πŸ‘ core


user-7ff310 02 July, 2023, 09:12:41

Hi, I have a problem with Pupil Core binocular headset and Pupil Capture on Macbook Pro M1 (macOS Ventura). It seems that only one eye camera can work at a time. When I start it, only one eye camera is active. If I try to enable the second eye camera, the first one gets disconnected. This started happening recently, and before that it worked fine. Any advice? Thanks!

user-f6ec36 03 July, 2023, 11:59:11

Hi

user-f6ec36 03 July, 2023, 12:01:17

We're planning to buy the neon machine from India. Just had a few queries about the availability of spares and whether the glasses truly work without the need for calibration. We've worked with Tobii glasses pro 2 before and we had problems with people who didn't have perfect vision where the gaze data would be off. Will the neon be able to work around this?

user-480f4c 03 July, 2023, 12:14:56

Hi @user-f6ec36 πŸ‘‹ . Thank you for your interest in Neon. I'm replying to your message in the πŸ‘“ neon channel.

user-f6ec36 03 July, 2023, 12:33:44

Thanks Nadia

user-f6ec36 03 July, 2023, 12:33:58

Did I connect with you on Linkedin 2 days ago

user-480f4c 03 July, 2023, 12:35:54

Yes! πŸ™‚

user-f6ec36 03 July, 2023, 12:38:27

Is this a public chat platform . Is it ok to ask queries

user-480f4c 03 July, 2023, 12:40:20

Yes! This is a public chat platform for questions related to our Pupil Coreeye tracking system. If you would like to ask more questions about Neon, please write them on this channel: πŸ‘“ neon

user-1aa180 03 July, 2023, 12:46:34

Hey everyone. During a few of my latest recording sessions, one or more camera feeds from our Pupil Core crashed, resulting in a corrupted video file. For instance, the recording folder contains a "world.mp4.writing" file instead of the standard "world.mp4" file, and Pupil Player isn't able to open the video. Anyone has encountered a similar issue before and could tell me if recovering the file, even partially, is possible?

nmt 03 July, 2023, 19:15:50

Hi @user-1aa180! Please share the player.log file immediately after trying to open the recording. Search on your machine, pupil_player_settings. Inside that folder is the log file.

user-ff1c74 04 July, 2023, 12:13:25

Hello everybody!

I'm starting to get into your pupil core glasses, doing the tutorial, using the sample_recording_v2, where I encountered something that's puzzling me: gaze_positions.csv is calculated from pupil_positions.csv, correct? but pupil_positions starts with time_stamp 329353.721339 and gaze_positions starts with time_stamp 1216.218711,347 how do these correlate? Or don't they, and I just misunderstood something?

user-9f0514 04 July, 2023, 12:17:55

@user-480f4c hello, I see that you have an add on for Epson BT300. But I have only BT35E, could you check if your add on also work for BT35E? thanks a lot

nmt 04 July, 2023, 16:00:34

Hi @user-9f0514 πŸ‘‹. Our Add-on is only compatible with the BT-300

user-7ff310 04 July, 2023, 12:33:52

Both eye cameras cannot work at the same time on Mac M1

user-8563d1 05 July, 2023, 12:00:58

Hi, I have a problem with the calibration. I am working in Linux and when using the pupil core capture software the calibration does not work as the marker remains all the time in the same position without moving. I obtain the following information in the log file:

user-8563d1 05 July, 2023, 12:01:11

2023-07-05 13:50:21,005 - world - [INFO] calibration_choreography.base_plugin: Starting Calibration 2023-07-05 13:50:21,107 - world - [DEBUG] calibration_choreography.screen_marker_plugin: Moving screen marker to site at (0.5, 0.5) 2023-07-05 13:52:22,286 - world - [INFO] calibration_choreography.base_plugin: Stopping Calibration 2023-07-05 13:52:22,313 - world - [DEBUG] calibration_choreography.base_plugin: Calibration already stopped. 2023-07-05 13:52:22,315 - world - [DEBUG] gaze_mapping.utils: Dismissing 2.13% pupil data due to confidence < 0.80 2023-07-05 13:52:22,315 - world - [ERROR] gaze_mapping.gazer_base: Calibration Failed! 2023-07-05 13:52:22,315 - world - [ERROR] gaze_mapping.gazer_base: Not sufficient reference data available.

