Galaxy Note colour rendering issue: started working on it.

DrShkene · Jan 19, 2012

dzontra11 said:
Screen ajuster is not bad but black is grey..no lag on video at all.

Sent from my GT-N7000 using xda premium

I dont know for you but I have lag when using screen adjuster with MX Video player in SW mode for playing some 720p mkv files . In HW mode there is no lag but screen adjuster do not work only supercurio voodoo screen tuner helps.

So what i pointed in previous post is that we need (if there is no proper and complete solution) some similar app like screen adjuster that can work in HW mode in video players. That will save battery and eliminate lag in some HQ videos.

Also my Gnote is just rooted all other is on stock.

Inuit · Jan 19, 2012

I think the videoplayer that comes with the phone uses hw- accelaration. With this player i can use screen adjuster without problems.

Greetings

Inuit

DrShkene · Jan 19, 2012

Inuit said:
I think the videoplayer that comes with the phone uses hw- accelaration. With this player i can use without problems.

Greetings

Inuit

I combine "native" in voodoo screen tuner whit -10 in screen adjuster but that only work in sw mode. (just native work in both sw/hw modes)

I'm not sure maybe I'm doing something wrong. Default video player have HW acceleration but it somehow bypass screen adjuster (like any other player i tried) and display true black instead of grayish one which cause unnatural black blocking .

Is it only case on my note?

Alien7 · Jan 19, 2012

Hi supercurio,

I mailed you lots of times about this issue in the Galaxy S2. I believe it´s the same code so it will work on both phones. Hope, you will get it. Good luck

jdmwellington · Jan 20, 2012

Hi guys,

I'm getting a little lost. Could someone please confirm:

1) Green hue issue (which is very prominent on my device) - is likely to be a software issue and potentially fixed with supercurio app? which i'm more than happy to wait/pay for

2) Horizontal lines/grid patterns particularly visible on grey backgrounds is a hardware screen issue that software can not fix? I also have this on my device but does not bother me as much as the green hue

Thank you XDA!

S_X · Jan 20, 2012

I've user Supercurio's voodoo R&D, but with the native mode enabled i can see the gammatest.png up (down?) to 2. Then it's again straight black. Thanks for the improvemnet anyway.

mannysy · Jan 20, 2012

I thankfully managed to exchange my galaxy note after going back to the store and comparing it with two other notes... mine was much more noticeably green tinted at low brightness levels, even while looking at it straight on.

I still have black clipping but I think that is a software issue. This is a warning to others to try to get their notes replaced if there is heavy tinting!

EarlZ · Jan 20, 2012

jdmwellington said:
Hi guys,

I'm getting a little lost. Could someone please confirm:

1) Green hue issue (which is very prominent on my device) - is likely to be a software issue and potentially fixed with supercurio app? which i'm more than happy to wait/pay for

2) Horizontal lines/grid patterns particularly visible on grey backgrounds is a hardware screen issue that software can not fix? I also have this on my device but does not bother me as much as the green hue

Thank you XDA!

Both issues are hardware and cannot be fixed by software.

EdgaBimbam · Jan 20, 2012

EarlZ said:
Both issues are hardware and cannot be fixed by software.

what about black color issue? i have very bad quality of black color portrait. I dont have any horizontal lines, tilts or smt like that, only black color low quality portraits. Is it software problem?

EarlZ · Jan 20, 2012

EdgaBimbam said:
what about black color issue? i have very bad quality of black color portrait. I dont have any horizontal lines, tilts or smt like that, only black color low quality portraits. Is it software problem?

Its a software problem but the effects vary from phone to phone from what me and the others have seen.

martcerv · Jan 20, 2012

jdmwellington said:
Hi guys,

I'm getting a little lost. Could someone please confirm:

1) Green hue issue (which is very prominent on my device) - is likely to be a software issue and potentially fixed with supercurio app? which i'm more than happy to wait/pay for

2) Horizontal lines/grid patterns particularly visible on grey backgrounds is a hardware screen issue that software can not fix? I also have this on my device but does not bother me as much as the green hue

Thank you XDA!

Green hue issues are both hardware and software in parts. The software issue i remember from a while back when i used to play racing Sims on the PC when they were still fairly low spec, using 16bit graphics mode would boost performance but cause colour banding, the main thing I noticed was smoke that's grey in 32bit mode would tend to be greenish in 16bit mode.

That's the software part of the issue and the other part is that there isn't a great deal of consistency in oled displays in the note. A screen calibration app could help here after we could all manually set our calibration to get more accurate colour rendering. So even this i think is a combination of software and hardware but for the most part should be fixable.

The reason the green hue is more of an issue for some then others depends on the individual screens colour calibration which determine what colours end up rendering on their screens.

Hopefully supercurio can create a calibration app as i don't think a single preset calibration fix which works on his screen will necessarily look good on many others due to the overall screen inconsistencies.

The lines are software at times where some images will render properly at tinges in done apps but then show lines or banding in others. There are though some screens which also have hardware issues producing lines through the screen at all times.

