Database Develop

s-amoled color saturation

Hi.
I was wondering (and when I say this I mean I started to play Modern Combat 2 and my eyes started bleeding from all that burning green), if it is possible to install a custom display driver on the galaxy S to reduce the saturation of colors. Don't get me wrong, I love the strong contrast but the saturation is just waaaay to much, beyond anything realistic.
I saw the voodoo app that can tweak the colors of the display, however it cannot do anything about the powerfull colors.

try galaxy tuner

Finally!!!!! Thanks!
Had to set both values to 15 for it to look like my friends' galaxy s color
Now it looks much better

Well I did try it, but It's not the color balance that's the problem, it's the saturation. I think there should be an app that normalizes the value between r, g & b pixels so on a certain color the difference is x % less that what the application sends to the driver, yet retaining the average value.
Or something, I don't know exactly how it should work but I figured out it would be like this.
Thing is everything looks like a cartoon with the drfault settings, compare a game from iphone with same one on the galaxy. The difference is huge, and not in a good way for galaxy. I think maybe samsung exagerated in the implementation of the displaye so people were amazed by the vivid colors, but for me (as a photographer & visual artist) is just bad.

For who is interested I've done an App called "ColorModeChanger" to correct saturation and change color values as you want.
Please Google for it or join my Google+ Community at: https://plus.google.com/communities/115325924116611951925

Cyanogenmod is the solution
i'm sure cyanogenmod have those screen adjustements!!! just search

[Q] Why is text not crisp on the NC?

I read somewhere that although the LCD screen of the nookColor is 1024x600, the graphics chip is actually outputting at a much lower resolution and it is being scaled/interpolated to fit the 1024x600 screen. Is this why small text is hard to read and not as crisp as like on my EVO? This is especially noticable on widgets and icons like SwitchPro battery indicator. It's near impossible to read the battery percentage.
If this is something I can disable (font smoothing or something), I'd definitely do it.

I've never seen this problem on any of the nooks I've used?

Mine is crisp and clear.

really? it looks like microsoft ClearType is cranked way up. All the letters are fuzzy instead of crisp and clean edges like on a PC or an EVO. I've noticed it on every nook I've picked up.

This is the first complaint I've seen of fuzzy text. Did they have some kind of matte screen protector or something over the display?
I can't imagine a dedicated bookstore making a (supposedly) dedicated ereader without ensuring it had crisp text.

are you sure the app isnt upscaling, and designed for a small screen?
if they arent using vector images then they would blur in upscaling.
otherwise, i havent experienced anything at all like what you explain

Found where I read about the video output:
GPU Processor: PowerVR SGX530 Graphics Rendering: Open GLES1.1/2.0 Hardware Scaling: 854x480 scaled to 1024x600 Video Formats: .3GP, .MP4, .3G2 ** Video Codecs: H.263, H.264, MPEG-4, ON2 VP7 ** Image Formats: JPEG, GIF, PNG, BMP ** (same GPU as Droid 2 and Droid X)
Click to expand...
Click to collapse
from: http://www.androidtablets.net/forum/nook-color-technical/3483-nookcolor-full-specifications.html

I agree about the text, depending on what you are reading I do see a fuzz around the letters.
Sometimes its poor pdf quality.
I also think the video quality is kind of washed out and not as sharp as it seems it should be.

Glad I'm not the only one who is bothered by this. I certainly never noticed it on my wife's iPad and the nook should be crisper considering the dpi. UNLESS we are actually seeing an 854x480 output interpolated to 1024x600 instead of native like other devices.

wy1d said:
Found where I read about the video output:
from: http://www.androidtablets.net/forum/nook-color-technical/3483-nookcolor-full-specifications.html
Click to expand...
Click to collapse
From what I've read this applies purely to video decoding. Anything the OS renders from apps to text does not have this problem. That being said mine is incredibly crisp.