user-cdcab0 05 July, 2023, 13:31:37

Hi, @user-8563d1 πŸ‘‹πŸ½ - how far are you positioned from the monitor when calibrating, and what is the resolution of your scene camera set to? The scene camera needs to have a clear view of the calibration marker during this process.

user-8563d1 05 July, 2023, 12:01:38

Any ideas on how to solve it? Thanks

user-8563d1 05 July, 2023, 13:58:20

The resolution is set to 1280,720 and the camera views the whole monitor that I have in front of me. The distance is just some centimeters from the monitor.

user-8563d1 05 July, 2023, 13:59:24

The calibration marker appears but it is always in red and it does not move

user-cdcab0 05 July, 2023, 14:01:39

To help narrow the problem, have you tried any of the other calibration methods?

user-8563d1 05 July, 2023, 14:04:40

No, I haven't. What I just realized is that it says in the main page that 2 markers detected, please remove all other markers. This appears as the marker does not move, I go back to the main page and that is the message that it appears in yellow

user-cdcab0 05 July, 2023, 14:09:48

Ah! The calibration routine is looking for exactly one marker. If there is something else in the view of the scene camera which has a similar enough appearance to the marker, it will need to be moved

user-8563d1 05 July, 2023, 14:04:59

Maybe this provides more info; if not, I will try other calibration methods

user-8563d1 05 July, 2023, 14:13:59

But I do not have any other marker.... 😦

user-cdcab0 05 July, 2023, 14:23:40

Do you think you could make a recording and share it with us? One option is to email it to data@pupil-labs.com

user-8563d1 05 July, 2023, 14:15:39

2023-07-05 16:15:17,332 - eye1 - [DEBUG] pye3d.eye_model.background_helper: Dropping task! args: ('add_observation', <pye3d.observation.Observation object at 0x7f7d30c70e80>), kwargs: {}

user-8563d1 05 July, 2023, 14:15:46

I get this in the log file

user-8563d1 05 July, 2023, 14:34:15

Ok, I send it there

user-b08155 05 July, 2023, 16:02:26

Hi all-I'm new to this system. Apologies if this is a common error, but I looked through the forums here and could not find anything on this. We recorded the a couple of minutes from one mac computer (osx 13.something I believe). Everything looked fine and I started to do some analyses. I then saved the whole folder for that day to google drive. Now on my work computer (osx 12.6.7), the eye movements show up in pupil player, but video does not. I also notice that none of the mp4 files in the folder play (world, eye0) in quicktime (Version 10.5 (1126.4.1)) on this computer. Any thoughts on what I can do to get the video back? These same videos do play when I load them in VLC, so I suspect it might be QuickTime that is causing a problem.

user-cdcab0 05 July, 2023, 22:51:20

That's interesting. Do you have any way to copy the files from the OSX 13 computer to the OSX 12 computer that doesn't involve uploading? E.g., external hard drive, flash drive, etc.

That would help us determine if it's some difference between the codecs on the different OSX versions or if it's something Google Drive is doing to your videos

user-b08155 06 July, 2023, 13:25:09

I'm now across the country from that computer. I think the best I can do would be to have a colleague try to send it over via dropbox or something. Interestingly, when I pulled over the 'world.mp4' file using a thumbdrive, I had no problem viewing it on this computer using quicktime. But I didn't pull the whole folder so I cannot try to analyze that data in Pupil Player.

nmt 06 July, 2023, 13:34:58

Hi @user-b08155. It sounds to me like something got lost during the upload to and download from Google Drive. What browser did you use?

user-b08155 06 July, 2023, 13:35:33

chrome

user-b08155 06 July, 2023, 13:35:58

actually chrome on the upload, firefox on the download.

user-052c0f 06 July, 2023, 16:10:48

Hi. We are completely new to pupil labs. We have successfully managed to collect data and have exported raw data files into excel. The next hurdle is data analysis. How does everyone typically analyse fixation data- we would like to compare fixation for two groups? We would also like to create two heatmaps comparing both groups fixation - does anyone know how best to do this? Thanks in advance!

