2014/10/16 上午 08:10:27

android Programming Glossary: banding

http://stackoverflow.com/questions/13118005/android-background-image-memory-usage

I have done switched them to 565 RGB but this makes some banding problems which I cannot accept . I would also accept in case..

High resolution Image - OutOfMemoryError

http://stackoverflow.com/questions/18385362/high-resolution-image-outofmemoryerror

means 4 bytes per pixel. Very good article Bitmap quality banding and dithering . Your image is JPEG so it doesn't have transparency..

Is it possible to dither a gradient drawable?

http://stackoverflow.com/questions/2791045/is-it-possible-to-dither-a-gradient-drawable

android angle 270 shape The problem is that I get severe banding on hdpi devices like the Nexus One and Droid since the gradient.. as it's noted in the official Android docs are for solving banding problems when the device has too small of a color palette. This.. has too small of a color palette. This seems to be a banding problem due to the size of the gradient. share improve this..

android:dither=“true” does not dither, what's wrong?

http://stackoverflow.com/questions/4769885/androiddither-true-does-not-dither-whats-wrong

a large color gradient does show up but with heavy color banding. From what I've learned from the SDK this can be mitigated by.. none of the suggested methods helped to get rid of color banding after reading this blog post from Romain Guy I had the idea.. actually seems to use RGB8888 as said in the post and the banding is gone also for 2.2 . Still wondering why the other methods..

Gradient appears banded in a SurfaceView, but looks very smooth in a normal View

http://stackoverflow.com/questions/7774867/gradient-appears-banded-in-a-surfaceview-but-looks-very-smooth-in-a-normal-view

gradient fill within a SurfaceView the gradient has colour banding. When drawing exactly the same rectangle with the same gradient.. colour as this was the solution in the past to eliminate banding in gradients however I believe that this is no longer necessary.. above and the normal View beneath. I realise that the banding is very subtle in this example it's even more apparent when..

OpenGL gradient banding on Android

http://stackoverflow.com/questions/8669765/opengl-gradient-banding-on-android

gradient banding on Android I've got a live wallpaper out on the market which.. though as you can see in this screen shot The color banding looks awful especially compared to this screen shot from an.. anyone confirm this suspicion Is there any solution to the banding android opengl es colors dithering share improve this question..

Android background image memory usage

http://stackoverflow.com/questions/13118005/android-background-image-memory-usage

resolution or to lower the channel format so far this is what I have done switched them to 565 RGB but this makes some banding problems which I cannot accept . I would also accept in case there's nothing that can be done an explanation of why this..

High resolution Image - OutOfMemoryError

http://stackoverflow.com/questions/18385362/high-resolution-image-outofmemoryerror

in comments. By default ARGB_8888 pixel format is used which means 4 bytes per pixel. Very good article Bitmap quality banding and dithering . Your image is JPEG so it doesn't have transparency so you are wasting 1 byte on every pixel for alpha channel...

Is it possible to dither a gradient drawable?

http://stackoverflow.com/questions/2791045/is-it-possible-to-dither-a-gradient-drawable

android endColor @color content_background_gradient_end android angle 270 shape The problem is that I get severe banding on hdpi devices like the Nexus One and Droid since the gradient goes from the top of the screen to the very bottom. According.. will actually solve your problem as dithering at least as it's noted in the official Android docs are for solving banding problems when the device has too small of a color palette. This seems to be a banding problem due to the size of the gradient...

android:dither=“true” does not dither, what's wrong?

http://stackoverflow.com/questions/4769885/androiddither-true-does-not-dither-whats-wrong

background.png in drawable hdpi. The image which includes a large color gradient does show up but with heavy color banding. From what I've learned from the SDK this can be mitigated by using the above proxy image definition together with specifying.. dithering working EDIT Uploaded the sources here EDIT2 After none of the suggested methods helped to get rid of color banding after reading this blog post from Romain Guy I had the idea to check whether my PNG background has an alpha channel. It.. has an alpha channel. It didn't. After adding one android actually seems to use RGB8888 as said in the post and the banding is gone also for 2.2 . Still wondering why the other methods didn't work. EDIT3 One has to make sure that the PNG not only..

Gradient appears banded in a SurfaceView, but looks very smooth in a normal View

http://stackoverflow.com/questions/7774867/gradient-appears-banded-in-a-surfaceview-but-looks-very-smooth-in-a-normal-view

is that when drawing a simple test image a rectangle with a gradient fill within a SurfaceView the gradient has colour banding. When drawing exactly the same rectangle with the same gradient in a simple extended View the gradient looks very smooth.. PixelFormat.RGBA_8888 to switch the Activity to 32 bit colour as this was the solution in the past to eliminate banding in gradients however I believe that this is no longer necessary at a certain Android level where 32 bit is the default ... getHeight paint Here is the screenshot showing the SurfaceView above and the normal View beneath. I realise that the banding is very subtle in this example it's even more apparent when the gradient sweeps over a smaller band of colours. Any suggestions..

OpenGL gradient banding on Android

http://stackoverflow.com/questions/8669765/opengl-gradient-banding-on-android

gradient banding on Android I've got a live wallpaper out on the market which uses OpenGL to render some basic shapes and a flat plane... Galaxy S2 series seems to have some trouble rendering the gradient though as you can see in this screen shot The color banding looks awful especially compared to this screen shot from an Incredible I'm using a 565 EGL config in both cases so I believe.. this is just a display issue with the GS2 devices. Can anyone confirm this suspicion Is there any solution to the banding android opengl es colors dithering share improve this question Can you confirm that though you request 565 that you..