For those who say theirs is crisp, what are you comparing to? For example, the text on the xda app on my EVO is much much easier to read than the xda app on the nook.

wy1d said:
For those who say theirs is crisp, what are you comparing to? For example, the text on the xda app on my EVO is much much easier to read than the xda app on the nook.
Click to expand...
Click to collapse
AMOLED HTC Incredible with CM7.
I just made a close-up side-by-side comparison of it with the NC. The NC's text is actually smoother around the edges of the letters than the Inc's, while the interior of the letters looks more "solid" on the Inc, probably due to the physically larger pixel-grid on the NC's display. Note that this was from a viewing distance of about two inches.
To me, it's a wash. At a normal viewing distance, they appear about equal and both look great.
This isn't in any particular app, though. I have some of the same widgets and apps on my home screens, so I was comparing the widget text and icon labels.

wy1d said:
For those who say theirs is crisp, what are you comparing to? For example, the text on the xda app on my EVO is much much easier to read than the xda app on the nook.
Click to expand...
Click to collapse
Not really comparing it to anything. My iPhone4 is more crisp but it has a much higher ppi. It's just good overall, I mean your evo probably has more ppi(idk the evo specs) so I doubt the text would appear as crisp to that. I mean the text isn't blurry at all so I guess I'd say it's just as good as a book and better than a newspaper

wy1d said:
For those who say theirs is crisp, what are you comparing to? For example, the text on the xda app on my EVO is much much easier to read than the xda app on the nook.
Click to expand...
Click to collapse
That is not the nook's fault. What you are referring to is pixel density.
If you have a phone with a small screen at 840x480 versus a screen more than double the size only scaling a 1024x600, the pixel density ill be lower on that device.
Our pixel density on the nook is about 169
ipad is about 133
iphone 4 is over 300 which is why that screen looks so sharp

Anybody who says that the display is being generated at 854x480 and upscaled to 1024x600 is, well, wrong. First of all, 854x480 is not the same aspect ratio as 1024x600(the equivalent would be 820x480, which nothing renders in), so those claims are completely made up.
More conclusively, even a smidgen of playing about with any pixel-related app(Multitouch Visualizer shows distance between touches) will plainly show that the screen is, in fact, 1024x600. You can also look up the LCD panel type(see the teardown thread), or ask ANYBODY that is doing hardware dev on the thing.
"Blurriness" can result from poorly-coded apps doing a bad upscale on their graphics, or from you needing to buy glasses. But the device itself is 1024x600, and looks just fine to me.

What you have posted there are video upscaling stats. The nook hardware cannot process video above 852 pixels wide so upscales to 1024. With that said the nook color has been reviewed to have a higher pixel density than the iPad and I have never seen anything less than sharp text.

MattJ951 said:
From what I've read this applies purely to video decoding. Anything the OS renders from apps to text does not have this problem. That being said mine is incredibly crisp.
Click to expand...
Click to collapse
I think this is correct, I looked at a list of 16x9 resolutions and this is what I see:
WVGA 854 × 480 ~16:9 1.783 410,880 total Pixels.
and
Used in many netbooks 1024 × 600 128:75 1.707 614,400 Total Pixels
I think the 848 (close to 854) by 480 is their attempt to render 16x9 or close to it for video. But that is just my guess.
Posted from http://en.wikipedia.org/wiki/List_of_common_resolutions
Also, if you are not aware of it, there is a way to change font size when reading... I have never noticed any fuzzy text on the NC screen. Try a few different things and find your happy place.
migrax

I edited my build.prop and changed lcd density to 150. Everything looks much crisper. I snapped some macro photos of it before. Will post tomorrow.

[MOD] Nexus S screen color. explanation of the 2.3.3 colors, calibration tools!