user-6cf287 07 July, 2023, 08:45:04

Hi team, we would need a longer cable to connect to the eye tracker, around 3 meters.. what kind of cable settings would you recommend to avoid any further latency? thanks

nmt 07 July, 2023, 10:07:28

Greetings, @user-6cf287! USB3-Hubs have been used in the past as repeaters to achieve longer cable lengths. Just be sure to appropriately manage the cable to avoid the participant gettign tangled!

user-79be36 07 July, 2023, 17:33:09

I am having an issue where the eye camera and scene camera are throttling their sample rates to match the display refresh rate of the monitor the eye windows are open on. If I move either eye window to the 120 Hz display, the rate jumps to 120 Hz. It then then falls back down to 30 Hz when moved to the 30 Hz display, while still running. We have confirmed that the data sample rate is matching. Is this how the system is designed? Can we disable this coupling?

user-1c31f4 09 July, 2023, 19:28:55

Hey folks. I've been having issues with the 3D eye model in pupil capture. I can't for the life of me get it to consistently work. The best luck I've had is spamming the 'reset 3d model' button until the 'long term model outline' looks appropriate, and then freezing the model.

user-1c31f4 09 July, 2023, 19:29:12

Here is a video of what I am experiencing.

user-1c31f4 09 July, 2023, 19:30:40

Can anybody from Pupil offer me some advice? I never used to have this issue.

nmt 11 July, 2023, 10:52:47

Hi @user-1c31f4. In order to fit the model, you need to look around to sample sufficient gaze angles. It looks like your resetting the model manually before it's had time to fit. Please try again without resetting the model.

user-c10c09 11 July, 2023, 08:51:00

Morning...my Neon Companion app is crashing / won't open. I need to back-up yesterday's data and be start collecting new data imminently. Any ideas / options? Thanks. πŸ‘“ neon

user-c10c09 11 July, 2023, 08:51:59

I should add I've restarted the phone, had it plugged in to my PC, plugged in to the tracker, and not plugged in to anything - isn't working on any option...

user-d407c1 11 July, 2023, 09:07:29

Hi @user-c10c09 ! Sorry to hear you are experiencing this issues, do you see any error message? Are you using the latest version of the app? Could you hold your finger over the app icon, go to App Info > Storage > Clear Storage or Data depending on which Companion Device do you have?

After that you would have to log in into the app again, go to Settings > Data Usage > Import recordings (within the app) to restore your recordings.

user-c10c09 11 July, 2023, 09:09:49

HI Miguel. I've just managed to open the app it by disabling wifi. No error message - just begins to open then closes again. It was happening yesterday too. Concerned that clearing storage will mean losing my data... Plan for now is to get everything onto Pupil Cloud, back it up, then clear storage and check for updates. Sound fair?

user-d407c1 11 July, 2023, 09:13:14

That sounds fair! Let us know if you struggle at any point.

Side note, clearing the data on the app info's view should not end up in loosing your data but rather that you would have to reimport previous recordings. That said, yours is a perfect valid and safe approach, mine was more in case you could not open the app.

user-c10c09 11 July, 2023, 09:14:11

That's great - thanks so much

user-6bde19 12 July, 2023, 05:25:31

i am using pupil core in my research work.

user-6bde19 12 July, 2023, 05:28:44

i am trying to compare driving data between beginner and a pro driver. I have taken driving datas with pro diver and a beginner driver. Can you please suggest me how can I proceed forward . What can be the next step to do in my project. Please help .

nmt 12 July, 2023, 15:37:27

Hi @user-6bde19 πŸ‘‹. That sounds like quite a rich dataset you have. Comparing novice vs pro drivers is definitely an area of interest. Why not check out this article for some inspiration: https://pupil-labs.com/blog/community/motorcycle-rider-eye-tracking/ ?

