Chromatic Aberration Issues — Oculus
New to the forums? Click here to read the "How To" Guide.

Developer? Click here to go to the Developer Forums.

Chromatic Aberration Issues

thekiwimaddogthekiwimaddog Posts: 33
edited January 2015 in Support
Hi everyone! I've received my DK2 today and have been playing around in both the Oculus World Demo and the Demo Scene and I'm noticing a large amount of chromatic aberration towards the edges of the screen. I've been playing around with the settings (IPD, Eye relief, Eye Cups) and nothing seems to help with this issue. In fact I can't even see a noticeable change in the chromatic aberration correction when viewing it using the monitor for reference and picking what I think are extreme values. They all just seem to produce the same correction effect.

Should the IPD, Eye Relief and Cup type change the chromatic aberration correction effect? If so can someone tell me the extreme values that I can choose for a comparison as I'm wondering if this is just a bug and my settings are not being applied to the distortion correctly.

Does anyone else see this chromatic aberration?

Thanks Everyone!
David
«1345678

Comments

  • mrgreen72mrgreen72 Posts: 683
    Art3mis
    Yup. Same here. I immediately noticed it and it never bothered me on DK1.
  • adburnsadburns Posts: 4
    Yep, same problem.
  • cyberealitycybereality Posts: 26,156 Oculus Staff
    Can you guys take a screenshot and post it?

    I'd be interested to know if its happening on the screen or the Rift only.
    AMD Ryzen 7 1800X | MSI X370 Titanium | G.Skill 16GB DDR4 3200 | EVGA SuperNOVA 1000 | Corsair Hydro H110i
    Gigabyte RX Vega 64 x2 | Samsung 960 Evo M.2 500GB | Seagate FireCuda SSHD 2TB | Phanteks ENTHOO EVOLV
  • brantlewbrantlew Posts: 540 Oculus Staff
    Also, what is your IPD? Chromatic aberration is optimized currently for 63.5 IPD and eye widths far outside of this value may experience more chroma. Try this. Look through one eye and shift the headset a little left and right and see if you can find a sweet spot. Off-axis chroma is something we need to address in future SDK revisions because the DK2 lens produce so much aberration.
  • mrgreen72mrgreen72 Posts: 683
    Art3mis
    Can you guys take a screenshot and post it?

    I'd be interested to know if its happening on the screen or the Rift only.

    http://i.imgur.com/RqZdtzy.png

    My IPD is 66.0mm if the measurement tool is to be believed. I even got a 66.6 measure ( :twisted: ). I consistently got slightly lower results with DK1.
  • FredrumFredrum Posts: 211
    Nexus 6
    edited July 2014
    I also notice some pretty strong chromatic aberration. My ipd is 62mm.
    The eye relief screws are close to 'half way'.
    Even fairly close to the centre of the screen there is what looks to me like cr-ab.
    This is in the Oculus Config Util demo scene and the Oculus world warning sign. (I have some problems, posted elsewhere)

    Not sure if there's any setting I am missing or something I can tweak?

    EDIT: Here are some pictures.

    IPhone photo through DK2 lens:
    http://imgur.com/w7Wa6g4

    Same scene and session screengrab:
    http://imgur.com/aJTmUER


    DK2
    Win 8
    gtx 660, i7


    Cheers
    Fred
  • densohaxdensohax Posts: 289
    Brain Burst
    My IPD is 59mm and I see the chromatic aberration too. One lens is blurry as well..

    Sucks that the IPD is still not physically adjustable.
  • drashdrash Posts: 2,846
    Neo
    The more I play with the DK2, the more I think that the red channel is being shifted to the left and down a little bit, regardless of whether it's in the center of the screen or not. It kind of hit me when I was looking at a small yellow ball straight ahead in my view and there's a distinct set of red subpixels to the lower left of it. Then I realized it's like that on everything that has red in it.

