Thank you so much 🙂

one quick stupid question to run "temporal-correctness.ipynb" do i need to install psychopy ?

Hi, I've got a problem with displaying the data from pupil invisible in pupil player. I can see this notification but don't know how to fix this. Can someone help? These are the notifications that I got.

Hi. We are running a research lab using Pupil Lab and we ran into some problems that we were wondering if you could help. Problem 1 is our pupil player is not working. Only the black screen is showing up but not the gray screen to drag the files in to play the eye tracking data. Secondly, we recorded a file and pupil recording had a glitch so when we went to save the data, they are missing files in the recording folders. However , there are mp4 files for the eye and world videos and we would really like to salvage those video. How could we do that? Thanks so much!

Hello, we think our Pupil Core headset has a hardware issue. The right eye camera repeatedly disconnects. It has been going on for a few months and only impacts the right eye. We tried downloading the newest version of the software but still having issues. Do you have a way to send it in for repairs?

Hey There, I was trying to get the Gaze position data. could you please help me?

Hello Pupil Labs, I am looking to buy Pupil Core glasses but I would like to chat with an expert before that. I already sent an e-mail to the team, but I am posting on the discord chat because I only have until Thursday to decide on the Eye Tracker that I want. Could someone contact me? Thanks!

Hi, in comparing the fixations on surface csv files between subjects ran using an earlier version of Pupil Player and the newer version there is a difference. The older csv files list 1 fixation per row, listing the "id" column from 1 to however many fixation the participant had. The newer version lists fixation by some combination of fixation number and world frame and "fixation_id" can list multiple rows for the same fixation. Can you please explain this difference? In playing around with copies of newer subject files I was able to make the csv file look like the older format by removing the surface tracker plugin before running the fixation plugin, if that's of any help in describing what I'm talking about. Thank you for any guidance you can provide!

Hi there Pupil, I've got a question regarding video-encoding. I noticed the world videos are either mjpeg encoded or h263. Is the latter done via quicksync or do you use a different way of encoding? What kind of CPU is recommended if we decide to record in h263?

thanks, I appreciate your reply.

we will be doing recordings of 30-60 minutes per session, resulting in rather large files. Is the impact on performance big enough to justify this?

Would it be possible for Pupil to utilize Intel Quicksync via the ffmpeg encoding? Of course, this would require an supported cpu on the client side.

ok, great. Thanks for the help and the tips, much appreciated.

Hi, I am having some issues with the Pupil Core glasses saying the image coming from both eye cameras and the scene camera that says the image files are corrupted and is preventing me from recording. Do you know what may be causing this issue?

Quick question, can I run a 3m usb-c cable with a Pupil Core without issues? What's the transfer rate of the included cable?

ok, thanks!

Hi again, I have some questions about tracking fixations but to fully explain what my project intends to do, I'd have to share a video privately (it's a Youtube link). May I know who can I share the video with (and ask loads of further questions?)

Hi there, I was wondering if anyone can help me. I used MatLab to run an experiment with the Core. Now I have the raw data on graphs, the data is plotted x= time y=pupil dilation (mm). THe numbers are far too large for it to be in mms and i was wondering if there was a scaling factor issue here I was missing. My supervisor ran the code to develop the experiment on MatLab and he is not sure - I am hoping it's not an error with programming! Any help would be greatly appreciated 🙂

Hi, I have my gaze positions.csv data and would like to calculate the number of macrosaccades and microsaccades. I have been using the formula: angle = arccos[(xa * xb + ya * yb) / (√(xa2 + ya2) * √(xb2 + yb2))] to calculate the degree of differences by xyz positions. (e.g., x= gaze point x, y= gaze point y..etc). I got the degrees, but I wonder if this is the correct way to get microsaccades (less than 1 degree) and macrosaccades (more than 1 degree)?

Anyone with experience investigating saccades before?

Hello, I am interested in using Pupil Core for my Ph.D. project, and I plan to buy a compatible motherboard (plus, possibly, an extension cable) for my setup. Could you let me know what the recommended spec of the USB connection is? For example, what is the USB version of the USB cables included with the glasses?

Hello, is there any tutorial or guide on how to plot gaze and fixation positions in matlab? I tried to do it, but the data obtained is not correct. I mean I recorded myself looking in a rectangular way through a screen but when I plotted the norm_x y and z and the scanning pattern is not correct. All gazes are shown around one point in the coordinates

@papr forwarding a message from @user-183822 from the invisible channel:

hello everyone; for the data analysis of pupil data i tried running the code from 'https://pyplr.github.io/cvd_pupillometry/04d_analysis.html' but i am not able to run it.. i am getting an error in plr processing.. i dont know what to do.. i want to do the preprocessing of pupil diameter but i am not able to do it..' does anyone have any solution regarding this?

