yashsingh1/xdaforums huggingface dataset:
[Nexus 5 Themes and Apps] fireproofrev:
New version of app available, now it is working again with francos new kernel:)
[Nexus 5 Themes and Apps] Batfink33:
Where?
[Nexus 5 Themes and Apps] LRC1710:
Where ?
[Nexus 5 Themes and Apps] farsight73:
Using Cataclysm rom with faux kernel.

I use the settings taken from a poster here(meg0 or something..forgot his name) and the yellowish screen is not completely gone.

Did a compare with my friend nexus side by side and the different is obvious. Both phones brightness set at 35%.

I'd since set the settings to "Set On Boot" and been happily ever after.. amazing!

Check pictures attached.. mine is on the left.. and also the settings included..

PS: Fully credit to the poster for posting those settings. The guy is amazing..! :good:
[Nexus 5 Themes and Apps] ihatelolcats:
version 1.0.11 in the links in OP
[Nexus 5 Themes and Apps] Batfink33:
Still doesn't work with Francos kernel for me.
[Nexus 5 Themes and Apps] tomciopaluch357:
Same here I'm on Franco r32 and not working.
[Nexus 5 Themes and Apps] hello00:
in the meantime use franco's display control
[Nexus 5 Themes and Apps] cjrivera04:
Nice find. Didn't even know that was out there.
[Nexus 5 Themes and Apps] franciscofranco:
Because my current released binary doesn't have the new sysfs interface. However faux could and should make the path find dynamic, I posted a code solution for him couple pages ago. Anyway you can use my free app if you want in the mean time and you can use faux's again when he fixes it/I release a new binary with the new sysfs path, if you prefer to use his app.
[Nexus 5 Themes and Apps] camielkb:
I can't find a free display control app. Happy to see things move forward!
[Nexus 5 Themes and Apps] rajendra82:
It's here.
[Nexus 5 Themes and Apps] the baptizer:
how do you guys install te bin. color profile? if i rename it to .apk and then try to install it, it tells me unable to parse etc,,

thanks
[Nexus 5 Themes and Apps] ganeshp:
You don't install the bin file. It should be copied to nexus_display_control/color profiles folder created by the Frank display app in /sdcard

Use a file Explorer to do this
[Nexus 5 Themes and Apps] DarkMD:
Okey... someone have the gamma values of the LG G2??? i just want my N5 looks like the LG G2 screen
[Nexus 5 Themes and Apps] yorici:
Firstly: http://xdaforums.com/showpost.php?p=2031989&postcount=45

Secondly read this faq: http://xdaforums.com/showpost.php?p=49561443&postcount=13757

Thirdly: search the franco thread

Finally, stop using three question marks, you like a damn 10 year old.
[Nexus 5 Themes and Apps] DarkMD:
Why you have to be so rude? i'm asking a question and is no for you
[Nexus 5 Themes and Apps] grizzlywan:
Welcome to XDA.
[Nexus 5 Themes and Apps] yorici:
Because you didn't google it. https://plus.google.com/photos/+supercurioFrançoisSimond/albums/5922861640488991233?banner=pwa

What were you going to do with this info? Because the characteristics of your screen are not the same as the characteristics on a lg g2;s screen, increasing gamma won't do it and will affect other things.

What you should do is this:

Google: How to make the colors pop (or something like that)

Read and read more

Try to apply that to your nexus.

Edit:

Dude really? You have a lg g2 according to your posts... Why are you asking us?

Even if you wanted a more accurate number, that wouldn't work for your nexus 5 unless you have a colorimeter. And if you don't know how to measure your gamma without a colorimeter, you should read the faq i posted...
[Nexus 5 Themes and Apps] neriamarillo:
Spoon fed? Dude there is a lot of information in this thread and in Franco's kernel thread. And BTW [MENTION=4809179]yorici[/MENTION] does have a right to say that since he is one of the top contributors for adjusting the gamma and colors right now of the N5 which is still a work in progress. So again I suggest to go read for a while instead of posting and just wanting to be spoon fed...
[Nexus 5 Themes and Apps] DarkMD:
So what? That does not give you the right to act like you're the last coke of the desert. If you're good at something and you came to XDA to SHARE your knowledge, to help others. I just asked if someone know the gamma values of the LG G2 (if there are ones).