Hey
I see there is desire for insights and understanding by reading press articles about 2.3.3 color change.
First, a statement:
What I know:
- What I will explain here
- 2.3.3 change looks bad on my device : Colors are washed out, the response is very far from a 2.2 gamma / sRGB calibrated screen should look like.
What I don't know:
- If the result is bad on every screen. Probably not.
It's known Samsung manufactured at least 2 different Super AMOLED screen revisions, and it's possible that 2.3.3 looks perfect on some screens.
Links:
Issue 15039: Android 2.3.3 screen yellowish
What changed:
In 2.3.3, the screen (framebuffer) driver has been updated.
This screen driver consist of several files, including code that calculate gamma adjustment points and brightness levels dynamically based on a reference gamma table.
Change in 2.3.3 can be categorized in 3 types:
Code and gamma points calculations
1/ A new feature introduced is the ability of the driver to read informations from the screen hardware.
So far, there was no detection at all, just configuration sent.
Now the driver has the ability to ask to the screen: "what are your factory calibration levels for Red, Green and Blue"
2/ Another change is in the driver initialization sequence, supposed to setup the internal screen control hardware calculations for gamma 2.2 instead of something else (not specified)
It has the effect of brightening shadows.
Color temperature change
The updated driver has the ability to use multipliers to adjust the screen temperature on the linear scale.
In theory, it should allow to change red/green/blue levels without altering the color rendition accuracy, despite the complex calculations needed to generate color profiles at each brightness levels.
Today, those Red Green Blue multipliers are fixed in stone, but I'll publish shortly a kernel version + an app so you can control them manually.
It will needed to be treated with care because of potential overheat or fast burn-in side-effects at too high brightness levels.
Different Gamma table (aka Super AMOLED color profile)
Colors calibration for Super AMOLED design has almost no common points with current methods applicable to LCD only.
Calibrating a AMOLED screen requires to setup 255 different hardware correction profiles, one per brightness level.
Instead of that, math calculations, based on a reference gamma table are used to setup responses applied by the screen hardware, that control each single led accordingly.
On a LCD screen it's much simpler as the LCD panel response is always the same: One profile is virtually enough as brightness changes correspond to adjustments of the backlight power.
This is why LCD-type adjustment calibration or color change tools (like the one in CyanogenMod) cannot be used to calibrate Super AMOLED screen.
The gamma table has been vastly updated. It also brighten the shadows compared to previous profiles.
However, Google's previous Gamma table exhibited a purple deviation in dark grays, especially at low brightness settings. This new gamma table fixes the issue.
Source files:
- main driver - calculations
- hardware gamma adjustment points placement
- gamma table (and in the same file: screen initializations sequence)
Commits - source changes:
1/ ARM: herring: panel: Adjust pentile gamma table
2/ s3cfb_tl2796: Add support for reading mtp gamma register offsets
3/ s3cfb_tl2796: Add debug function to read current gamma correction registers
4/ ARM: herring: panel: Add support for reading mtp data
5/ ARM: herring: panel: Update gamma table
6/ ARM: herring: panel: Correct color temperature.
Conclusions
The new driver is properly (I would say: smartly!) written. It implement features exactly how it should be done.
Also, it should work well on each screen revision as it adapt to them.
However, something went wrong in the process.
Calibrating a screen cannot be done
Also, this is a Super AMOLED. Contrast Ratio of it is almost infinite.
Trying to apply exactly color profiles designed for lesser screens, with lower contrasts and gamut cannot work, by design.
However it doesn't mean a Super AMOLED screen is condemned to exhibit washed out or absurd over-saturated colors.
In a similar way, calibrating plasma TVs is not easy but can lead to excellent results.
Kernel for color developers, allowing hardware calibration
In this post
and this one
Yes, a third one too
Yet again another one
write in progress... comments welcome already

just a bit of extra info
http://www.engadget.com/2011/02/27/nexus-s-2-3-3-update-adjusts-screens-color-temperature-we-go-e/
Poll shows
2607 like the new colors.
727 do not like the new colors.

terryhau said:
just a bit of extra info
http://www.engadget.com/2011/02/27/nexus-s-2-3-3-update-adjusts-screens-color-temperature-we-go-e/
Poll shows
529 like the new colors.
157 do not like the new colors.
Click to expand...
Click to collapse
Yes but I think the poll accuracy is affected by the article's photo,
The camera white balance used favor 2.3.3 color rendition.
On the color accuracy topic, the photo is not representative of what you see on the actual screen.
It allows however to calculate differently:
581 (14.9%) "looking good"
170 + 82 + 142 = 394 not happy with the update. "No, my screen looks terrible." + "No, mine's plagued with other bugs here." + "No, everything's gone wrong!"

