Color range

hi there,
may i know how to create a method that can be called and used to calculate the value of 2 pixels?
for example, first pixel is yellow, second pixel is light yellow.
the method is used to return true or false.
something like:
checkDifference(pixel1, pixel2)
if the second pixel is within 5 steps from the first pixel, then the method returns false.
if the second pixel is more than 5 steps from the first pixel, then the method returns true.
what i mean by steps is this,
light yellow has the color code FFFF99
yellow has the color code FFFF66
a darker yellow has the code FFFF33
so light yellow is 2 steps from the dark yellow.
hope you guys get what i mean.
thanks in advance for any replies.

ok lets say i already stored the image pixels into an int array.
how do i get the red, green blue int values of each pixel from the array?

Similar Messages

Select- Color Range- Results in Blue Screen (PC) (driver out of date)

I've been using the CS6 beta about two days. While experimenting with color range I experienced two consecutive blue screen crashes. The first time it happened,I was working with the color range selector and was replacing the selected areas with another color using the paint bucket. About the third time I attempted this, my PC blue screened. The second time, I opened a photo, went to Select>Color Range and got an immediate blue screen crash.
I then went back to CS5 and I've been playing with the same scenario with no apparent problems.
My PC is a store built computer. It consists of an MSI 990-FXA GD80 motherboard, an AMD Phenom 1100t CPU, Asus GTX550 Ti graphics card and 8 gig of RAM. It boots from a 60 gig SSD and my programs reside on a 500 gig hard drive. The OS is Windows 7 Professional 64 bit. CS6 is using the hard drive for its scratch disk and Photoshop is using 4339 mb of the 7232 mb of available RAM - I haven't changed that. I'm running CS6 as administrator because the way it installed, it would only run in that fashion.
One disappointment during the installation was CS6 made no attempt to read my preferences from the CS5 install. That may be covered in another post, I've not yet looked.
Please keep us informed as new betas are released, because I would like some time to work with this puppy before plunking down big bux for the upgrade. As it is now, I'm going back to CS5. I get mighty nervous when my super computer blue screens!
Gerry
gswetsky AT bellsouth DOT net

The GPU is often at root of issues like yours. I've had so many problems with Nvidia drivers for their gaming-oriented adapters (like yours) that I finally went with one of their workstation cards. I have a Quadro card with just enough RAM to make Photoshop happy. The workstation drivers are optimized for reliability, the consumer card drivers are optimized for gaming and that often means they're less stable and reliable with Photoshop.

Color Range command in Photoshop CS6 13.0.4 no longer works after update

I just updated to 13.0.4 at the end of last week. Today I went to use the Color Range command and it will not select any colors. The Eyedropper tool works fine. Adjusting the fuzziness and other options doesn't make a difference. Nor does selecting multiple instances of a color to add to the selection. Since I use this command regularly, I feel confident that it is a bug with the update and I would love to hear of any possible fixes. Or, is it possible to downgrade back to 13.0.3? I didn't realize how much I used this and it's a major inconvenience.

I feel confident that it is a bug with the update and I would love to hear of any possible fixes.
Some people, when encountering unexpected behaviour in Photoshop, seem overly prone to use the term »bug«.
Have you performed the usual trouble-shooting routines (trashing prefs by keeping command-alt-shift/ctrl-alt-shift pressed while starting Photoshop after making sure all customized presets like Actions, Patterns, Brushes etc. have been saved and making a note of the Preferences you’ve changed, 3rd party plug-ins deactivation, system maintenance, cleaning caches, font validation, etc.)?
Could you please post a screenshot with the pertinent Panels and Dialogs visible?