Hello! Is there anywhere we could manually change the video setting when exporting in Pupil Player? I set 640*480 with 120 fps under the sensor setting in the Pupil Capture, but the exported file has sampling rate of around 49 fps only. I am using both program with the latest version 3.5.1. Thank you! (p.s. could the eye video be exported alone?)

Hi @user-183822 👋 Have you tried this tutorial on working with pupil_positions data? https://github.com/pupil-labs/pupil-tutorials/blob/master/01_load_exported_data_and_visualize_pupillometry.ipynb Note the difference between diameter in the .csv export and diameter_3d. The former is in eye camera pixel coordinates, while the latter is in millimeters from the eye model. It may also be useful for you to know that we have a new plugin (not yet in the official release) for editing blinks to remove them from the export: https://gist.github.com/papr/b7e5f86bdad8eb9ee98723f8d5053f5f

Hello! My pupil core headset isn’t seeming to give me the option to record audio. When I navigate the menus, the only option is ‘sound only’ and with that on, we don’t get a sound output file

I would like to track my gaze on my computer screen in order to make clicking/navigating around easier e.g. when editing code in my IDE. Is this a use case pupilcore would do well in? Essentially, I’d like to be able to code on a 13-15 inch laptop screen as normal with the addition of eye tracking to help me navigate through code and the like.

hello guys, I have a question. do i need to use markers fir AOI to extract data (such as gaze point,fixation and etc) or can I record without them

Also, we still met some issues related with image input: we tried another two window devices, and both received the error message"video_capture.uvc_bacend: could not connect to device. No image will be supplied" Any troubleshooting idea? Thanks! p.s. we tried unplug/replug back, checked the usbk driver etc.

Hi @user-219de4 fps can fluctuate during recordings depending on CPU resources available. Details on Pupil Time in our documentation: https://docs.pupil-labs.com/core/terminology/#_2-pupil-time The cameras are free running and received frames are assigned a pupil-timestamp. There's a tutorial in frame identification here: https://github.com/pupil-labs/pupil-tutorials/blob/master/09_frame_identification.ipynb

I’m currently messing around with your camera intrinsic estimation plugin. Is there a way to have the undistorted image be the default recorded image? When I hit record, it records with the typical fisheye filter

Hello, colleagues.

I have two questions: 1) Can you tell me if you can give a different name to a record folder, instead of "000"? How can this be changed? Is it possible to achieve a synchronization point by naming a file according to the system time of the computer? How asynchronous would such a time be to the real situation? 2) Are there any other labels (qr) other than square? It's not very convenient to use for a laptop screen, since the lower labels don't fit. And an additional question: What is the best way to position the monitor screen recorded on the glasses and recorded from the computer, by capturing the image? Are the square marks positioned in the center?

Hello folks, I have a question about calibration. In my current setup, I place AprilTags at each corner of my monitor frame for surface tracking, but I would like to know whether it is possible to place them inside my monitor (I.e., my monitor will display them all the time). While this sounded easy implementation to me, I soon realized that during the calibration phase, Pupil Capture would place markers at each corner by making a temporal full-screen window. This makes my inside-monitor-AprilTags dissapear during the calibration, but does this affect accuracy of calibration/surface tracking? Or as long as calibration and surface tracking are successfully conducted independently, this will not affect the performance?

Hello, Is there any Unit that you use to represent Pupil Diameter?

@user-53a74a hi! Gaze estimation (eye to scene) and surface tracking (scene to surface) are two independent mappings. It is ok for the surface markers to disappear during the calibration. It will not affect performance. When displaying the apriltags make sure to include a sufficiently large white margin around them (required for detection)

In the 3d gaze export, how is the program calculating a position in space if there is only one eye present? Ultimately, we are interested in calculating the visual angle on certain eye movements and are wondering which export variable would help us make that calculation

Hi @papr , I was wondering what purpose does leaving a gap between the glasses and the user's forehead serve? We have been advised to do this in response to us wanting to improve our calibration method.

Is anyone else having a strange thing where pupil player just closes when you drag a folder on it to open it? It's happening on both 3.3.0 and 3.5.1. Not sure if the folder is too big (it's a 30-minute recording)

Hi, we run a test experiment with pupil invisible glasses. Now I am in another country, and I was trying to review the videos directly from pupil cloud, but when I started a preview on the site, it opened the window with a black screen, and the video didn't start. Any help?

yes, from different networks also. I am downloading the raw data and the download speed don't reach the 200 kb/s

Hi @papr , I saw in the chat that unit of the "gaze_point_3d_xyz" is measured in mm, is that also true for Norm X and Norm Y values of gaze position data?