The poll asks people how they think it looks on their device, not in the picture.
But i agree, polls are inaccurate.
I haven't actually seen the 2.3.3 color profile on my own device because none of the custom kernels here use it. And i don't want to use a stock kernel (cm7 user).
When you update your kernel, will it use the new profile by default?

terryhau said:
The poll asks people how they think it looks on their device, not in the picture.
But i agree, polls are inaccurate.
I haven't actually seen the 2.3.3 color profile on my own device because none of the custom kernels here use it. And i don't want to use a stock kernel (cm7 user).
When you update your kernel, will it use the new profile by default?
Click to expand...
Click to collapse
Yeah, this poll cannot be accurate as the poll answers are for different questions, mixing color changes and general update modifications.
This poll is invalid by design ^^
You cannot add apples and oranges.
Until we manage to get nice colors from the new driver & gamma table, I'll publish mine with the old solution + the Voodoo color profile applied from the app.
But in this thread yes I'll publish a special kernel running the new code. But with the ability to customize it.
The goal is to let people try adjustments and share them

When the 2.3.3 update was released a few days ago, my immediate reaction was positive. I noticed how dramatically better the greys looked. Colors looked more accurate. I viewed the change as positive. I was quite vocal about how this was a fix, not a problem.
http://forum.xda-developers.com/showpost.php?p=11632473&postcount=7
http://forum.xda-developers.com/showpost.php?p=11631763&postcount=56
http://forum.xda-developers.com/showpost.php?p=11630603&postcount=49
http://forum.xda-developers.com/showpost.php?p=11629424&postcount=41
http://forum.xda-developers.com/showpost.php?p=11628604&postcount=30
http://forum.xda-developers.com/showpost.php?p=11618865&postcount=448
http://forum.xda-developers.com/showpost.php?p=11618733&postcount=446
Unfortuntately, after nearly three full days of use I must take back every single one of the above posts. My screen looks terrible. The colors ARE more accurate. The greys ARE much better. However, overall my screen looks like it has jaundice. Everything listed in post #49 referenced above (ie. the dialer) does look dramatically better. However, my whites are terrible. They are not "yellow" per se, but they look like they have a slight yellow tinge like a subtle parchament effect. And honestly, I think since I knew this was an intended fix I convinced myself to like it. I figured the yellow was just my imagination because it was overly blue before, and yellow is the opposite of blue. If I look at my Facebook widget, GMail app, or Market app objectively three days later I can honestly say the yellow is real, and it is quite gross. When compared directly to my girlfriend's myTouch 4G the change is even more apparent. It's not that her whites are overly blue...mine really do have a subtle yellow tinge. And although stock and voodoo are both a bit oversaturated, the new 2.3.3 cover profile does appear undersaturated or "washed out."
Last night I reverted to voodoo color and WOW, it was a breath of fresh air. The colors are not as accurate. However, I don't care. The jaundice is gone, and my screen is vibrant again. If I must accept a tradeoff, I'll take the vibrant oversaturated colors over the sickly jaundice update colors. And this is coming from someone who initially viewed the change as overwhelmingly positive. I suppose subtle differences in sAMOLED manufacturing and each person's own perception of color make each person's preference different. Some people's screens may not have the yellow mine does. However after almost three days of trying to like the new profile, and then a VERY throrough comparison of stock 2.3.2, voodoo, and 2.3.3 ...I'll stick with voodoo. I just can't take the LED jaundice.
Thanks for your hard work supercurio. I'm really looking forward to the calibration tools.

