yashsingh1/xdaforums huggingface dataset:
[Galaxy Note GT-N7000 General] dzontra11:
Guys. .guys...i solve damn problem..please use app named screen adjuster..set contrast to 10 and enjoy.

No black blocks kn video or pictures.....
[Galaxy Note GT-N7000 General] noteworthy:
Yes it does work but you may need to set contrast a bit higher than 10.On some youtube videos that are very compressed,you may need to set it as high as 58 to eliminate the blotches.
[Galaxy Note GT-N7000 General] EarlZ:
Resulting in a grey over cast on the entire screen.. still not a solution :(
[Galaxy Note GT-N7000 General] dzontra11:
Dont know,,never had that proble,,just damn blocks...
[Galaxy Note GT-N7000 General] TeeeJaay:
as long as you enjoy your device and don't notice any problems with it then you're good.

don't let other's complaints affect you since quite possibly not all devices are manufactured equally, if you backread quite a bit some users are reporting having good screens right of the bat or right after exchanging their units or screens
[Galaxy Note GT-N7000 General] Tatsuya79:
Lol, market fiction.

If I were rich you would lick my foot but as I am so kind I don't force you to but... :D

Hey wake up: it's 1~2$ apps, they are complex and you're disrespectful.
[Galaxy Note GT-N7000 General] gattari:
Yes 58 is the right value, but on screen the black is grey :(

Inviato dal mio GT-N7000 usando Tapatalk
[Galaxy Note GT-N7000 General] dzontra11:
Just for some video i use 58....for the rest 10 and it is good.

For me best result is. .pictures...cleen.
[Galaxy Note GT-N7000 General] BerreZ:
Update

Still waiting to find the perfect Gnote I went today on a quest.

First I went to the shop where my friend did buy his Gnote with a perfect screen , there pretend to buy one if I could look at the screen first . I've learned now that you can easily see the banding in the calculator and util now when you have banding you will have clipping. So there I've tested 2 phones , both had the screen issues. Then this afternoon went to another shop could look at one they had in display this one was the worst I've seen.

So as from today I had 3 different Gnotes , could look at 3 models in a shop all with defaults and have seen 2 models with what it seems a good screen.

So it's not looking very good for the moment with a only 25% of perfect phones.It looks more like a lottery.

Friday I'm gonna try the same approach in some other stores .

All the Gnote with the issues where not equaly bad.

I also mailed samsung Europe more than one month ago a claim.

They seem to have finished to sleep because I've got this response today , but I'm still trying to understand what they are saying ;

"Thank you for contacting Samsung Techwin Europe’s CCTV technical support team.

We acknowledge receipt of your email, and are committed to replying to your message within 1 working day.

If requesting RNA's Or Spare Parts please clearly state in the subjuct line that it is a RNA request or Spare Parts Request as below and this will help speed up them being processed.

RNA Request / Samsung Techwin (Your Company Name) / 1099854 (your reference)

Spare Parts Request / Samsung Techwin (Your Company Name) / 1099854 (your reference)

If you require assistance that is more urgent, you may in the first instance contact your distributor for assistance, or call our technical support line on 0800 169 1269.

Thank you"
[Galaxy Note GT-N7000 General] supercurio:
Thanks for sharing.

Can you please describe in details what was wrong/good with the several screen you could see?

I know you didn't had a colorimeter but maybe you can tell a little more, that will help to get a broader view on sample variance.
[Galaxy Note GT-N7000 General] EarlZ:
http://xdaforums.com/showpost.php?p=21543811&postcount=248

That is my sample contribution. What can you tell me about it?
[Galaxy Note GT-N7000 General] DrShkene:
Hi all, here is my first post so don't yell at noob please :-)

I spent a few days reading all this treads regarding Gnote screen issues and those color bending, wrong gamma, black blocking on video etc. I must say that I also have all those problems. Most annoying issue is black video clipping/blocking.

My Gnote was bought in Serbia from one of the major carriers (on 24 months contract).

I examined and tested my phone in order to find some explanations and now I wont to share my opinion whit you.

As many other users i have a terrible video playback issues whit default Samsung settings. On gammatest.png my Gnote shows pitch black on 3-2-1-0. Whit Supercurio fix 80% of black blocking are gone and gammatest.png shows total black only on 1-0 fields. This improves a video playback a lot, but there is still some noticeable blocking. It seams that display is unable to show all black/white gradients, only 3 or 4 of them are displayed instead at least 22 like on gammatest.png.

You can fix blocking totally by using those screen contrast setting apps and set screen on 10-50 contrast but that work only on software mode in video players and videos than lag badly. So this cannot be considered a proper solution.

However, in default browser when u look at gammatest.png all thing seems OK, perfect gradients. I also noticed that browser use some additional CPU power to "fix" image (probably due 32bit rendering). You can also try to do some tests on lagom.nl/lcd-test/ and u will notice that Gnote screen pass most of tests very good, but browser struggle to display content so there is some lag on loading. Definitely browser uses some software tricks to fix image at cost of CPU power.

