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Any way to fix wallpaper gradients??

TunaNoCrust

Newbie
Jun 10, 2010
34
6
It seems that any wallpaper with a gradient or any shading or glowing is displayed like in 8-bit style. What I mean by that is this.
Colour_banding_example01.png

Its really making alot of wallpapers look hideous and would like to know what I can do to make it look the way it should. Thanks in advance.
 
It seems that any wallpaper with a gradient or any shading or glowing is displayed like in 8-bit style. What I mean by that is this.
Colour_banding_example01.png

Its really making alot of wallpapers look hideous and would like to know what I can do to make it look the way it should. Thanks in advance.
This was the example a lot of people gave due to the EVO only displaying 65,000 colors as opposed to the other devices having in the millions and looking a lot smoother.
 
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This was the example a lot of people gave due to the EVO only displaying 16,000 colors as opposed to the other devices having in the millions and looking a lot smoother.
I used this picture as an example because it showed my exact problem.

Most of my wallpapers with any kind of gradient or glowing is shown this way and I want to find a solution.
 
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Just so this can be used as a reference, i'm gonna go a little in dept here.

might try adding some noise to the pic. just a little bit. I used to have to do this on my touch pro 1+2 on some walls

let us know how they turn out

a quick google turned out this:Say Goodbye To Gradient Banding | Planet Photoshop

this looks promising too
How To Correct Banding In Your Gradients Using Photoshop - SloDive

These methods work in getting rid of the banding lines but what I figured out was to keep the quality, you need to do alot of tweaking and messing around. What I found out was adding a gaussian blur on a new layer thats slightly transparent and adding a little noise on a overlay layer thats slightly transparent is the trick.

This took me 2 mins to do. (Its 6:22am on fourth of July, I'll put up better examples later)

Before

After
 
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So does that mean it is not an issue with the amount of colors that the EVO displays or it still is but this is something to just mask it?

What got me thinking was some of my camera pictures and other pictures in the gallery look stunning but anything I transfer via pc had horrible banding. Didnt make any sense at all. I'm no expert but adding a little blur and noise almost tricks the evo's screen.
 
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Just so this can be used as a reference, i'm gonna go a little in dept here.



These methods work in getting rid of the banding lines but what I figured out was to keep the quality, you need to do alot of tweaking and messing around. What I found out was adding a gaussian blur on a new layer thats slightly transparent and adding a little noise on a overlay layer thats slightly transparent is the trick.

This took me 2 mins to do. (Its 6:22am on fourth of July, I'll put up better examples later)

Before

After


i still se very slight banding and can notice the noise. But its a hell of alot better than before. Thats for sure. Its managable
 
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I just encountered this on my Evo, and I'm very thankful to find this old thread. I've done a lot of testing and this is what I've concluded:

1) The Gallery app is what's causing the banding. For images with gradients, the gallery is trying to be smart by downsampling the color range so that perhaps the background is not too taxing on the CPU when scrolling the homescreens. The banding is NOT a limitation of the Evo's max 16-bit color depth. Banding should not be THAT bad with 65k colors.

2) In some circumstances (like different image formats: gif, jpg, png, etc), the set wallpaper preview image will look perfect (no banding), but when it actually sets the wallpaper, it downsamples it. In other cases, even the preview is banded.

3) When viewing images with gradients via the Gallery app, zooming in displays a flawless image, again proving that the 16-bit is pretty good at preventing obvious banding. But when the image is not zoomed in, sometimes it is blurry, sometimes it's banded, and sometimes, it's sharp. I attribute this to bugs in the Gallery image rendering.

4) I flashed MIUI 1.3.18 (gingerbread). The Gallery app for this ROM loads images flawlessly with no banding. Setting wallpapers is fine as well. All this supports my theory that it's the stock Gallery app that sucks. I'm not sure if the Gallery app in MIUI is custom, or if it's the stock gingerbread version. If it's stock, then this problem goes away if/when your device gets gingerbread.

5) I tried the "add noise" technique above and it fixed the issue. I was also able to tweak the level of noise addition to the point where it was less noticeable but still fooled the Gallery app to not downsample the colors too much.

Hope this helps.
 
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It is a software issue. As someone already suggested, use "Wallpaper Set And Save" from the market. It's the easiest solution.

Another way you can see it: open a high-res pictures with gradients in the web browser and keep it open. Save that picture and open it up in the Gallery.

Dang you are right. The difference between using the gallery app and WSS is massive.
 
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