You know @mhaedo, if it a screen looks terrible (in some situations) it's always because the color rendition is not accurate.
Despite each screen physical/technical limitations.
People will tell you "it's washed out because it's calibrated" => wrong.
There is nothing more beautiful − objectively − than a accurately color calibrated screen.
I mean, with a calibrated screen you just forget it because everything is how it should be.
Because it becomes neutral, you don't see the screen anymore, only the images displayed on it.
Thanks for your report!

supercurio said:
You know @mhaedo, if it something looks terrible it's because the colors are not accurate.
People will tell you "it's washed out because it's calibrated" => wrong.
There is nothing more beautiful − objectively − than a accurately color calibrated screen.
I mean, with a calibrated screen you just forget it because everything is how it should be.
Because it becomes neutral, you don't see the screen anymore, only the images displayed on it.
Thanks for your report!
Click to expand...
Click to collapse
Well greys are definitely more accurate and look great. However I suppose you are right. As a whole, it is not accurate. I just purchased your voodoo donate market app to support the development. Thanks again.
Sent from my Nexus S using Tapatalk

supercurio said:
You know @mhaedo, if it a screen looks terrible (in some situations) it's always because the color rendition is not accurate.
Despite each screen physical/technical limitations.
People will tell you "it's washed out because it's calibrated" => wrong.
There is nothing more beautiful − objectively − than a accurately color calibrated screen.
I mean, with a calibrated screen you just forget it because everything is how it should be.
Because it becomes neutral, you don't see the screen anymore, only the images displayed on it.
Thanks for your report!
Click to expand...
Click to collapse
I tend to disagree that people forget about a color calibrated screen. Actually, I know it to be completely false. Most best buy locations have a color calibrated TV display where they have two TVs side by side; one calibrated and one not. If you ask people which TV looks better 99 out of 100 people will tell you the overly blue saturated TV is clearly more bright and has deeper blacks. Those people are wrong. That is exactly what is going on here and its exactly why Samsung and others do this to displays. I'm all for giving people the choice when it comes to their screens but I'm also for not letting people perpetuate a falsehood; I've looked closely at my screen and my wife's, looked at every "horriblely" yellow tinted screen people have posted pictures of and I stand by my statement that there us nothing wrong. People are just used to horribly tuned screens.
Sent from my Nexus S using XDA Premium App

There is calibration and calibration.
Often, the name calibration is used for reddish screen tones and dull colors.
It should only describe a rendering scientifically accurate that fit the intended target color space.
Most times: sRGB color space.
However, I fully agree on the temperature. 6500K, which is the natural sRGB white point is fine compared to natural colors in exterior, but it's rarely the best choice for screens except for people working on imaging only.
I don't think either it's the absolute best choice for a mobile display.
- Cooler (more blue) temperature look better inside especially: more.. white
- We are used to blueish screens. As a consequence 65000 looks strange to most of us.

Polls don't mean a lot, if there are different screen versions, it's possible that the update works great on some screens and not on others.. It's possible that the people answering the Engadget poll have in majority devices with the same screen for which the update worked great.
The Google forums posts say exactly the opposite, 90%+ not happy and only a few happy.
In my opinion it is not possible to think that the colors on the screen of my phone look correct. The screen colors look like something you find on a cheap LCD or an old LCD screen with worn out back light that gives no more contrast.
Anyhow with Supercurio's kernel the issues is temporarily fixed.
Thanks for the hard work!

You're welcome.
It's barely a choice, I would prefer selling my Nexus S than using it with 2.3.3 colors
Voodoo color profile V1 currently is app is far from perfect however. I gave it a 5 or 10 rating only.
− Began porting latest Voodoo color code and code documentation in 2.3.3