Problem is, i think, how to implement that "browser method" on a hardware decoding level by not sacrifice much system resources. Maybe it is not possible due hardware/software limitations but i wish to believe there is still a solution.

Onother not complete but acceptable solution is to develop app that will be able to temporary disable total black on a hardware level just for video playback and replace it whit as close as possible gray. That will cause black not to be real black but at least videos will be smooth even in HW mode. I other words is it possible to do what screenajuster does just on hardware level like voodoo screen tuner done it? I hope you will understand what i want o say.

Supercurio I think is on a good trail.

Any new ideas and solutions?

Sorry for long post. Thanks for your patience
[Galaxy Note GT-N7000 General] dzontra11:
Screen ajuster is not bad but black is grey..no lag on video at all.
[Galaxy Note GT-N7000 General] DrShkene:
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.
[Galaxy Note GT-N7000 General] Inuit:
I think the videoplayer that comes with the phone uses hw- accelaration. With this player i can use screen adjuster without problems.

Greetings

Inuit
[Galaxy Note GT-N7000 General] DrShkene:
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?
[Galaxy Note GT-N7000 General] Alien7:
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
[Galaxy Note GT-N7000 General] jdmwellington:
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!
[Galaxy Note GT-N7000 General] S_X:
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. :)
[Galaxy Note GT-N7000 General] mannysy:
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!
[Galaxy Note GT-N7000 General] EarlZ:
Both issues are hardware and cannot be fixed by software.
[Galaxy Note GT-N7000 General] EdgaBimbam:
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? :)
[Galaxy Note GT-N7000 General] EarlZ:
Its a software problem but the effects vary from phone to phone from what me and the others have seen.
[Galaxy Note GT-N7000 General] martcerv:
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.
[Galaxy Note GT-N7000 General] BerreZ:
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.
[Galaxy Note GT-N7000 General] hobs0n:
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 :)
[Galaxy Note GT-N7000 General] jdmwellington:
Are you sure mate? I note super curio has released an application to resolve green hue issue successfully on other Samsung devices?
[Galaxy Note GT-N7000 General] DaveC1964:
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!
[Galaxy Note GT-N7000 General] jay_993:
I honestly miss full voodoo color and sound from sgs1.
[Galaxy Note GT-N7000 General] DaveC1964:
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 ----------

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.
[Galaxy Note GT-N7000 General] EarlZ:
We might be talking about a different green hue. What im referring to is the hue when you dont view the device straight up.
[Galaxy Note GT-N7000 General] jdmwellington:
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.
[Galaxy Note GT-N7000 General] Ngambek2003:
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 GT-N7000 General] Braxos:
Ok now something that has nothing to do with the app from supercurio but with the banding. I tried this image as lockscreen.

And as it should be there was on the whole screen bright and dark horizontal lines. But when i touched the screen to unlock it the strips disappeared and the photo was to seen as normal. So i didn't unlock the screen and took away the finger. And see there the picture was better even it had some banding on the places where weather and clock is but the rest of the picture was lets say perfect, even i locked and walked the phone few times there was the same result. Now few minutes later i tried to unlock the phone and there was again the banding on the photo, but touching the screen and leaving it some of the banding did go away.

I will try to get some screen captures.
[Galaxy Note GT-N7000 General] supercurio:
Sorry its not already published.

****loads of work required before it can be ^^
[Galaxy Note GT-N7000 General] indie:
Do you mind posting images to show no more black clipping also a photo with the gammatest image?
[Galaxy Note GT-N7000 General] Ngambek2003:
Here they are. It's really hard to take pictures without getting a reflection.

On the gamma test, I can't see anything under 4. On the video, I used the Rusty Moderat video around the 23s mark. I used to get a lot of black clipping there but not on this new unit. So all this without supercurio's fix.

So unfortunately it's very random. I've seen two notes with black clipping but otherwise decent screen. On this one, no black clipping but a faint narrow dark vertical band when viewing dark grey backgrounds.
[Galaxy Note GT-N7000 General] BerreZ:
At this point I was able to seriously test 12 Notes at home and basicaly test 4 of them in different shops.

All of them , so 100%, are faulty.16 is not enough to take very scientific conclusions and it is even possible that region of origin has also to be taken in account but I'm pretty sure that all the Notes present the same problems.No one is perfect and the peolple thinkng this do not notice the problems.

I aslo tested the same files in the same conditions on a Galaxy SII , an Asus Transformer , a HTC HD2 running on Android a HTC Sensation and even the pictures on an Iphone 4. I could not notice any flaws on these devices

I'm convinced also that all the problems banding , clipping , grey halo , pixelation and so on do have the same origin.

I'm afraid that the problem is partially hardware ( pentile technology ) and partialy software most of the application are not designed to run on a amoled screen with this kind of resolution.

So for the moment I will not continue my quest for a perfect Note , he do not exist , and will wait until Samsung aknowledge the problem and will try to fix it.