Hello dear community, I noticed the last time I used the Pupil Labs Invisible glasses that they got pretty warm by the earpiece The usage time was about 14min. Is this normal that this gets so warm? Thanks for the help

Hello @papr I have some questions. I was wondering, does this eye tracker will still work with the computer camera(in-built), for example who doesn’t have the resources and money for getting the tracking hardware? Also, if yeah, does will be applicable to 5x12, 5x12 resolution, say a doctor has to be mark the co-ordinates of gazes in an MRI? Can you please help me in answering the questions? Thank you😊

Hi if we are mainly interested in measuring pupil size (alongside gaze position), do you think its best if we freeze the pye3d model? Thank you!

Also, is there a way to open files with pupil player from google drive?

Hi. Are there any documents about pupil core's measurement uncertainty of fixation durations and fixation numbers ?? I guess it's depending on confidence, but I'm wondering how to describe it in research articles.

Hello, I noticed this error occured. so I followed this (https://github.com/pupil-labs/pupil/issues/2088) and found out there was no uvc.dll. How can I get an uvc.dll? I already installed uvc 0.14. Any help is appreciated.

I'm using python 3.6.8

I installed pyuvc using pip install -r requirements.txt

When I first used DependenciesGui.exe, there was no turbojpeg.dll, but I installed it later.

Thanks to you, the problem has been solved. Thank you so much!

Hi we are presently testing and with one of our computers and we getting this notice on the world view that there is corrupt JPEG Data fortunately we have a spare device but how do we rectify this problem. Thanks Gary

Will do Neil we are currently testing at the moment but will reconnect the laptop at the end of testing and try again. Thanks.

Hi, How can I get the gaze position data? I did calibrate and export and I got all the data except the gaze position data. Thank you!

I'm looking at the pupil timestamp and the eye_id column (exported pupil_positions.xls file). I'm interested in knowing the pupil size of both eyes at the exact same timestamp (ie. what is the right eye doing while the left eye is fixating on something else - at the same time). How do I figure this out? I understand pupil time is arbitrary but it seems like the pair of identical timestamps are for one eye only.

Hi, can anyone help me? I'm trying to run pyuvc's example.py program but I'm having the following problem and I don't know how to solve it(I'm using linux mint) --> module 'uvc' has no attribute 'device_list'

@user-2e1368 In addition to the above, make sure that you do not have the Post-hoc calibration enabled in Pupil Player. You need to have "Gaze from Recording" (see Gaze data menu) enabled to export the gaze data that was estimated during the recording.

Hi! Colleagues, tell me about a recording crash. How can I revive the files?

hello, what is the difference between diameter and diameter_3d? and which one is better for analyzing?

Hello, I am researching gaze processing of pediatric patients using pupil core. In the case of a pupil core, is there a way to display the direction of movement (green point) of the eye, such as pupil capture, on a computer monitor?

Hello. I am studying the data in gaze_positions.csv and pubil_positions.csv.

I understand that the 3d gaze and normal_pos of the gaze_position are generated based on the data of the pupil_position, where I wonder what mathematical formula the normal_pos is obtained by.

Hi, I know this is a very basic question, but I'm new to using Pupil Core, just started to set it up to experiment and learn how it works. I'm using it on a MacbookAir, and I can't seam to get any videos appear in the pupil capture windows. World and Eye windows are both grey. Could you please help me find out what I am doing wrong? Thank you so much!

Hi, everyone. I am thinking about using Pupil Labs together with Microsoft Kinect in an environment. Will the IR sensors of these two devices interfere with one another? Does anyone have expereinece doing this? Thank you in advance

Hi, could you give me Pupil Core User Manual with PDF file? I cannot find it. But user manual is visible in the website.

Hello, looking at my pupil_positions.csv file, what is the difference between the diameter column (which gives me very high values ranging from 24-40) and the diameter_3d column (which gives me more realistic values for pupil diameter)? I thought both columns were in mm when looking at the pye3d method. Do I use the diameter_3d column if I am interested in pupil diameter? Thanks in advance!

Hi, I was using Pupil Player just fine a while ago but it suddenly stopped working -- crashed every time I tried to load a recording (the same recording).