Color Range doesn't work correctly with latest update

as the title suggests, I'm having difficulty using the color range tool properly. It worked perfect just before the most recent update (13.1) and now works very strangely.
It seems to select whatever color it feels like except the one I need. And then it is very very selective if it will even select anything at all. I'm not sure how else to explain this so it is clearer and easier to be understood. I will post the System Info from Photoshop below.
Adobe Photoshop Version: 13.1 (13.1 20121126.r.220 2012/11/26:23:00:00) x64
Operating System: Windows 7 64-bit
Version: 6.1 Service Pack 1
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Physical processor count: 2
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Processor speed: 4551 MHz
Built-in memory: 16330 MB
Free memory: 9473 MB
Memory available to Photoshop: 14677 MB
Memory used by Photoshop: 74 %
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OpenGL Version: 3.0
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OpenGL Memory: 1024 MB
Video Card Vendor: ATI Technologies Inc.
Video Card Renderer: AMD Radeon HD 7700 Series
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Display: 1
Display Bounds: top=0, left=0, bottom=1080, right=1920
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Driver Date: 20120611000000.000000-000
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Possibly you are missing something in the way you apply this command. Here's how I use it to select patchy clouds with ragged edges and continuously varying shades of gray:
Select the eyedropper tool on the Toolbar and on the options bar set the sample size to 3x3.
Activate the Color Range command. Activate the "selection" radio button and choose "none" in the selection preview. In the "select" box, choose "sampled colors".
Set a trial fuzziness of,say,50. Click with the eyedropper on a point in the midst of the color you want to select. That's your "base" color.
Then switch to the "Color Added" (plus) eyedropper, holding the left mouse button down while dragging it over areas deviating from the base color but which you want included.
If there are non-contiguous areas with still different colors you also want to include, release the mouse and move the cursor to those areas before dragging again.
All the while, keep an eye on the dialog box display which shows what you've selected, albeit crudely. If you pick up unwanted colors, switch to the "subtract from sample" (minus) eyedropper and drag it over those areas.
When you think you've got it about right, experiment with the fuzziness slider to see if you can improve things by increasing or decreasing fuzziness.
Don't re-use the plain eyedropper unless you want to start all over again. Optionally, instead of switching among the 3 eyedroppers, you can activate only the plain eyedropper but use it with SHIFT to add or ALT to subtract.

How do I select a color range like in Photoshop OR copy/move a layer into the mask of another layer?

Hi there,
I'm trialling Photoshop Elements and wanting to use a black and white (grey scale) layer that I've made as a mask in another layer and don't know how to do it in Elements. In Photoshop, I'd do this (there maybe a better way in PS to do it, but I haven't discovered it yet)...
Click the layer i've created that I intend to use as a mask
Select All
Copy
select layer that I want the mask to be applied to
click the Add Layer Mask button (at the bottom of the Layers window)
click the mask icon so it is highlighted (and the image isn't)
switch to Channels view
highlith the Layer Mask beneath the R,G,B layers and make it visible
Paste
make it invisible again
switch back to layers.
This works and retains the full range of transparency for semi transparency and soft edges of the mask etc.
Alternatively, I can select a Color Range, but that doesn't seem to be available in PS Elements.
So, how do I achieve the same result in PS Elements?
Thanks for your help
Jonno

Perfect! Thanks very much R_Kelly. That does exactly what I was hoping to do.
Cheers
Jonno

Color Range doesn't work properly in CS3

Hi there,
I have a problem with CS3. Since a few weeks I can't use properly "Colour Range" feature.
Especially for bright colour the Colour Range doesn't select what I want to select. For example I want to select a bright cloud and can't select it with Colour Range. Of course I checked if there is any information or I have a burn area.
I use several different setting but I still have the problem.
I used 8/16 bit, Adobe RGB/sRGB
At Colour Range I use:
- Sampled colours
- Selection
- Fuzziness: how much I need it
- Selection preview: None
I need help...
Thanks

Possibly you are missing something in the way you apply this command. Here's how I use it to select patchy clouds with ragged edges and continuously varying shades of gray:
Select the eyedropper tool on the Toolbar and on the options bar set the sample size to 3x3.
Activate the Color Range command. Activate the "selection" radio button and choose "none" in the selection preview. In the "select" box, choose "sampled colors".
Set a trial fuzziness of,say,50. Click with the eyedropper on a point in the midst of the color you want to select. That's your "base" color.
Then switch to the "Color Added" (plus) eyedropper, holding the left mouse button down while dragging it over areas deviating from the base color but which you want included.
If there are non-contiguous areas with still different colors you also want to include, release the mouse and move the cursor to those areas before dragging again.
All the while, keep an eye on the dialog box display which shows what you've selected, albeit crudely. If you pick up unwanted colors, switch to the "subtract from sample" (minus) eyedropper and drag it over those areas.
When you think you've got it about right, experiment with the fuzziness slider to see if you can improve things by increasing or decreasing fuzziness.
Don't re-use the plain eyedropper unless you want to start all over again. Optionally, instead of switching among the 3 eyedroppers, you can activate only the plain eyedropper but use it with SHIFT to add or ALT to subtract.

Color Range "Local Group"

Hello together,
I just wonder what the new feature within the Select: Color Range Dialogue means.
I'm using the german version, so I don't know how it's named in english, but it should be something like "local colorgroup". It's the only new feature in this dialogue.
So, what exactly does this feature? i tried for some time but I can't figure.
As far as I thought in the beginning I can reduce the selected color values a bit more smooth in adition to the tolerance-bar.
But than, sometimes, after checking the box for this feature, my selection gets twice as big as it was before?
Can anyone help me out of my misery. :)
Thanks a lot
Philip

From what I can tell, it seems that the function will be more tolerant the closer it is to the click point.
In other words, it's kinda of like a radial gradient spanning out from the point that you click. It will select more for the area closer to the click point and gradually less as it moves away.
This may or may not be what it does, this is just what I have found from fooling around with it.