kenvan19 said:
I tend to disagree that people forget about a color calibrated screen. Actually, I know it to be completely false. Most best buy locations have a color calibrated TV display where they have two TVs side by side; one calibrated and one not. If you ask people which TV looks better 99 out of 100 people will tell you the overly blue saturated TV is clearly more bright and has deeper blacks. Those people are wrong. That is exactly what is going on here and its exactly why Samsung and others do this to displays. I'm all for giving people the choice when it comes to their screens but I'm also for not letting people perpetuate a falsehood; I've looked closely at my screen and my wife's, looked at every "horriblely" yellow tinted screen people have posted pictures of and I stand by my statement that there us nothing wrong. People are just used to horribly tuned screens.
Sent from my Nexus S using XDA Premium App
Click to expand...
Click to collapse
Look, I'll agree that an overtly "blue" tinted screen is not good, both for colour accuracy and the life of your SAMOLED screen.
But, I do not for a minute believe the current 2.3.3 colour profile is anywhere close to "calibrated" or "accurate". It's not. Some are experiencing extreme yellow tint and washout. Also as supercurio's Voodoo colour profile has demonstrated the "purple tint" issue can be eliminated without introducing a yellow tint.
And I will repeat this over and over again until I can't type. NOT all SAMOLED screens are the same as supercurio pointed out. There are displays out there more negatively impacted by the 2.3.3 driver update.

supercurio said:
You're welcome.
It's barely a choice, I would prefer selling my Nexus S than using it with 2.3.3 colors
Voodoo color profile V1 currently is app is far from perfect however. I gave it a 5 or 10 rating only.
− Began porting latest Voodoo color code and code documentation in 2.3.3
Click to expand...
Click to collapse
You rock!
I agree about selling the NS due to 2.3.3. I never intended to unlock my bootloader and mess with the kernel.. But here we are, and thankfully you did the amazing work of helping us out.
And I agree there's room to improve (and I will leave that to the master), there is still too much blue tint on my screen, even if the purple tint has been eliminated. I can imagine obtaining a 6500 temperature on this phone, and not the yellow tinted mess Google provided.

supercurio said:
You're welcome.
It's barely a choice, I would prefer selling my Nexus S than using it with 2.3.3 colors
Voodoo color profile V1 currently is app is far from perfect however. I gave it a 5 or 10 rating only.
− Began porting latest Voodoo color code and code documentation in 2.3.3
Click to expand...
Click to collapse
based on the downloads of my kernels...people running 2.3.3 prefer "2.3.2 w/voodoo colors" 2:1 over stock "2.3.3 colors"
thanks for your attention

MadFerIt2011 said:
Look, I'll agree that an overtly "blue" tinted screen is not good, both for colour accuracy and the life of your SAMOLED screen.
But, I do not for a minute believe the current 2.3.3 colour profile is anywhere close to "calibrated" or "accurate". It's not. Some are experiencing extreme yellow tint and washout. Also as supercurio's Voodoo colour profile has demonstrated the "purple tint" issue can be eliminated without introducing a yellow tint.
And I will repeat this over and over again until I can't type. NOT all SAMOLED screens are the same as supercurio pointed out. There are displays out there more negatively impacted by the 2.3.3 driver update.
Click to expand...
Click to collapse
You are entitled to your opinion but I will just say this: I have not seen a single picture of a screen that possesses this "yellow tint" that does not look normal to me. You're right though, SuperCurio fixed the purple tint without normalizing the colors, however his fix (this isn't meant as a slight to SuperCurio as I am a great believer in his work and his skill as a developer) didn't actually make the screen look natural. I still hold to my belief that what most people are claiming is a bug is really just a result of the fact that manufacturers have been using this type of over-blue saturation for years and that most people's eyes have become accustomed to it not to mention the fact that our eyes are easily tricked into seeing bright blue as brighter white.

kenvan19, you need to see how a professionally calibrated screen look like

supercurio said:
kenvan19, you need to see how a professionally calibrated screen look like
Click to expand...
Click to collapse
I used to calibrate screens professionally. I calibrated all the screens in my home, my parents home and my wife's parents home. I have quite a lot of experience with the subject, actually, and I'd really appreciate not being talked down to about it.