    Anyone else noticing this? My IPD is 67mm if that makes any difference.
  • robsclonerobsclone Posts: 6
    NerveGear
    I might be having a similar issue. Much like the red is 'off' like a previous post said. Also, the colors are completely off for me inside of the Rift, but not on the screen:

    Demo Scene
    In Rift: http://i.imgur.com/vuI26T7.jpg

    On Desktop: http://i.imgur.com/h6Y5g9x.jpg

    Tuscany has all of the colors really off, also. Do you guys have that, too?
  • FredrumFredrum Posts: 211
    Nexus 6
    I am getting strange green colorization of the whole screen happening now and then.
    http://imgur.com/TJrgBFz

    Not the same as the chromatic aberration though.
  • thekiwimaddogthekiwimaddog Posts: 33
    edited July 2014
    brantlew wrote:
    Also, what is your IPD? Chromatic aberration is optimized currently for 63.5 IPD and eye widths far outside of this value may experience more chroma. Try this. Look through one eye and shift the headset a little left and right and see if you can find a sweet spot. Off-axis chroma is something we need to address in future SDK revisions because the DK2 lens produce so much aberration.

    MY IPD is 64.1 according to the Measuring tool.
    I've tried closing my eye as you instructed and am able to find a sweet spot for the focusing but the chromatic aberration isn't effected much. As I move around the edges blur away so that masks the Chroma issues but it's still there. Plus the Chroma is still as pronounced on the Vertical Axis too which I assume wouldn't be as effected by IPD values. This is why I thought it might be an Eye relief value not being applied or something. Does the Chroma distortion provided by the game/app take into consideration the User profile values? Or is the Chroma distortion a fixed distortion effect?

    In general I can't see any aspect of change in the distortion (chroma and barrel) when I modify either the Eye Relief or Eye Cups settings. I can see the IPD and Player Height moving the camera position but the IPD is not changing the Chroma Distortion only the Barrel Distortion.

    As to be expected the chroma is most apparent towards the edges and when a white object is involved. For example the paper on the desk in the Demo Room.

    I've taken screen shots of the different values to compare but I can't seem to take any useable photo's through the lenses that show the problem. If I remove the lenses the screen underneath is the same as what the preview window is displaying though.

    IPD:55 Eye Relief:OUT Eye Cup:A http://www.dwsk.co.uk/Temp/Oculus/IPD55-ERout-CUPa.png
    IPD:75 Eye Relief:OUT Eye Cup:A http://www.dwsk.co.uk/Temp/Oculus/IPD75-ERout-CUPa.png
    IPD:64 Eye Relief:IN Eye Cup:A http://www.dwsk.co.uk/Temp/Oculus/IPD64-ERin-CUPa.png
    IPD:64 Eye Relief:IN Eye Cup:B http://www.dwsk.co.uk/Temp/Oculus/IPD64-ERin-CUPb.png
    IPD:64 Eye Relief:OUT Eye Cup:A http://www.dwsk.co.uk/Temp/Oculus/IPD64-ERout-CUPa.png
    IPD:64 Eye Relief:OUT Eye Cup:B http://www.dwsk.co.uk/Temp/Oculus/IPD64-ERout-CUPb.png

    Thanks
    David
  • sthsth Posts: 113
    Brain Burst
    brantlew wrote:
    Off-axis chroma is something we need to address in future SDK revisions because the DK2 lens produce so much aberration.
    Thanks for the info, that explains a lot. My IPD is ~70mm and I get huge amounts of CA as well.
    densohax wrote:
    Sucks that the IPD is still not physically adjustable.
    +1
    The off-axis-blurryness is much better than with DK1 but physically adjustable IPD would be much better.
  • kingtutkingtut Posts: 120
    Hey all,

    Huge amounts of chromatic aberration here as well.

    Settings: Eye to Neck: Default
    IPD: 70.3mm
    Enable Personalized Rendering: Checked
    Display Mode: Direct HMD
    DK1 Legacy App Support: NOT checked
    Eye Cups: A
    Eye Relief: all the way out

    Firmware update was applied (currently at v2.11)

    Aberration occurs in DK2, with picture fine at the center and getting worse as it gets out - with Blue on the outside, and Red on the Inside (i.e. when looking down with the eyes, keeping the head fixed, the Blue channel is further down than the Red channel). In the window, aberration is shown (as expected), however with Blue on the inside and Red on the outside, and to much less magnitude than the HMD - implying to me that the aberration is greater than is being corrected for.