Is there a color range function in PSE

I have used photoshop CS4 and been comfortable using the color range function. I have tested PSE which I am thinking of buying as it is more affordable, however could not find the color range. Is there a similar function or is it got a different name in PSE? I mainly use this for jewellery and to change backgrounds.
Thnaks for your time and feedback.
http://www.goldstonesilver.com

Terri, thanks a lot for your reply, very helpful. I had CS3 but not anymore....so I ahve to make
do with elements for the time being.
Cheers

Photoshop CC crashes when selecting "Color Range"

Hi, my Photoshop CC crashes whenever I click on "Color Range" under "Select". It shows "Photoshop CC has stopped working".
It seems like no one I know can fix my problem. Can any kind souls out there who could advise if it's due to certain of my PC configurations, and how I could resolve this issue?
Thanks a million for reading!!

We can't know. You have not provided any system information or details about your document. Quite likely you simply have color profile or hardware acceleration issues, so update your graphics driver.
Mylenium

Select Color Range, fails v13.1.1 on Retina Display Mac

Is there a trick to getting the new Color Range selection function to work on a retina Mac Book Pro?
I am quite familiar with the color range selection in the previous version of Photoshop, and used it regularly. I've decided to try as simply as possible by using a flat image (no layers), and trying to select colors. I've increased the contrast in the image to make darks and lights much easier to pull out.
I've explored setting the sample size to point-sample up to 3x3, and 5x5. I've also set the resolution of my display to 2880 x 1800 (to reduce the possiblility of anti-aliasing problems).
It will not make any selection though, using the eye-dropper sample.
Using other options will work, such as Highlights, Shadows, Skin Tones, etc., but it won't do anything with Sampled Colors.

SO very glad I'm not the only one with this seemingly EXACT same issue.
System:
Photoshop CS6 via Creative Cloud membership.
Windows 7 Home Premium
16GB Ram
Issue:
Select > Color Range used to work perfectly before update 13.1.1
Now since the update 13.1.1 Color Range doesn't do jack properly. Selecting any color doesn't do anything. sometimes if I select a white it will act as though I've pulled out a gray.. but even one pixel difference will make it deselect. This only happens with Sampled Colors. All otehr color range preselections work as advertised. This would be great if I didn't need the precision afforded to me with Sampled Colors. This is mission critical to my daily work as a scren printing artist and have been unable to find a succesful workaround.
Is there at least a way (without having to uninstall/reinstall) to downgrade back to 13.0.x until this bug is found and fixed?

Mask- color range sometime crash , did it happen to you?

Hi
i run photoshop cs5 under w7 32bit ultimate
sometime when i select a mask , mask palete -> color range photoshop stops to work and give me an error
did it happen to you?
is there a cure?
thanks
cheers

This has been happening to me today only. I have been using this program for about a year now. Today I duplicated a layer, went to select at the top, and selected "Select Color". I selected a lot, most of the image, then when I clicked "Okay" it crashed. I did this several times and it persists. I remembered to copy the error thingy one time and it was this:
Problem signature:
Problem Event Name:                        APPCRASH
Application Name:                             Photoshop.exe
Application Version:                           12.0.0.0
Application Timestamp:                     4bbc5b10
Fault Module Name:                          MMXCore.8BX
Fault Module Version:                        12.0.0.0
Fault Module Timestamp:                  4bbc6013
Exception Code:                                  c0000005
Exception Offset:                                000000000002616a
OS Version:                                          6.0.6002.2.2.0.768.3
Locale ID:                                             1033
Additional Information 1:                  6e28
Additional Information 2:                  60c89792d861b06d6249963314831187
Additional Information 3:                  b098
Additional Information 4:                  a86d8e801a11949dbe1113ebd4726171
Files that help describe the problem:
C:\Users\Administrator\AppData\Local\Temp\WER3D6E.tmp.version.txt
C:\Users\Administrator\AppData\Local\Temp\WERBA11.tmp.appcompat.txt
C:\Users\Administrator\AppData\Local\Temp\WERBD2F.tmp.mdmp
I don't have any plug-ins and when I went to look at the files listed, I opened WER3D6E.tmp.version.txt. But when I closed it, neither it nor the other two were there. I'm guessing the .tmp means they're temporary and I was only able to open that one because I did it so soon after the crash? Anyway, I came to these forums and saw something about MM fonts - I don't have any. I also saw people with this problem - color select. So, I opened CS5, duplicated the layer and before I could click "Select", it crashed. I forgot to get the report    but I got this:
Files that help describe the problem:
C:\Users\Administrator\AppData\Local\Temp\WER2C1F.tmp.version.txt
C:\Users\Administrator\AppData\Local\Temp\WER50A0.tmp.appcompat.txt
C:\Users\Administrator\AppData\Local\Temp\WER50EF.tmp.mdmp
Any help would be great!