I've tried restarting the laptop a few times and even reinstalled the pupil labs software but the problem persists. Any idea what's going on?

player - [ERROR] launchables.player: Process Player crashed with trace:
Traceback (most recent call last):
  File "launchables\player.py", line 624, in player
  File "plugin.py", line 409, in __init__
  File "plugin.py", line 441, in add
  File "observable.py", line 368, in __call__
  File "gaze_producer\gaze_from_offline_calibration.py", line 201, in init_ui
  File "gaze_producer\ui\select_and_refresh_menu.py", line 65, in render
  File "gaze_producer\ui\select_and_refresh_menu.py", line 83, in _render_item_selector_and_current_item
  File "gaze_producer\ui\select_and_refresh_menu.py", line 90, in _on_change_current_item
  File "gaze_producer\ui\storage_edit_menu.py", line 81, in render_item
  File "gaze_producer\ui\gaze_mapper_menu.py", line 66, in _render_custom_ui
  File "gaze_producer\ui\gaze_mapper_menu.py", line 114, in _create_mapping_range_selector
  File "gaze_producer\gaze_from_offline_calibration.py", line 224, in _index_range_as_str
  File "gaze_producer\gaze_from_offline_calibration.py", line 229, in _index_time_as_str
IndexError: index 5941 is out of bounds for axis 0 with size 5813

player - [INFO] launchables.player: Process shutting down.

Yes, I will. Thank you so much!

Hello Team, I have already used your "annotations.py" file to do remote annotations on my Eye data but is there any way to do so with Matlab? Any annotations file for Matlab?

Hello! My study design aims to utilize pupillab core with 120 fps. We currently met fps fluctuation during recording and can reach about 100 fps on average. Do you have any system recommendations about the optimal recording? Thank you.

Hello everyone, is there a sales team in China here? I am a hardware engineer at MiHoYo（the company that developed Genshin Impact）, and we hope to get a live demonstration and support from the sales team in Shanghai. is it possible?

hello, I am using pupil labs camera for eye tracking and would like to know if there's a way to synchronise the timestamps from the 2 videos (left eye and right eye). then my other issue is I would like to open the posthoc mp4 video in matlab to look at it frame by frame but I did not find a way. any solution? Thanks

Thanks for your answer. Is there any timestamps synchronisation option in the pupil capture software?

does this ffmpeg also works in windows?

I mean is there any way that the Pupil Capture could already synchronize the time of each frame between the 2 videos?

not necessarily. So what I wanted to do is to find the closest frames from each other in the 2 videos. If there's no possibility to do this through the pupil capture software then I will do it using the external timestamps of each videos. Thanks for your help!

Hi! I have a quick question regarding confidence. In pupil_positions.csv, there are two columns: “confidence” and “model_confidence.” Am I correct to assume that the “confidence” column applies to 2D pupil detection and “model_confidence” applies to 3D pupil detection? I am just trying to filter out low confidence values but I’m wondering if values under the “confidence” column are even relevant/accurate for 3D pupil data (such as the “diameter_3d” column). Thanks in advance!

Ok sounds good! Thank you for the quick reply

Hello, I have a pupil core. Can I use this code for pupil core? If so what do I need to change in the code? https://github.com/pupil-labs/realtime-matlab-experiment

Hello guys, I have a question. In surface fixation detection csv file exported. After doing my analysis, I found that my data is inconvenient to me. Then I realized that inside the csv file there are some fixations below 100 ms. When I checked the settings in pupil labs I saw that the minimum duration for fixation is set to 300 ms (which I should change). So why I have results for fixations below 300 ms if the minimum duration set is 300?

@papr You notified me that my right eye camera is not working. Is there a quick way to fix this? Since I have multiple measurements today?

All right, no worries. Thanks for the reply

Hi all, I have a question regarding eye-tracking data that I have collected with Pupil Core (glasses) and eye-tracking metrics (using Pupil Player). We downloaded the fixations.csv file and recorded the fixation when an AOI appeared and the fixation when the AOI disappeared. We see a big difference (43.8%) when we calculate the duration of the AOI being shown based on 1) timestamp of first and last fixation vs. 2) the sum of the duration of the fixations.

I am trying to better understand what this part (43.8%) is that is not a fixation. Therefore, my question is what this 43.8% could consist of? Is this, for example, missing data, gazes that are too short to count as a fixation (the shortest seems to be 80.69 ms; tbtw, is this used as the default threshold?), saccades, anything else?

Hi all,

I am completing my PhD at WSU. I am trying to integrate the Pupil Labs Core with an AR headset (HoloLens 2)

I can't seem to install the zmq dependency.... I have pip installed it and it shows up in the pip list, but when I run the program (pre-existing program) - I get an error - Module not found.

What are some possible causes?

I was thinking it could be that the system runs in a virtual environment, so installing to base Python will not work?