But leave it like that... Thanks FAUX, keep with the good work

---------- Post added at 07:41 PM ---------- Previous post was at 07:37 PM ----------

If you read, you will see that i lost my G2
[Nexus 5 Themes and Apps] yorici:
Oh the irony xD sorry for jumping to conclusions there.

But the fact is that Googling gave me the values pretty quickly. To avoid bashing, you should google shizzle. I got it within two searches..

And posing your questions in a more intelligent manner avoids some bashing too ;) (really, 4 questions marks annoys people)

Now if you want the G2 colors, do as I say and google how to make colors pop. Read all about it and try to apply that to your phone. This implies however that you get some knowledge of displays and you probably don't as you asked that question. Therefore i recommend reading this entire thread (yes, all of it) and then read all the posts by rajendra and me on Franco's thread. Until then you will probably not be able to make your colors pop.. Good luck

Settled now?
[Nexus 5 Themes and Apps] DarkMD:
Thanks a lot. This is a much better answer.

Sorry for my bad english but my native language is spanish. And sorry for the question marks, i know that is annoying.
[Nexus 5 Themes and Apps] farsight73:
Simple thing is.. if you don't like other poster post dump questions.. just ignore it. Or help them honestly.

Just don't write something that will reflect your ownself negative values.
[Nexus 5 Themes and Apps] yorici:
I helped him didn't I? Moreover, if I would have replied to him the first time as I did the last time, he would probably not have learned something about it. I hope he understands now that he should search before posting and pose questions in a more appropriate manner. He seems to me to have learned that.
[Nexus 5 Themes and Apps] rajendra82:
I think it would be quite valuable to do positive adjustment tests on green and blue. We are red limited, and the stock profile clamps down on green and blue to get the colors close to neutral. The most often heard complaint about the screen is that it has a yellowish or reddish tint, which means that the clampdown is bit too aggressive for some users (either due to panel variation, or due to perception of a neutral white compared to other consumer devices that are much cooler). There are hardly any users complaining about their displays being too cool (although to be honest, stock is a touch too cool for me, and your tweaked settings are just right, this sort of confirms anandtech measurement of a 7000K temperature). The most demanded profiles are on the cool side of stock, so positive results on the green and blue can help on loosening up the stock clampdown. Negative results are good, but nobody is asking for warming up the color temperature, it seems; justified as it might be in some cases. In the absence of tests we could live with reversing the deltas and loosening up the greens and the blues that way, but you seem already set up to do this, so when you get around to it, I would much appreciate the availability of some real data.

I also can put to use the great idea of doing half correction using slightly different positives and negatives. That can help in some tight spots near the low end.
[Nexus 5 Themes and Apps] mag01:
Yes I'll try that, but it was terrible experience to get even those negative adjustments properly. Now I've got a decent method to do it so I'll see. But now I need to take some break :D

And I noticed there's quite big variation between color output of these displays. There are even some direct comparison photos that demonstrate that. For example my display needs mostly a bigger reduction of green level and slight adjustments to the blue, while someone else may need something completely different.

But I'll try to cover more adjustments later.

I'd also like to return to gamma corrections which I've done before, and review them and try to add even stronger correction as some people seem to request gamma around 2.3. The problem here is that getting such high gamma leads to decrease of the contrast ratio so I'll try to review these corrections and try to find out better setups (if possible),
[Nexus 5 Themes and Apps] jyuuken:
Why do mine says old kernel driver?,i updated to the latesr faux beta and its not allowing me to make changes
[Nexus 5 Themes and Apps] yorici:
Let me refer you to this FAQ. It's a new app implemented with more user friendly design.

http://xdaforums.com/showpost.php?p=49561443&postcount=13757

Though if you do want to use the app and having to enter 70 values every time, I suggest you revert back to v10 instead of v11. But since you are probably new to this thread, I recommend having a look at the FAQ and the Franco thread. Please use the franco thread as more people will be there to help you if you have any questions. Everything should be explained in the FAQ though.
[Nexus 5 Themes and Apps] GUGUITOMTG4:
What happens is that faux123 latest kernel release is NOT a beta. So, you may have an outdated version of faux kernel.