    I also note blurring being different for each eye when looking to the sides - when looking to the left maybe 30-40 degrees, the left eye is very blurry whereas the right is fine. The same applies when looking right with the right/left eyes respectively. My guess is this is an IPD issue to do with the optics, and can't be fixed.

    I'm going to experiment with different settings etc, and will report back if I can find anything which improves things.
  • kingtutkingtut Posts: 120
    Update on this.

    Changing IPD settings, eye relief: Negligible impact (if any)

    Adding DK1 Legacy Support: No impact (with the v0.4 Tuscany or built-in demo)

    Changing to Extend Desktop to the HMD: Largely Fixed!!!

    So there seems to be some difference in the chromatic aberration compensation for Extend Desktop vs Direct HMD access.

    Also, I noticed that the Direct HMD seemed to be pegged at 37.5Hz on Tuscany (Timings ~ 0.6ms, 2.2ms, 26ms), whereas with Extend Desktop I was getting my full 75Hz.

    Given this, I highly recommend using the Extend Desktop to the HMD mode at the moment - although I really liked the concept of the Direct HMD access and hope to use it in the future!!
  • cyberealitycybereality Posts: 26,156 Oculus Staff
    Can you guys please list your OS, system specs, and say whether you are using DK1 or DK2?
    AMD Ryzen 7 1800X | MSI X370 Titanium | G.Skill 16GB DDR4 3200 | EVGA SuperNOVA 1000 | Corsair Hydro H110i
    Gigabyte RX Vega 64 x2 | Samsung 960 Evo M.2 500GB | Seagate FireCuda SSHD 2TB | Phanteks ENTHOO EVOLV
  • densohaxdensohax Posts: 289
    Brain Burst
    Win 7 (x64)
    i3930k
    R9 290X
    16G Ram

    DK2
  • Using extended mode hasn't made any difference for me.

    Specs:
    CPU: i5-3570K 3.40GHz
    RAM: 8GB
    OS: 64-bit Windows 7 SP1
    GFX: AMD Radeon HD 7800 Series
    HMD: DK2
  • mrgreen72mrgreen72 Posts: 683
    Art3mis
    Specs:
    CPU: i7-4790K
    RAM: 8GB
    OS: 64-bit Windows 8.1
    GFX: Nvidia GTX 780 ti
    HMD: DK2

    Didn't try extended mode yet. Will do when at home.
  • kingtutkingtut Posts: 120
    XMG P502 15.6" Pro Gaming Notebook
    1 x 15.6" (39.6 cm) Full-HD 1920x1080 Matte
    1 x NVIDIA GeForce GTX 675MX 4096MB GDDR5 | TDP: 75W
    1 x Intel Core i7-3840QM Quad Core - 2.80 - 3.80GHz 8MB 45W
    1 x 32GB (4x8192) SO-DIMM DDR3 RAM 1600MHz Crucial
    Windows 7 Ultimate (x64) SP1

    Nvidia Control Panel configured to use NVidia Processor as preferred, rather than the low power integrated graphics (Intel HD Graphics 4000). I'm wondering if that low power integrated graphics may be causing problems.

    Happy to provide a dxdiag or similar.
  • kingtut wrote:
    Nvidia Control Panel configured to use NVidia Processor as preferred, rather than the low power integrated graphics (Intel HD Graphics 4000). I'm wondering if that low power integrated graphics may be causing problems.

    I'm not using a laptop with a power saving graphics card and I have the issue. So it's unlikely to be because of that. Although I read there are some issues with that kind of setup in general.

    Can you post a screenshot comparison between Direct and Extended mode? I'm not seeing any difference myself but it can be hard to tell.

