Post-Redirect-Get with Spring WebFlux and Thymeleaf

          圖片
          .everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ height:90px;width:728px;box-sizing:border-box; } 2 Can someone explain to me how to implement the post-redirect-get pattern in Spring WebFlux and Thymeleaf? What subscribes on the database save method? @GetMapping("/register") public String showRegisterForm(Model model) { model.addAttribute("user", new User()); return "register"; } @PostMapping public String processRegisterForm(@Valid User user, BindingResult bindingResult) { if (bindingResult.hasErrors()) { return "register"; } else { userRepository.save(user); //what subscribes on this? //how to redirect on e.g. "/login"? ...
          閱讀完整內容

          Anylogic : not able to use stopDelay()

          圖片
          -2 I am building a railway station model. I want a train to depart when I click a button. I want to call stopDelay() for that but I am not sure how to do that and from which place. anylogic share | improve this question asked Nov 23 '18 at 10:12 Anupam Singh Anupam Singh 1 Hi Anupam, welcome to SOF. Please check how to ask good questions, see link below. Your question is...
          閱讀完整內容