The last is 008u or 008m. not beta version.

You don't need to downgrade the app. but upgrade kernel

Here is the one that I'm using from faux

http://faux.androidro.ms/hammerhead/kk44/hammerhead-faux123-008u.zip

TRY AND REPORT BACK.:good:
[Nexus 5 Themes and Apps] jyuuken:
Yup this kernel is working. Just trying yo learn how this works. The yellow tint on my gnex5 is pretty bad... :(

---------- Post added at 09:28 PM ---------- Previous post was at 09:03 PM ----------

I have uses this and follow the values but no changes to the yellow tint do i need to click apply on every tab after the values are changed?, or just click ir once on the white gamma tab only?
[Nexus 5 Themes and Apps] GUGUITOMTG4:
Now is when you need to pay atention and research.

the above post by yorici contains some useful links/info worth to read as well as mag01 posts too.

btw, this is one of the most technical explanation by mag01 and some examples on how to achieve a desired effect.http://xdaforums.com/showthread.php?t=2544128&page=62

also I would like to share what I'm using

Better White & Black. Includes: 2.2 (Red, Blue, Cyan, Grey, Magenta) and 2.3 (Green & Yellow). G & Y @ 2.3 will help me reduce the stock yellowish looking!

Same value for Pos/Neg

RED:......45,55,65,75,85_ 95,100,105,110,115_125,130,125,115,115_ 85,65,50,40,30_ 25,15,10

GREEN: 20,30,40,50,60_ 70,80,90,100,110_ 120,130,120,115,115_ 85,60,50,40,35_ 25,20,10

BLUE:....20,30,40,50,60_ 65,75,85,95,105_ 115,120,125,120,120_ 90,70,60,45,30_ 25,20,15

If trying this or any preset. I recommend you to 1. Wipe faux gamma app data. 2. very important, input all the values for all colors and only when done, hit 'Apply', toggle 'Set on boot' on. Finally turn on-off display and see the changes and read the thread..
[Nexus 5 Themes and Apps] jyuuken:
I greatly appreciate your help on this. Should i decide to use francos display app since its more newb friendly to change the settings is there a similar configuration that can lessen the yellow tint?
[Nexus 5 Themes and Apps] yorici:
I had that issue with beta 11 with Franco's kernel. So reverted to 10. That's why I assumed downgrading would probably resolve the issue. But isn't the app a bit unnecessary? I only use it to when I want to set specific registers to specific values. I mostly use the Display App now
[Nexus 5 Themes and Apps] GUGUITOMTG4:
yep, It was all discussed 3-4 pages back but as you say "Because you didn't google it." in this case, Because HE didn't google it.:laugh:

He believed he was using latest kernel and I put him in the right one. I also think going back to v10 is his best choice as it's globally compatible with some other kernels while v11 to my eyes does the same as 10.

---------- Post added at 05:55 PM ---------- Previous post was at 05:42 PM ----------

Indeed its easier using franco app. Many of those profiles are meant to reduce yellow (because is the main target), but I don't use them. so, you need to visit franco thread or test different profiles or ask these guys here. https://www.dropbox.com/sh/izp5dwyxl73xlt2/wehHWcJdQE
[Nexus 5 Themes and Apps] yorici:
Haha, I'm sorry. I just got mad as I spend some time writing a faq and people still failed to read/search. I'm writing a summary for myself and perhaps others if they want. It's about gamma/color temperature/etc. Definitions, things we know about the registers, and priorities (what should be calibrated first).

It's a remap of what we learned and what's out on the Internet to learn.
[Nexus 5 Themes and Apps] impulse101:
Yes and you have to turn the screen off and back on again
[Nexus 5 Themes and Apps] rajendra82:
I would like to share my Nexus 5 color profiler spreadsheet, which utilizes the [MENTION=5543250]mag01[/MENTION] test data to build a set of controls to automate profile editing and creation. This creates a profile you can load using Franco's display control app:

https://www.dropbox.com/s/wkpadoxaa3p1bsa/Nexus5_Color_Profiler.xlsm
[Nexus 5 Themes and Apps] rajendra82:
Tweaked the profiler a bit this morning. Added reset button and tweaked the overall adjustment formulas and individual brightness adjustment formulas to be more "linear".