user-c10c09 12 July, 2023, 09:24:56

Hi - need to test you now... I'm running a study using Neons and I'm getting an intermittent sensor fault. With some participants it happens in around 30-60 seconds of use, every time I start recording, and for some participants I don't get a fault at all. It's the red light flashing in front of the left eye and the phone vibrating away that there's a fault, so easily noticed. Any ideas on how to resolve? It'll be frequent with one participant and not at all with the next... Thanks,

user-a2a5d4 12 July, 2023, 10:24:25

Heat maps

user-66f7c1 12 July, 2023, 13:41:28

Hi our cable has broken- is it possible to get a new one. I mean the one, connecting the Eye-Tracker withe the USB Cable

user-480f4c 12 July, 2023, 14:28:27

Hi @user-66f7c1 πŸ‘‹ ! Please reach out to info@pupil-labs.com in this regard

nmt 12 July, 2023, 15:29:59

Hi need to test you now I m running a

user-80c70d 13 July, 2023, 11:50:52

Hi, we were thinking of ordering a new eye tracker and were wondering if you could provide us with details regarding the shipping duration?

user-d407c1 13 July, 2023, 11:58:10

Hi @user-80c70d πŸ‘‹ ! Nice to hear that you are considering our products, could you contact [email removed] indicating which product you are interested and to which country would you like it to be shipped? The sales team would be able then to respond to these queries.

user-80c70d 13 July, 2023, 12:00:01

may I ask an additional question, are your new eye trackers able to record eye movement outside in the sunlight?

user-d407c1 13 July, 2023, 12:02:29

Yes! they can ! β˜€οΈ 😎 You can see some examples of using Neon outdoors at https://pupil-labs.com/products/neon

user-80c70d 13 July, 2023, 12:03:32

thank you a lot for the information!

user-355442 13 July, 2023, 23:30:42

[email removed] (Pupil Labs), is there a document that explains how the pupil diameters were derived and how they can be converted to more realistic dimensions?

nmt 14 July, 2023, 07:41:56

@user-355442, you can read about that here: https://pupil-labs.com/blog/research-digest/better-pupillometry-corneal-refraction/ (link to publication in the article). May I ask what you mean by converting to realistic dimensions? Is diameter reported in mm not sufficient?

user-74c615 14 July, 2023, 14:01:11

hi everyone! Could someone kindly tell me whether pupil core could connect to cell phones instead of to the computer like pupil invisible? Our experiment requires subjects to wear the eye tracker while walking around. Can core support this?

user-480f4c 14 July, 2023, 14:06:28

Hi @user-74c615πŸ‘‹ ! Pupil Core cannot connect to cell phones. Please have a look here for another alternativehttps://discord.com/channels/285728493612957698/285728493612957698/1042712204140630117

user-74c615 14 July, 2023, 14:56:18

ok!got it!thank you!

user-b5e9a2 14 July, 2023, 19:08:53

Hi everyone, I am using the pupil core glasses with a double monitor display and the pupil cameras are consistently losing track of the pupils, I'm hoping someone here can help. The cause of this issue is unclear, so I'll be pretty thorough in my explanation of all of the things that are going on. Basically, whenever the pupil cameras lose sight of the pupils, the eye tracking stops and the cameras are unable to find the pupil again (even when it is fully in view) until there is movement of the eye, or it's chance when it reconnects. The issue seems to be fixed when changing from 'extending' to 'duplicating' the screen display designated as the monitor in the pupil computer app. The issue also does not appear with some people whereas it consistently happens with others. Thanks in advance! Update: We may have solved the issue, changing the maximum 2D pupil size setting to ~150 pixels in the post-hoc plugin settings prevents the loss of tracking. This also fixes the 3D measurements since the 3D measurement seems to be built off of the 2D measurement.

user-7ff74e 14 July, 2023, 19:53:01

Hello, good morning/good afternoon/good evening, I'm having some problems with my equipment, it has a failure in the device descriptor request and then windows shuts down the usb, someone know what could I do?

user-48526c 17 July, 2023, 06:47:27

Hello Meon Support Team...After setting up the device and successfully completing the first recording, the device is no longer being recognized on the Neon app. The screen prompt to plug-in remains even after I have plugged the device using the USB cables that were provided by you. I have tried rebooting the phone, reinstalling the app, but the problem persists. I would much appreciate it if you can reach out to me as soon as possible.

user-480f4c 17 July, 2023, 06:50:02

Hi @user-48526c πŸ‘‹ ! Thanks for reaching out and welcome to the community πŸ™‚ Let's move this conversation to the πŸ‘“ neon channel! I replied to your message here: https://discord.com/channels/285728493612957698/1047111711230009405/1130391388870152222

user-19fd19 17 July, 2023, 09:40:29

Hello! It's my first time using the Core and I can't get it to work. For now I'm still just trying to follow the tutorial on https://docs.pupil-labs.com/core/, but the PupilCapture software is not showing camera (or any kind of) input.