Sorry about the vague question... I am still learning how to program 🙂

Hi all, I have two types of Pupil Core. One has a pair of smaller eye cameras and it looks the same as the illustration in the documentation. The other one looks the same as the advertising pic. Do they work differently? Is there any difference in spec between them?

Hello, I am designing an experiment on Psychopy where I have integrated Pupil Labs eyetracker. I will going to present couple of pictures ( Stimulus) through Psychopy and wanted to monitor the reaction of our eyes when we look at the stimulus.

I have added a picture where I can get the Start and Ending time of the stimulus using the Psychopy generated CSV file but what I wanted to find the timestamps in the Pupil_position.csv file? Like , I wanted to know which part of the Pupil_position.csv will be in the first Stimulus start and End time . (Annotations for both start and end time)

It will be really helpful if you can let me know

I have used the ioHub integration

Thank you so much

hello

I need help with eporting the files I recorded

exporting*

on the website it says that the files are supposed to be saved in a folder named Exports

where is that folder exaclty?

Also when I open the player and type "e" I get the following message: " player - [INFO] launchables.player: Session setting are from a different version of this app. I will not use those."

can someone help please?

@wrp

@user-d72f39 within the recording folder will be a folder named exports (see screenshot for example)

is that from the player or the recorder please?

Hi @papr, I am collecting gaze position data for a lot of trials and creating surface tracking boundaries to let me know when/how many times the participant is not looking at the designated area. Is there a way to copy/standardize the location of the surface tracker boundary to all the other trials so that I do not have to create a surface for every trial?

I have another question regarding blink detection. Is there a way for data that is classified as a blink through blink detection to be excluded from the exported data files (specifically, gaze_positions_on_surface_...)?

Hi. Is the Pupil Mobile App now unavailable on Google Play? Anywhere can I download the apk?

hi I'm in Korea and I want to buy eye camera, but do I have any customs clearance issues?

Hi, anyone have tried gaming portable PCs like Ayaneo with Core for portability? https://www.ayaneo.com/

Hey, Please see the screenshot of the blinks file. I have 22 blinks and there is a start time, duration, and end time. my question is How can I adjust the start time that allows me to start from the first second instead of 2214.4019? Thank You!!!!!

Please see the screenshot of the info.player.json file. I changed the start time to 0 then I exported and still give me the same start time 2214.403, Thank you

Hello everyone!

I wanted to ask a couple of questions and get some advice from the community:

1.Calibration:The participants in an on-road research I'm doing will use the Tesla in both automatic and manual mode. The participant workload will be assessed using the eye metrics (eye blinks, fixation, total eyes off the road, etc). I've been calibrating the eye tracker with a single physical marker, however it appears that in this situation that isn't the most effective approach. The eye tracker will be worn by the participants while they are driving. What method would, in your opinion, be the most effective for calibrating the eye tracker to cover a greater area?

1. Exported Data Analysis:To understand the exported data, I need to know where to start reading. I want to check to see if my data is accurate, but I don't know where to begin. What do you guys suggest I should start (besides documentation) to understand my data a little bit better?

Thank you in advance for your patience and help.

Where might I find information on how gaze mapping is calculated. I can see lots of information about pye3d model and how it detects the eyeballs and pupils, however can't find any information about how this data is used to map a gaze into the world cam footage. Can anyone advise? Thanks!

Nothing too in-depth - it's for an MSc dissertation so more a checklist like "Pupil Labs utilise pye3d model for pupil detection, which works by.... " (which i've got plenty of info on) and likewise need to make note something like "For the gaze mapping, such and such is done".

3d

Thanks very much! Super helpful!

Is there a way to take the exported mp4 world videos and put them back into pupil player? We are trying to undistort the world video and then use that version to calibrate gaze positions

Hey! As of today I have a problem using Pupil Capture. After approx. 1 minute the main world view window gets unresponsive and closes itself. There is no error message in the Pupil Capture console. According to the Windows error logs there is a problem with the libusbk driver and on some occasions I get a blue screen with "MULTIPLE IRP COMPLETE REQUESTS" error message. The problem is independent from the host pc and Pupil Capture version. I hope there is someone who can give me some advice. Thanks!!

Hi, I am trying to exclude blink data from the gaze_on_surface_ and I am using the blinks.csv file to determine the start and stop time of a blink. It is listed as start_timestamp. Do you know if this lines up with the world_timestamp or the gaze_timestamp?

Hi team, we are doing post-hoc calibration using recordings from the Core. Is there a way to adjust any of the eye camera parameters to get better pupil detection? Currently, Pupil Capture is unable to detect the pupil for a majority of the recording, despite a pretty clear eye image.