Sent from my GT-N7000 using xda premium

BerreZ · Jan 20, 2012

So the last two day I did exchange my Gnote two more times , for a total now of five exchanges and six Notes. All have been faulty , the third one was the most acceptable.I've seen yesterday another Gnote who seems not to have problems but couldn't be able to test it toroughly but gonna try to do it tomorrow.
I've also tried the different videos and pictures on a Galaxy IIs and didn't notice any clipping/pixelation in the test videos.Banding was more difficult to test but was less noticable in the XDA splash screen but this is also visible on a lcd screen so it's probably the application and was not all visible in angry birds.
So I think that it is not the Amoled technology on herself that is the problem here.

hobs0n · Jan 20, 2012

First I want to thank you supercurio! You are indeed a great great soul to this community

I just bought VoodooLouder and its great! And I just discovered this thread and ofcourse tried the app and indeed its great! It is SO much better know! I donated a small amount too. I assume you will let us know if you need more to keep developing

jdmwellington · Jan 21, 2012

EarlZ said:
Both issues are hardware and cannot be fixed by software.

Are you sure mate? I note super curio has released an application to resolve green hue issue successfully on other Samsung devices?

Sent from my GT-N7000 using XDA App

DaveC1964 · Jan 21, 2012

QuadLight said:
i make some foto and editing it in photoshop to show how "gammatest" should look

http://imageshack.us/photo/my-images/818/25194847.jpg/

Now that looks too dark. Everything past 6 is gone instead of 4. This means in video all shadow detail will be crushed and not seen at all. The Infuse is like that (well maybe worse) and it is not good. I agree that the stock setting is too bright and not ramped right, but yours is a bit too dark. Maybe something in between is better. It seems the jump from 9 to 8 is too much. Then again I am viewing on a computer LCD so that probably effects it.

A nice option would be an adjustable slider or something. If you are not in a pitch black room then you may need a different setting.

The first thing I do with TVs is shut off all of that contrast "enhancing", dynamic this or enhanced sharpness that etc. All those things do is screw up the image by making overly saturated, crush blacks and artificially "sharpen" by adding ringing around edges etc. DNIE is the devil!

jay_993 · Jan 21, 2012

I honestly miss full voodoo color and sound from sgs1.

Sent from my Galaxy Note using XDA App

DaveC1964 · Jan 21, 2012

martcerv said:
The reason the green hue is more of an issue for some then others depends on the individual screens colour calibration which determine what colours end up rendering on their screens.

Hopefully supercurio can create a calibration app as i don't think a single preset calibration fix which works on his screen will necessarily look good on many others due to the overall screen inconsistencies.
Sent from my GT-N7000 using xda premium

Well all Notes are calibrated the same, as in they have a factory setting. I really doubt people are sitting there adjusting color hues on every screen. It is not that they are all calibrated different it is that they are all MADE slightly different. Since the RGB emmitters are deposited on the screens you will get some batches where one emmitter is a bit thicker, thinner etc. While the differences would be minniscule it is enough to tint the screen slightly. If green is a little thicker on a screen or blue/red a little thinner you get tint. Then you have variations in the electronics lik TFTs driving the pixels etc. Then there is the fact that blue is inherently weaker on OLEDs.

It is much easier for an LCD to do white because basically an LCD doing "white" is just turned off and letting all of the backlight through. Since OLEDs have to make white it is harder. This is why there should be a service menu somewhere like old CRT TVs had where OLED screens could be calibrated by user or service technician. It seems manufacturers are still in the LCD mindset. That and they may think that someone buying a cellphone will not be picky about PQ like a videophile would, and just not bother about it, which is unfortunate.

---------- Post added at 04:41 AM ---------- Previous post was at 04:26 AM ----------

TML1504 said:
ICS uses native 24bit decoding, GB only 16! So it should be better, if not solved, on ICS!
Therefore I can imagine that Samsung wont "waste" time in GB anymore...

Sent from my GT-N7000 using xda premium

That ain't it. I have an Infuse with *Froyo* and there is NO banding at all (tested with angry birds Rio title screen). BTW I compared A-B with the Note and the Note has severe banding, the old infuse is perfectly smooth. The Note is supposed to be all powerful and stuff but they nerfed the color rendering in apps! Makes no sense.

EarlZ · Jan 21, 2012

jdmwellington said:
Are you sure mate? I note super curio has released an application to resolve green hue issue successfully on other Samsung devices?

Sent from my GT-N7000 using XDA App

We might be talking about a different green hue. What im referring to is the hue when you dont view the device straight up.

jdmwellington · Jan 21, 2012

EarlZ said:
We might be talking about a different green hue. What im referring to is the hue when you dont view the device straight up.

Thanks. I have that issue but additionally when the device is viewed front on there is still a green "tint". Tint is amplified considerably when device is viewed from and angle; it is always present to some degree.

Sent from my GT-N7000 using XDA App

Ngambek2003 · Jan 21, 2012

So I did get my note replaced.

On the bright side, no more black clipping on videos. The calculator app shows no banding. All this without supercurio fix. There's very little difference in native mode with supercurio's fix.

Now the downside, there's a faint but somewhat noticeable vertical narrow dark band going down the middle of the screen when viewing dark grey backgrounds.

Hmm..so I don't know whether to keep this one or get it replaced again..

Galaxy Note colour rendering issue: started working on it.

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