https://www.dropbox.com/s/wkpadoxaa3p1bsa/Nexus5_Color_Profiler.xlsm
[Nexus 5 Themes and Apps] tylerdurden83:
Congratulations raj, that's impressive work!
[Nexus 5 Themes and Apps] yorici:
Have a look at the presets in Photoshop

I have looked at your sheet. I opened Photoshop CS5 yesterday and I looked at some presets Adobe had for contrast. And the preset looks like the following image: http://cdn.tutsplus.com/vector/uploads/legacy/tuts/000-2012/479-sratchboard/1a.jpg

Have a look at it in Photoshop if you have it (there are easy ways to get it ofc;). They also have presets for darken/lighten image, saturation etc. This is input vs output on the axes (both run from 0 to 255). We also control input vs output. Input should be something like insanity then (every step = (255/23)

Linear vs exponential

This implies though, that the curve would be originally linear. At this moment I don't know anymore if the curve should be first linear or a powerlaw of 2.2. It could be that gamma correction is applied after our register. For our register linear seems the best because of the following reasons:

1) The stockcurve is more linear than logarithmic. You can determine this yourself with excel: graph - add trendline - display Rsquared. Rsquared gives a value between 0 and 1. It's a ratio between all the variables and the variables that were explained by the proposed curve. Normally one would let excel do all the work, but as we know that there is a power law of 2.2, I converted all the variables to x^(1/2,2) and I got a more linear line. Still it was not beated by the linearity of the normal stock curve. So mathematically speaking the stock curve is more linear than exponential. (Linear: 0,9946; Exponential excel: 0,876; Exponential 2,2: 0,9707 ==> This may not be seen like much of a difference, but a perfect linear line has a Rsquared value of 1,0. That means that linear is just 0,0054 off vs 0,0293 (5,5 times more!))

2) A linear profile works better than a exponential profile. A profile that is completely linearly (for every color the same values) already works better than a profile with a power law of 2,2. The latter gives banding, faulty color balance and it clearly wrong. Basing your future profile on a mathematical profile that already works, is much more logical to me.

Linearity on gamma correction

In your third version of the insanity profiles and their derivatives a linearity is applied for the shadows. I find this to be too much according to Charles Poynton. Have a look at page 5 of this doc.

This is Video signal vs light intensity. Videosignal is proportional to light intensity(wiki), where as light intensity seems to me at least positive correlated to luminance (if not proportional)(Just logics). Therefore making this image valid. If you have a look at the image, it will show that it is linear for 8,1% of the curve. This would translate to 8,1%*24 = 1,94. However, light intensity has to be converted to luminance. Poynton gives us a formula on page 4 in this doc, but I'm not sure how to interpret this formula. (I don't know what Y means).

[MENTION=5543250]mag01[/MENTION], What do you think?
[Nexus 5 Themes and Apps] tomciopaluch357:
Why do i get this message after installing an app i get this message Warning.This kernel has older incompatible kernel driver.Please update to latest kernel ?? I'm on r32 Franco i don't get it ?
[Nexus 5 Themes and Apps] GUGUITOMTG4:
:eek: I found the answer