My steps: 1. I plug in the device 2. I open PupilCapture 3. I get the errors from the attached screenshot

After a while, the error messages disappear. Then I have a grey screen and a repeatedly appearing message that some devices have been found, but nothing else happens (I've also attached a video that shows this).


I work on MacOS Ventura 13.4.1 with an Intel MacBook. The USB port that I am using is working as expected with other devices (i.e. keyboard, mouse).


Any help would be greatly appreciated!

Chat image

user-cdcab0 17 July, 2023, 09:43:54

Hello, @user-19fd19! On Mac, you'll need to run Pupil Capture with admin rights. There's information and detailed instructions here: https://docs.pupil-labs.com/core/software/pupil-capture/#macos-12-monterey-and-newer

user-19fd19 17 July, 2023, 09:41:19

Sorry, I forgot the video that I promised. Here it is πŸ™‚

user-75df7c 19 July, 2023, 08:04:21

Hi! I have a recording I made with the world camera at 1024x768 but when I try to open it in Pupil Player it says "no camera intrinsics for camera world at resolution (1280, 720)" so the world camera is all gray. The world.intrinsics file also correctly says it was 1024. Any idea where it's getting 1280 from or how I can change it? Thanks!

user-75df7c 20 July, 2023, 10:03:57

hi, can anyone help with this? :) thanks

user-6eeda2 19 July, 2023, 09:59:26

Hi! I am using pyuvc to read the eye cameras and the world camera of the Pupil Labs Core glasses. With the eye camera I don't have any problem to access the images but with the world camera I have problems. To access the images from the world camera I don't always get images and if I move the headset cable that is connected to the computer I get TimeoutErrors and I can't reconnect to the camera. why does this happen? it's strange because with the eye cameras I don't have any problems when I move the cable.

user-3a7381 19 July, 2023, 11:06:25

Idk what happened but now I cannot access to the world camera at any time😒. How can I fix the problem?

user-d407c1 20 July, 2023, 06:49:09

Hi @user-6eeda2 @user-3a7381 πŸ‘‹ ! The issue you're experiencing with the world camera of the Pupil Core could be related to the cable connection or the camera itself. Here are a few possible reasons for the problem:

  1. Cable Connection or Quality: The cable connecting to the computer may be loose or damaged. If using a 3rd party cable, it may be of lower quality or not designed to handle the data transfer required by the world camera. This could lead to intermittent connectivity issues. Try using a different cable or a higher-quality cable to see if it resolves the problem. The connector of the world camera to the cable tree might be damaged, is there any visible damage?

  2. Camera Hardware: There could be an issue with the world camera hardware itself. It's possible that the camera is faulty or damaged, which is causing the intermittent image access and TimeoutErrors.

In any case, please contact us at info@pupil-labs.com for further debugging steps.

user-3a7381 19 July, 2023, 11:07:26

I tried with windows and linux

user-75df7c 20 July, 2023, 10:05:52

sure

user-59ce16 20 July, 2023, 11:45:52

Hello! Regarding the Surface Tracker, is there any integration for LSL (Lab Streaming Layer)? In essence, does data from surface detection get streamed via LSL plugin or do I have to make a new plugin? If so, any help / insight to the matter would be really helpful.

user-cdcab0 24 July, 2023, 06:39:58

Hi, @user-59ce16 - the LSL relay doesn't support that directly, so yes, a new or modified plugin would be required. You might be able to accomplish what you need by making a Capture recording while simultaneously streaming to LSL and then cross-referencing the surface gaze data posthoc.