Great news keep the good work man
I'm getting ready for Donation cheer

kenvan19 said:
I used to calibrate screens professionally. I calibrated all the screens in my home, my parents home and my wife's parents home. I have quite a lot of experience with the subject, actually, and I'd really appreciate not being talked down to about it.
Click to expand...
Click to collapse
Ah okay sorry. I'll be interested by your collaboration then with the upcoming release, especially if you still have calibration hardware !

[Q] SGNote unnatural colors?

Since I can't see an SGNote in a store yet, curious if the SAMOLED's less than natural colors ever bothers you, they seem to bother me on the lower resolution SAMOLED phones but a bit less on the same res but lower pixel density Tab 10.1 screen (however I prefer Transformer's IPS for a tablet)? -Thx
P.S. - I've heard mention in video reviews that the SGNote does have better color calibration than its other SAMOLED's handhelds.
http://www.mobiletechreview.com/ubbthreads/showflat.php?Number=41813
"Blacks are extremely deep and colors are richer than life, which is typical of Samsung's Super AMOLED display technology. For this high end phone, Samsung spent some time calibrating and tweaking it, and the blue color cast found on other Galaxy phones is at a minimum, and pure black images are pure black with no banding or light patches."
http://www.youtube.com/watch?v=Es7orfYUc3w#t=03m57s

There are three color settings that are select able by the user. They go from very saturated to about normal.

dennishhh said:
There are three color settings that are select able by the user. They go from very saturated to about normal.
Click to expand...
Click to collapse
I didn't know that, cool, I'll look into that, if anyone uploads a YouTube video I'd like to see if that shows up..-Thx

same as computer monitor
i was shocked at how different the colors where when i got my capitvate. unnatural is the only way to put it. took me a long time to get use to the pumped up color amoled screen. (certain colors are increased because that is ones your eyes see easier making the screen pop) so when i was thinking of buying the note i had read that samsung gave the owner the choice to change that pumped up look to a more natural scheme i was thrilled. the lower saturation of color feels more closely to regular lcds. when i hold the phone next to my high end computer monitor with the same picture they are very similar in hue and saturation. although sometimes when i am showing off the big screen phone to friends i switch to the standard amoled setting (because the colors pop) i usually choose the lcd type setting for everyday use. hope this helps.

bedspringlex said:
i was shocked at how different the colors where when i got my capitvate. unnatural is the only way to put it. took me a long time to get use to the pumped up color amoled screen. (certain colors are increased because that is ones your eyes see easier making the screen pop) so when i was thinking of buying the note i had read that samsung gave the owner the choice to change that pumped up look to a more natural scheme i was thrilled. the lower saturation of color feels more closely to regular lcds. when i hold the phone next to my high end computer monitor with the same picture they are very similar in hue and saturation. although sometimes when i am showing off the big screen phone to friends i switch to the standard amoled setting (because the colors pop) i usually choose the lcd type setting for everyday use. hope this helps.
Click to expand...
Click to collapse
It does help, thanks, how is that color setting changed?
P.S. - Even on my newer Samsung TVs, when someone with blue eyes comes on the screen they can look fluorescent fake giving it a sci-fi vibe that can look ridiculous!

SMARTPHONEPC said:
I didn't know that, cool, I'll look into that, if anyone uploads a YouTube video I'd like to see if that shows up..-Thx
Click to expand...
Click to collapse
Zedomax did it http://www.youtube.com/watch?feature=player_detailpage&v=RsmDvvckt6k#t=1096s but ideally still would like to see it in person. The higher res screen must help as the colors are not bothering me like they do on lower res SAMOLED screens. I'll check out the 720p SGNexus in person even though I don't think it has the SGNote 3 color settings ("Dynamic, Standard, Movie" in Settings->Display-Screen Mode) that provide more user control.
Still would also like to see the SGNote with other launchers+cool live wallpaper as I'm no fan of the stock TouchWiz look..it shouldn't be too difficult to make it look cooler than stock right?