http://xdaforums.com/showthread.php?t=2544128&page=95

read carefully all posts:eek::(
[Nexus 5 Themes and Apps] rajendra82:
I am reading the Poynton resource, and it is excellent. Thanks for posting the link to that. I haven't gotten to page 5 yet, but if the page says the curve is linear for 8.1% of the range of the curve near black it makes perfect sense, but not in the way you are thinking. I was playing with the profile editing spreadsheet, and found out that using a linear tail near the shadows for the last 11 registers (i.e., 13 through 23) produced a kink in the curves. However if I kept using exponent until register 18 or so, and then used the linear tail for the last five registers (i.e, 19 through 23), the curves looked smoother. You are thinking I am using the linear portion for too much of the curve because 5/24 is much more than 8.1%, but you are not considering how the registers are used. The human vision is much more sensitive to changes in shade in the dark colors, but not so much in the light colors. So Google/LG use a lot more registers in the dark parts of the curve to provide fine adjustments, but use very few in the light part of the curve. If you recall what [MENTION=5543250]mag01[/MENTION] posted with changing registers and testing the effects with light meter. Register 1 affects the lightest colors, and registers in this part of the array affect large ranges of intensities. In fact the top half of the curve (100% to 50%) is covered by just the first six registers. This makes sense, because if human vision is not sensitive in this area of the display. Why waste storage on lots of different intensities here, when nobody can tell the difference. As you continue the registers start to affect a smaller and smaller range of intensities. Registers 7 through 12 cover from about 50% to 25% intensity. And registers 13 through 23 are used for the last 25% of the curve. This means that It is quite likely that the last five registers cover the final 8% of the curve, and exponent use stops somewhere near here, and linear tail use begins. If you go back and re-download the spreadsheet, you will see better looking curves produced.
[Nexus 5 Themes and Apps] yorici:
Yes, I can see that and I understand your point. Actually 0,32^2,2=0,0815 and 0,32*24=7,7≈8. (Though I thought you did a linear line from value 13-24 as I recalled one of your posts saying it, but 5/24 is already a lot better).

The calculations are based on the assumption that the curve should be x^2,2, but that was my second point. I'm not so sure about that. See previous post for more.

Charles Poynton has more on his site other than those to files. Just shorten the link to get on his main site. All the pdfs are freely accessible :) And props to [mention=3250376] Chazzmat[/Mention] for pointing me to Poynton
[Nexus 5 Themes and Apps] rajendra82:
The only issue with the Poynton resource is that it is dated and applies to NTSC broadcasts seen on CRT monitors. The ATSC broadcasts and all new devices use the sRGB encoding standard. For this standard the tail starts at below level 0.04045 if you are working in a 0 to 1 color space or below input level 10 if working in the 0 to 255 space. I also took another look at what level each register kicks in and I now think it is a simple square power curve. So register 1 defines level at full value of 1, 2 at 1- (1/24)^2 = 0.9184, Register 3 at 1 - (3/24)^2 = 0.8403, and so on. This simple curve matches closely (but not exactly) the @mag01 colorimeter test data , with the halfway point of the space falling around Register 8, 25% falling exactly at register 13, and when you are down at level 20, you are controlling level 0.0434, which is close to the transition point of sRGB transform to a linear tail. So I am planning on using gamma exponent approach on values above register 20, and below that use a linear approach. I will update the spreadsheet and my profiles with this thinking soon. The linear tail between registers 13-23 was my initial thought, I know that's too much now with the profiles it produced being unsatisfactory. I was thinking close to the last five registers for linear tail yesterday based on the trial and error method, but I now think even that is a bit too much. I plan on using the tail on the last 3 registers from this point going forward, because this has a more sound basis in theory.
[Nexus 5 Themes and Apps] AGiLiT:
Would it be a benefit to have all three color curves displayed on the same chart? It's been a while since I read mag01's posts, but I thought one of the goals was to get all three colors aligned. Definitely not an expert on this so apologies in advance if it's a dumb question.
[Nexus 5 Themes and Apps] rajendra82:
It is very easy to put all three color curves on one chart, but it wouldn't really be of much benefit to anyone. The panels we have are all much cooler shade of white than the sRGB white point. To rectify this Google clamped down on the green and blue contrast and brought the temperature close to 6400K. This makes the color curve not line up, as green and blue curves are shooting for lower maximum value than red. If you want to rebalance color temperature closer to neutral on your specific panel, because it's a shade warmer or cooler than the average panel Google calibrated for, then you are lookin to make finer adjustments up and down like [MENTION=5543250]mag01[/MENTION] did. Its better to look at the individual starting color curve versus where you end up after either moving the sliders or changing those five points.
[Nexus 5 Themes and Apps] yorici:
Is there a reason for power law of 2? Or just trial and error'd?

Can you convince me that we should use an exponential curve instead of a linear curve (except for a part of the shadows)? Because mathematically stock is more linear, and using a linear profile already works out better than an exponential curve. How can we be sure that we have to apply a gamma correction and it is not applied later by the device?
[Nexus 5 Themes and Apps] ChazzMatt:
You are welcome. I do try to be helpful. :good:

He's a legend in the field, especially on gamma. His personal website is quite understated, not reflective of his true influence on video displays.