user-20af7e 21 July, 2023, 22:27:23

Hi! I'm trying to open my recordings in the pupil player on my mac. For some reason pupil player closes after trying to load the file. I tried re-installing it but that did not fix the problem.

user-cdcab0 24 July, 2023, 06:28:38

Hi, @user-20af7e - that's odd. What operating system are you using? There should be some output when you run it, and that usually has error messages and other clues about what may have caused any problems. Can you share that with us?

user-a2c3c8 23 July, 2023, 15:36:59

Hi! I am trying to integrate my own camera with Pupil Lab's code. I found the original camera parameters set in the 'camera_models.py' file and added my own camera name and parameters. Then, I made modifications to the 'default_capture_settings' and other parameters in 'eye.py'. However, I found that it cannot run, and it still connects to my Pupil Core for operation. What should I do next? Please help me!

user-cdcab0 24 July, 2023, 06:30:57

Hi, @user-a2c3c8 - what kind of cameras are you using? Most off-the-shelf cameras can be used by simply enabling the "Manual Camera Selection" option. It's in the Video Source settings, which you can find by clicking the camera icon on the right side of the Pupil Capture windows. With that enabled, you can change cameras by using the drop down.

user-fa2527 23 July, 2023, 20:54:56

Pupil Capture no longer recognizes my cameras. It says they are disconnected when they're not. Smetimes after 5+ minutes they suddenly come on line. Using MacOS Big Sur on a macbook. what the heck?

user-fa2527 23 July, 2023, 20:57:25

FYI I'm conencting directly to a thunderbolt port. Pupil Capture used to recognize the cameras instantly.

user-fa2527 23 July, 2023, 21:41:30

I opened Pupil Capture from the Applications folder and pasted the suggested command into Terminal

user-cdcab0 24 July, 2023, 06:33:31

Hi, @user-fa2527 - that does sound problematic. When you refer to the "suggested command", do you mean the sudo ... command that's used to run Pupil Capture with administrative rights? or something else?

user-fa2527 24 July, 2023, 12:46:10

@user-cdcab0 yes the command to run with administrative rights - thank you for responding

user-cdcab0 24 July, 2023, 12:57:03

When you say they sometimes come online after 5+ minutes, do you have the software running that entire time? Or you just have your headset plugged in and, after a few minutes, try launching the software and it works?

user-fa2527 24 July, 2023, 13:36:31

@user-cdcab0 I have the software running. Pupil Capture says USB not connected - my macbook does not have a usb port so I use the thunderbolt port, which used to work

user-5adff6 24 July, 2023, 14:03:48

Hello,

I am doing a psychophysics experiment using MATLAB and I want to record eye tracking with Pupil Core. I want to send triggers from MATLAB to the Pupil Core with the timestamps of the moments where certain stimuli are presented. I read a couple of discussions on this topic online but as a newbie, I got really confused.

The MATLAB computer that I am using does not have Internet access right now, but the Pupil Core computer does. My first question is do I really have to have Internet access to both computers to send event triggers? Is there a way that I can manage this via a LAN cable between the two computers?

If yes, can you walk me through the steps I need to do for this? (I basically want to be able to successfully use β€œsend_annotations.m” function in my setup)

I would much appreciate any help!! πŸ™‚

user-cdcab0 24 July, 2023, 21:54:47

Neither computer needs internet access for that to work, but you do need network access between them (e.g., on the same LAN or WiFi). If you look at pupil_remote_control.m in the matlab folder of the pupil-helpers repo, you'll see a line that defines an enpoint:

endpoint =  'tcp://127.0.0.1:50020';

That 127.0.0.1 is an IP address - in this case it refers to the same machine running the matlab code. To connect to a different machine, you'd replace 127.0.0.1 with the IP address of the computer running Pupil Capture. As long as the computers can talk to each other over the network (even without internet access), it will work.

user-e52094 24 July, 2023, 18:04:27

When I download videos from pupil labs cloud workspace, the download folders do not contain the following files: gaze ps1.raw, gaze ps1.tim, PI world v1 ps1time, PI world v1 ps1.mp4, extimu ps1.raw, extimu ps1.time, and info.json. I am using pupil invisible glasses.

