art techniques for eliminating banding

D
Posted By
DM
Dec 18, 2008
Views
745
Replies
11
Status
Closed
Hi,

I’m looking for different techniques used to eliminate banding. The most common ones are adding noise and rendering at higher bit depths for gradients etc. What else do you recommend? I’m interested in general ideas not specific instructions. Thanks.

Dawid Michalczyk

_DMEW_ Abstract art
http://www.art.eonworks.com/gallery/abstract/abstract_galler y_1.html

How to Improve Photoshop Performance

Learn how to optimize Photoshop for maximum speed, troubleshoot common issues, and keep your projects organized so that you can work faster than ever before!

R
Rick
Dec 18, 2008
"Dawid Michalczyk" wrote in message
Hi,

I’m looking for different techniques used to eliminate banding. The most common ones are adding noise and rendering at higher bit depths for gradients etc. What else do you recommend? I’m interested in general ideas not specific instructions. Thanks.

Dawid Michalczyk

_DMEW_ Abstract art
http://www.art.eonworks.com/gallery/abstract/abstract_galler y_1.html

What type of banding you mean.

Do you mean colour banding?
http://media.arstechnica.com/news.media/Colour_banding_examp le01.png

Or high ISO banding (on the left/middle)?
http://www.flickr.com/photos/patrickmayon/2921459634/

I am assuming you mean colour banding. I have heard of the technique you mentioned, but can’t for the life of me remember where. From memory this was a technique used by Ben Willmore.
R
ronviers
Dec 18, 2008
On Dec 18, 6:00 am, Dawid Michalczyk wrote:
Hi,

I’m looking for different techniques used to eliminate banding. Dawid Michalczyk

_DMEW_  Abstract arthttp://www.art.eonworks.com/gallery/abstract/abstract_gal lery_1.html

Are the bands more in the reflections or from the surfaces? Some things you might try.
Increase the brightness of the colors and decrease the brightness of the scene.
Decrease the contrast of the bump map or change its height in the renderer – try using a high pass filter on it.
Choose colors that are closer together.
Try lighting with a different environment map.
Blur your reflection map.
Increase the number of anti-aliasing samples.
CS
clayton.storey
Dec 19, 2008
Hi Dawid – I’ve never experienced banding in any print jobs, and I use gradients all the time. I have heard of doing the gradients in Photoshop though, then taking them into InDesign as an image.


CL8’N.
JJ
John J
Dec 19, 2008
On Dec 18, 6:00 am, Dawid Michalczyk wrote:

I’m looking for different techniques used to eliminate banding. Dawid Michalczyk

I’m fairly sure you mean banding on the print – it is caused by the printer. First do the necessary drill of cleaning and calibrating the head, however rarely works to cure banding, so your next question might be whether you should get a new and better printer or contract the printing out.
F
Fred
Dec 19, 2008
Hi,

I’m looking for different techniques used to eliminate banding. The most common ones are adding noise and rendering at higher bit depths for gradients etc. What else do you recommend? I’m interested in general ideas not specific instructions. Thanks.

Dawid Michalczyk

_DMEW_ Abstract art
http://www.art.eonworks.com/gallery/abstract/abstract_galler y_1.html

A technique I often use:

take a look at the RGB channels (channels panel)
find out which channel has the most noise/artifacts
very often this will be the blue channel
run a median filter (1-2) on the channel.

good luck!
OA
Old and Grunpy
Dec 19, 2008
It would be nice if you describe is a bending on monitor display or is it bending after you printed.

"Fred" wrote in message
Hi,

I’m looking for different techniques used to eliminate banding. The most common ones are adding noise and rendering at higher bit depths for gradients etc. What else do you recommend? I’m interested in general ideas not specific instructions. Thanks.

Dawid Michalczyk

_DMEW_ Abstract art
http://www.art.eonworks.com/gallery/abstract/abstract_galler y_1.html

A technique I often use:

take a look at the RGB channels (channels panel)
find out which channel has the most noise/artifacts
very often this will be the blue channel
run a median filter (1-2) on the channel.

good luck!
D
DM
Dec 20, 2008
Dawid Michalczyk wrote:
Hi,

I’m looking for different techniques used to eliminate banding. The most common ones are adding noise and rendering at higher bit depths for gradients etc. What else do you recommend? I’m interested in general ideas not specific instructions. Thanks.