[Q] Correcting color temperature

Both reviews and measurements have shown the HTC One to have a cold color temperature. This is something that should be correctable in software. Do custom ROMs ever include improvements to color temperature?

You'll have to wait until custom kernels are developed and have the screen calibration feature implemented.

clbell said:
Both reviews and measurements have shown the HTC One to have a cold color temperature. This is something that should be correctable in software. Do custom ROMs ever include improvements to color temperature?
Click to expand...
Click to collapse
What do you mean by color temperature. My physics background is messing with me here and I have seen some reviews and mention great color reproduction. So can you describe what you mean?

bobruels44 said:
What do you mean by color temperature. My physics background is messing with me here and I have seen some reviews and mention great color reproduction. So can you describe what you mean?
Click to expand...
Click to collapse
he may mean that screen is not 6500k

cihanleanne said:
he may mean that screen is not 6500k
Click to expand...
Click to collapse
Yes, whites are 7800 Kelvin on the HTC One which is pretty cold. I believe it was done purposely to make it look brighter. Daylight is 5500-6500 Kelvin and 6500 is about the temperature of an overcast sky. Colors should be a bit more accurate if the temp is lowered closer to daylight. It should be easy to fix, someone just has to do it.
There is actually a spec for that. Look up CIE D65. Can't post a link since I'm new here.

bobruels44 said:
What do you mean by color temperature. My physics background is messing with me here and I have seen some reviews and mention great color reproduction. So can you describe what you mean?
Click to expand...
Click to collapse
Colour temperature is one of the measures of the colours a screen produces. If you set a particular pixel to be red 255, green 255, blue 255 the question then is, how much actual red, green and blue light is that pixel emitting? Different screens will produce different relative amounts; so, while you're telling the screen "white, please!" in each case, what you actually see varies from display to display.
Strictly speaking, the more useful measure here is "white-point". There is an internationally-agreed standard for display devices (e.g. televisions and monitors) called D65 which defines the exact ratios of red, green and blue that white is supposed to contain.
(I'm saying "white" here, but the same applies to any other point on the "greyscale" - that is where the logical red, green and blue values are all equal. So a pixel that is red 67, green 67, blue 67 should have the same ratio of red, green and blue light as a white pixel).
"Colour temperature" is a less precise way of measuring white point - it ignores the green component, and looks only at the relative amounts of red and blue light (so a screen can have the correct colour temperature but still be too purple or too green). Colour temperature is measured in Kelvins, and says that the balance of red to blue light is the same as would be emitted by a black-body at that temperature. D65 is approximately equivalent to a colour temperature of 6500K, and people measuring white/grey accuracy tend to measure colour temperature rather than white point, because there is no easy way of writing down a white point as a single number.
So, if a display has a colour temperature of 7800K, that means that a white or grey pixel is emitting too much blue light and not enough red.
The terminology is made more complicated by the fact that when people talk about adjusting the "white balance" or "colour balance" of the screen, they usually use the word "cool" to mean "more blue" and "warm" to mean "more red", which is obviously the opposite of what the colour temperature value is doing - a higher colour temperature means the display is more blue.
My own HTC One has a white-point that is visibly pushed towards the blue, and a couple of reviews have noted this: one at tweakers.net and one at uk.hardware.info ; but relatively few reviewers bother to measure colour temperature, and there have also been one or two contradictory reviews, notably one at computerbase.de.
A larger number of reviews measure maximum screen brightness, and most of those seem to come up with numbers somewhere around either 385 or 485 cd/m-2 but with nothing much in between those values. This suggests HTC may be using at least two different displays on different One handsets. If they are, it's possible there may be differences in white-point as well... but evidence for that is still mostly speculative.

Did anyone figure out how to make an adjustments to color profile on HTC One?
I have 2 HTC One's and one of them has nice cool bluish screen, and another one became much warmer (yellowish) after the firmware upgrade. And that drives me nuts, as that colder look is what I really love about HTC's screen
Phone is rooted and runs custom rom if that matters. Please share your knowledge if anyone know how to make the adjustments.