However, these files were in my downloads from pupil labs cloud in April. Can any help me figure out how to download these files? I need them to run analysis in iMotions.

user-3874a1 24 July, 2023, 22:02:50

Hi there, I noticed in the gaze_position.csv file that gaze_normal_0 has repeated data for two rows. The same is true for gaze_normal_1 but the repetitions are just offset by one from the other eye. Is this expected? If so, why? Thank you very much in advance for your help!

Chat image

user-cdcab0 25 July, 2023, 12:11:45

This is expected. If you look at the base_data column, you'll see two values for each row, one with a -0 and one with a -1 at the end. If you compare these values across rows, you'll see that they repeat in pairs too. In fact, you'll see that when the -0 values in base_data repeat, the values for eye 0 repeat, and the same for -1 with eye 1 values.

The computer can only capture one frame from one camera at a time, so they will never be exactly in sync. 3D gaze estimation, however, is performed on every frame from either camera, so the duplicates are expected.

Put another way,

  • When camera 0 captures a new frame, gaze is computed using the new frame for 0 and the most recent frame for 1
  • When camera 1 captures a new frame, gaze is computed using the new frame for 1 and the most recent frame for 0

You can see here that the frame from camera 0 is used twice - once when it was new and again when camera 1 captured its new frame.

user-ab9d17 25 July, 2023, 12:29:35

Hello, I was struggling (for a while) to get my pupil camera (Microsoft HD-6000) to work with Capture. After following "https://github.com/pupil-labs/pyuvc/blob/master/WINDOWS_USER.md", I was able to see the camera in the manual drop down list in Capture, but I kept getting the error "the selected camera is already in use or blocked". I ended up figuring out that for some reason my mouse (Logitech MX Master) was interfering with the connection. With the mouse dongle plugged in, only certain ports would detect the camera. With the mouse dongle unplugged, the camera is detected every time and on any port. Once Capture has connected to the camera, I can re-insert my dongle and use as normal. Just wanted to share my findings to help anyone else having issue.

user-74c615 27 July, 2023, 07:48:32

And could core use pupil cloud to save data?

user-d407c1 27 July, 2023, 08:06:05

No, Pupil Cloud is exclusive to Pupil Invisible and Neon. Perhaps you would like to request a demo and Q&A session with one of our product specialists so that they can solve all your questions? if so you can write to info@pupil-labs.com to request it

nmt 27 July, 2023, 17:53:44

Hey @user-74c615! If I may ask, what's your intended goal with eye tracking? Or another way, what's your research question? That might help us in making a concrete product recommendation

user-6586ca 27 July, 2023, 16:06:20

Hi Pupil Labs team, I have a question about the eye videos recording.

For the participants' anonymity, we are required to not record the eye videos during our experiment. I found that the Pupil Capture software offers this possibility. However, I would like to enquire about the quality of the data in this case. Does the disabled eye video recording impact the tracking signal or the subsequent analysis in the Pupil Player ? Thank you for your help ! πŸ™‚

nmt 27 July, 2023, 18:02:59

Hi @user-6586ca! Hmm. That's an interesting question πŸ€”. It is technically possible to record gaze data in its raw form, i.e. the raw coordinates, without the need to also record the eye videos. Conceptually, not recording the eye videos should have no impact on the quality of your data. However, you won't be able to do any post-hoc processing. But before we get into the details, it might be best if you describe your experimental setup and exactly what kind of data and outcome metrics you need!

user-888ccf 27 July, 2023, 17:12:17

Hello I would like to ask whether setting ROI in pupil labs eye cameras has any impact on eye tracking quality instead of leaving the borders in the corner of the window.

mpk 27 July, 2023, 17:53:05

@user-888ccf yes, it does especially with mascara, I would recommend setting an ROI that covers the range of motion of the pupil..

user-39737f 28 July, 2023, 11:55:58

Where I can find to download pupil_capture.exe ?

user-d407c1 28 July, 2023, 11:59:01

Hi @user-39737f ! In this page, click at Download Pupil Core Software https://docs.pupil-labs.com/core/

End of July archive