I also proposing to let Sammy know for instance at this adres : http://www.samsung.com/uk/support
[Galaxy Note GT-N7000 General] supercurio:
The reports are interesting.

Shows its extremely difficult to fix for everyone, as Ngambek2003 sample tend to contradict previous ones.

@Ngambek2003 I may have some infos to ask you later [note to self]
[Galaxy Note GT-N7000 General] voxano:
Didn't you tell us about a week ago in this same thread that you met two people who had flawless Notes?..

How can you say now that it doesn't exist?..
[Galaxy Note GT-N7000 General] EarlZ:
To minimize reflections take the picture in a totally dark room and have a tripod or something to steady the camera and set thw shutter speed to something like 2 or 5 seconds.
[Galaxy Note GT-N7000 General] sibere:
This is looking much closer to what we all should have on our Notes.

The gamma gradient is very good !
[Galaxy Note GT-N7000 General] EarlZ:
Such variance on units, on my friend's note that shows almost close to no black clipping we get the very same result with the gamma test image, we both cut off at 4. But the picture above is a pure winner!
[Galaxy Note GT-N7000 General] sibere:
I wouldn't mind cutting off a 4 instead of 1 if 4 was barely visible in a dark room. But ATM even 1 is very visible on my note :/
[Galaxy Note GT-N7000 General] Ngambek2003:
Sure supercurio..I'd be happy to help.
[Galaxy Note GT-N7000 General] EarlZ:
So that means you have no clipping in vids?

There is a probability that a perfect screen is out there but it must be extremely rare, some who claimed not to have banding/clipping have yet to post proof, but instead they keep yammering and intentionally side track their response.

EDIT:

If you can get your refund, keep us posted.
[Galaxy Note GT-N7000 General] sibere:
I do have clipping because level 1 is too bright.

So when blacks are level 1 and 0 close together, I have a sudden drop from dark grey to deep black. not visible in a normal environement, but very visible in a dark room.
[Galaxy Note GT-N7000 General] chikess:
I Have something Strange color issues, when i open a Menu, eg im tapatalk by Holding a thread, my right border of the screen gets a red blur, Same issue on the grey Background in the market. With the voodoo app it becomes some better but it looks heavy ugly. Also, only on grey, i have a heavy clounding at the bottom of the screen, and i can see the icons for a few seconds in this area on grey Background, after a few seconds they dissapear - looks like a burn in. I belive that i bring it back to the Shop.

Gesendet von meinem GT-N7000 mit Tapatalk
[Galaxy Note GT-N7000 General] BerreZ:
Is it possible that we are looking at the problem the wrong way ?

I tried thesamsunggalaxynotegamma picture on a Galaxy S2 and was only able to see up to 12.But on this phone the moderate rusty nails video played perfectly also when banding is visible like the splash screen of the XDA application it is lot less noticable than on a note.
[Galaxy Note GT-N7000 General] betoNL:
The answer my friend, is blowing in the wind.....:)

Btw, does the perfect phone exist (any phone , any type) ??
[Galaxy Note GT-N7000 General] voxano:
He answered it in couple of other threads where he posted the same comment.

And... I wouldn't use the word "perfect"... By now it's pretty clear from the pictures that people posted here and, in related threads, that some units display more flaws than the others. So the question is if some of these flaws are common to all devices, or if there are some Notes which don't show any flaws.

So if somebody has the Note with a flawless screen, please report :-)
[Galaxy Note GT-N7000 General] piit79:
Just to set the record straight - this is NOT what is considered clipping IMO.

Clipping means the dynamic range is limited, ie. you cannot see the the last few darkest black levels, because they appear totally black (black clipping) or the last few brightest white levels, because they are completely white (white clipping).

What you are seeing is more an incorrect gamma curve.
[Galaxy Note GT-N7000 General] Hirudin:
I'm sorry! I didn't read the post above closely enough. Please disregard this post...
[Galaxy Note GT-N7000 General] sibere:
You're right. But the resulting visual effect is the same.
[Galaxy Note GT-N7000 General] thepiecesfit:
Good app with potential. But it crashes my epic touch 4g. LED turns blue and reboots when i wake my phone from sleep. Looking forward to more development. Thanks for the work
[Galaxy Note GT-N7000 General] martcerv:
I'm pretty sure this app is only meant for the galaxy note.
[Galaxy Note GT-N7000 General] darkinners:
Hi guys. I wondering if the app already released? I see some folks in this thread seems already using it but I can't really find the download link, thanks
[Galaxy Note GT-N7000 General] TML1504:
you have to DL it from the market, search for "voodoo screen tuning R&D"
[Galaxy Note GT-N7000 General] jdmwellington:
So does the tuning app already released to a good job at removing the green tint? If so I'll consider rooting my note!
[Galaxy Note GT-N7000 General] EarlZ:
What green tint?
[Galaxy Note GT-N7000 General] jdmwellington:
My screen is considerably green, this issue also occurred on the galaxy s 2. I understand super curio provided an asp that successfully resolved this by tweaking colour settings