To be more specific I’m talking about color banding (not bending) of colors on screen (not in print). Here is a description of what banding is with an example:

http://en.wikipedia.org/wiki/Color_banding

Color banding can often be a problem even with 32bit rendering. As I wrote, I’m interested in the less common techniques used to eliminate it.

Dawid Michalczyk

_DMEW_ Abstract art
http://www.art.eonworks.com/gallery/abstract/abstract_galler y_1.html
JJ
John J
Dec 20, 2008
Dawid Michalczyk wrote:
Dawid Michalczyk wrote:
Hi,

I’m looking for different techniques used to eliminate banding. The most common ones are adding noise and rendering at higher bit depths for gradients etc. What else do you recommend? I’m interested in general ideas not specific instructions. Thanks.

To be more specific I’m talking about color banding (not bending) of colors on screen (not in print). Here is a description of what banding is with an example:

http://en.wikipedia.org/wiki/Color_banding

I’ve not experienced it myself in the past several years.
S
steggy
Dec 21, 2008
John J schreef:
Dawid Michalczyk wrote:
Dawid Michalczyk wrote:
Hi,

I’m looking for different techniques used to eliminate banding. The most common ones are adding noise and rendering at higher bit depths for gradients etc. What else do you recommend? I’m interested in general ideas not specific instructions. Thanks.

To be more specific I’m talking about color banding (not bending) of colors on screen (not in print). Here is a description of what banding is with an example:

http://en.wikipedia.org/wiki/Color_banding

I’ve not experienced it myself in the past several years.

Loads of years, it seems it has more to do with screen-quality…and that is a very hard thing to overcome.
M
mike
Dec 21, 2008
In article , says…
Dawid Michalczyk wrote:
Hi,

I’m looking for different techniques used to eliminate banding. The most common ones are adding noise and rendering at higher bit depths for gradients etc. What else do you recommend? I’m interested in general ideas not specific instructions. Thanks.

To be more specific I’m talking about color banding (not bending) of colors on screen (not in print). Here is a description of what banding is with an example:

http://en.wikipedia.org/wiki/Color_banding

Color banding can often be a problem even with 32bit rendering. As I wrote, I’m interested in the less common techniques used to eliminate it.
Dawid Michalczyk
I had a similar problem with an Illustrator image a couple of years ago, where I had a series of blends and gradients between two fairly similar golours. It looked OK on the screen but banded horribly when I printed from Illustrator. Solved the problem by exporting a fairly high resolution bitmap image and then printing that (was OK as a one-off solution, but wouldn’t want to do it every time). The problem was only apparent when the end colours of the blend/gradient were _fairly_ similar in hue, saturation and/or value.

Mike
R
Rick
Dec 23, 2008
"Dawid Michalczyk" wrote in message
Dawid Michalczyk wrote:

Hi,

I’m looking for different techniques used to eliminate banding. The most common ones are adding noise and rendering at higher bit depths for gradients etc. What else do you recommend? I’m interested in general ideas not specific instructions. Thanks.

To be more specific I’m talking about color banding (not bending) of colors on screen (not in print). Here is a description of what banding is with an example:

http://en.wikipedia.org/wiki/Color_banding

Color banding can often be a problem even with 32bit rendering. As I wrote, I’m interested in the less common techniques used to eliminate it.

Obviously, the higher bit depth of the original file, the more shades you have and therefore less chance of posterisation when editing.

It’s not something I have had a problem with myself, but as others have suggested that it could be your monitor or printer, I would look at the histogram. What does the histogram look like (Note; If there’s a warning triangle in the upper right of the histogram, click this first to refresh the histogram more accurately)? Can you see gaps indicating posterisation?

As mentioned, I have heard of adding noise to reduce posterisation. Ben Wilmore has another technique in his book, which involves using the magic wand tool, modify border and gausian blur. Never tried it myself though.

MacBook Pro 16” Mockups 🔥

– in 4 materials (clay versions included)

– 12 scenes

– 48 MacBook Pro 16″ mockups

– 6000 x 4500 px

Related Discussion Topics

Nice and short text about related topics in discussion sections