    Thanks
    David
  • kingtutkingtut Posts: 120
    Apologies in advance for post size. Photos available in album at http://imgur.com/a/GjGOl#0

    Photos taken with phone camera, shrunk by 25% using MSPaint. Photos of Direct and Extended were taken from around the eye position of the right eye, using the Health&Safety announcement in the Oculus Config Util Demo Scene. The camera was not moved between the photos, although was held by hand so may have moved slightly.


    Extended
    znNAHYK.jpg?1

    Direct
    Wf3BiDW.jpg?1


    Photos were also taken of the right side, but with the lens removed. Interesting to note that these look very similar, but with the Red and Blue channels swapped...

    Extended No Lens
    LiB4Iw8.jpg?1

    Direct No Lens
    ydM7xgO.jpg?1


    I also took a photo of the window that appears on the desktop showing a mirror of the DK2 view, in direct mode.

    Direct (Window)
    8ZYcvTN.jpg
  • CountBorgulaCountBorgula Posts: 202
    Hiro Protagonist
    Yes, this is the problem I am having aswell.

    System Specs:

    MSI-1492 Chassis (Pcspecialist laptop).

    CPU: Intel Core I5-4210M @2.6 GHz (4 Cpus)
    RAM: 8192 Mb
    Windows 7 Home Premium 64 Bit
    Intel HD 4600 -> Nvidia GTX 850M


    Would love to get this sorted!

    Only tried this on direct, still trying to sort orientation issues for extended mode.
  • Interesting Photo's kingtut. What's with the orange background on the Direct Mode Pictures. Is that just your camera getting the colours wrong or is that what you're seeing?

    Could you take a print screen of each mode to compare? Might be useful to see a clean image of what it's rendering in each mode.

    Thanks Again!
    David
  • CountBorgulaCountBorgula Posts: 202
    Hiro Protagonist
    I can confirm that everything looks fine when it is in extended mode, apart from the annoying thing of trying to control my mouse when it is rotated 90 degrees.
  • I can confirm that everything looks fine when it is in extended mode, apart from the annoying thing of trying to control my mouse when it is rotated 90 degrees.

    Are you not rotating the orientation to landscape in the windows screen resolution settings?

    Thanks
    David
  • SRJSRJ Posts: 1
    edited July 2014
    It's better in extended but still present

    Specs:
    CPU: i5-3570K
    RAM: 16GB
    OS: 64-bit Windows 8.1
    GFX: Nvidia GTX 680
    GFX Driver: 340.43 (No change from previous 337.88)
    HMD: DK2
  • kingtutkingtut Posts: 120
    The Orange is what I'm seeing - really strange. I wasn't sure if that was by design or not.

    I can take printscreen of extended and the window mirroring direct, but any idea how I can get a printscreen from Direct-to-Rift?
  • CountBorgulaCountBorgula Posts: 202
    Hiro Protagonist
    Regards the mouse thing will try this. I can also confirm everything is totally fine on my main desktop machine, direct mode no problems and *WHOAH* is DK2 stunning! Specs:

    Windows 8.1 64 Bit
    AMD FX-8320 eight cores @ 3.5 Ghz
    8192 Mb Ram
    GeForce GTX 760 4033 Mb RAM

    Lovely stuff!
  • DracoDynastyDracoDynasty Posts: 6
    NerveGear
    I have had no problems on my desktop computer, but on my laptop I'm getting the same red/orange background and everything is mostly wrongly-colored when I use direct mode. Extended mode is fine.


    Specs:
    CPU: i5-3320M
    RAM: 8GB
    OS: 64-bit Windows 7
    GFX: Nvidia GTX 670M
    GFX Driver: 306.97
    HMD: DK2
  • mitoriousmitorious Posts: 1
    NerveGear
    Hi

    I'm getting the same issue. Same level of CA when extended or direct

    Specs:
    CPU: i5-2550K
    RAM: 16GB
    OS: 64-bit Windows 7
    GFX: AMD 7990
    GFX Driver: latest stable release (not at PC right now)

    DK2
Sign In or Register to comment.