Jump to content
Happy Holidays! Limited Staff Responses: 1/20 - 1/31 ×

How to deactivate pixel strobing in HTC Vive Pro?


M.F.
 Share

Recommended Posts

We are currently working with a few HTC Vive Pro Eye headsets for scientific research and have noticed that the pixels of the OLED panel strobe at 90Hz. We're aware this is possibly done to reduce motion blur, however it interferes with the intended use we have for them. Is it possible to turn off the pixel strobing in the HTC Vive Pro Eye? If so, how?

Link to comment
Share on other sites

@M.F. 90hz is the refresh rate of the panels themselves. You're likely seeing the image refresh on the panel which is an inherent property of OLEDs/LCDs. You can't select the refresh rate on that panel - it's fixed at 90hz. Vive Pro 2's display panels can display at either 90/120. Different types of display panels will have different characteristics when it comes to how the pixels get updated.

Link to comment
Share on other sites

Thanks for your reply. However, what I'm referring to is not caused by the refresh rate. Even when putting a static white background on the HMD, we see that the pixels are being strobbed (that is, the luminance is oscillating between white and black at 90 Hz rather than staying constant). Please see the image attached below as an example. You can see the brightness over time for both screens (1sec total duration) for a constant white background. This is not related to the image refreshing, as with a static white background the luminance would just stay constant. This is related instead to the image persistence being less that the duration of the frames of ~11ms. This is a common technique used to reduce motion blur in digital displays, particularly for gaming applications (as detailed here for example: https://blurbusters.com/faq/motion-blur-reduction and https://blurbusters.com/faq/oled-motion-blur/); however there is normally a setting for turning this off. We would like to know if such setting exist, or any other way of turning this feature off.

 

774689423_brightnessovertimeofHTCViveProforstaticwhitebackground.thumb.png.11ad335fea0639a00bd79f315cc44fdd.png

Link to comment
Share on other sites

Thanks for your reply. However, what I'm referring to is not caused by the refresh rate. Even when putting a static white background on the HMD, we see that the pixels are being strobbed (that is, the luminance is oscillating between white and black at 90 Hz rather than staying constant). Please see the image attached below as an example. You can see the brightness over time for both screens (1sec total duration) for a constant white background. This is not related to the image refreshing, as with a static white background the luminance would just stay constant. This is related instead to the image persistence being less that the duration of the frames of ~11ms. This is a common technique used to reduce motion blur in digital displays, particularly for gaming applications; however there is normally a setting for turning this off. We would like to know if such setting exist, or any other way of turning this feature off.

brightness over time of HTC Vive Pro for static white background.png

Link to comment
Share on other sites

My comments with attached images of the problem are not being published for some reason, so I'll copy only the text here...

Thanks for your reply. However, what I'm referring to is not caused by the refresh rate. Even when putting a static white background on the HMD, we see that the pixels are being strobbed (that is, the luminance is oscillating between white and black at 90 Hz rather than staying constant). Please see the image attached below as an example. You can see the brightness over time for both screens (1sec total duration) for a constant white background. This is not related to the image refreshing, as with a static white background the luminance would just stay constant. This is related instead to the image persistence being less that the duration of the frames of ~11ms. This is a common technique used to reduce motion blur in digital displays, particularly for gaming applications; however there is normally a setting for turning this off. We would like to know if such setting exist, or any other way of turning this feature off.

Link to comment
Share on other sites

@HackPerceptionany further insights on this?

I've been trying to attach a photo that shows the issue but my comments don't get published if I do. I've uploaded the image here: https://imgur.com/MYNA6lC. This graph shows the luminance of the display measured over one second for a static white background. As you can see, the pixels are being strobbed on an off, i.e., image persistence is less than the duration the frame. Strobbing is commonly used in gaming monitors and others to reduce motion blur (for example: https://blurbusters.com/faq/motion-blur-reduction and https://blurbusters.com/faq/oled-motion-blur/); however, there is normally an option to disable this. Any way to turn pixel strobbing off in the HTC Vive Pro Eye?

Thanks.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

×
×
  • Create New...