Color Range option in Photoshop Elements 10

I tried to search "Color Range" option in Photohop Elements 10 but i could not able to find it.
Let me know, if any one could find it.
Thanks,
sandeep

Photoshop elements 10 doesn't have Select>Color Range like the full version of photoshop cs6 does.

Photoshop CS3 Color Range Problem

I am having an issue with the color range selection tool in Photoshop CS3 on an iMac G5 running Snow Leopard.
I've been using this tool for years and it's always worked properly until now. It no longer selects the color I've picked with the eyedropper. The only time it works properly is when I set the image to grayscale mode. In any other mode, it selects erratically, like the image below. Those are clean rectangles I created with the paint bucket, so I'm not sure where the lines selected in the Color Range view are coming from. Adjusting
"Fuzziness" doesn't help. The image is set to 8bits. Any ideas?
I've tried using the color range on another computer with the same settings and it works fine.

Is the Eyedropper Tool set to Current Layer in the Options Bar?
If nothing else helps you can always try trashing the prefs (after making sure all customized presets like Actions, Patterns, Brushes etc. have been saved and making a note of the Preferences you’ve changed).

PS CS5: select color range not working properly

The color range is a grate command but it doesn't work properly when dragging the eye dropper across the image. This is especially noticeable with a low range value. When you start the selection (without pressing the shift key) and drag across the image only the end point is selected instead of the whole trace. Second, when dragging with the shift key pressed not the trace is added to the selection but a rectangular area. You can easily try this out by creating any one color image and lower the range value to about 5.
In my opinion this is a bug or am I missing something?

Hello,
When you start the selection (without pressing the shift key) and drag across the image only the end point is selected instead of the whole trace.
This behavior is as designed. When you make a selection without holding the shift key, and you have the first eyedropper selected in the menu (the one that doesn't have a plus or minus sign) you are a making an initial selection on the image. If you hold and drag this selection, it will just change the initial selection to match whatever destination you prefer on the image.
Second, when dragging with the shift key pressed not the trace is added to the selection but a rectangular area.
I can reproduce this behavior, too. I believe this is also as designed, because the range is too small to make an organic looking selection. I think the more standard workflow is to start with the range high (100%), make the selection of the localized color area you want to mask, and then reduce the range value as needed.
Color Range isn't terribly intuitive to me, but it can be a powerful selection tool. Photoshop Evangelist Russell Brown has a really good tutorial on Adobe TV about using color range. Have you seen this before?
http://tv.adobe.com/watch/the-russell-brown-show/the-secret-life-of-color-range/
Hope this helps!

Adobe is charging extra to access full color range of Pantone inks

I pay the professional fee of nearly $60. per month (in perpetuity, at least till the price goes up) for my Creative Cloud subscription. It takes me months to learn all the new bits and pieces of each new function and revised functions of InDesign, Photoshop, Illustrator, Dreamweaver and Acrobat overtime they update. This is very costly.
Now, I spent hours trying to assign a Pantone ink color from my Pantone book to a new logo last Sunday only to find I need to pay additional to Adobe to access the new colors in the Pantone books I purchased this year (I loyally replace my books every few years to be sure my colors are accurate). Pantone ink colors are necessary to a print designer's repertoire. I show these colors to clients so they see exactly what they ill be getting. I find it outrageous that Adobe is trying to squeeze yet more money for something that is so essential to professionals that it should be included without extra work or extra money.

At the bottom of the color range dialog box, there is a drop down menu. Select "None" rather than grayscale.

Giving a component with incremental color range in CSS

Is there a way to use the
background-color : #E6E5E5 to #F0F0F0 ;
which fills my component from #E6E5E5 then incrementing till #F0F0F0.
i can achieve this using a similar type image as background,
but i need to know is that possible in CSS.
Pls help me out with related discussion or topics.

Hi!
If I want to do a selection through color range using selection with highlight tones for example i can't control the tolerance.
I'm using the 14.0 x64 Photoshop CC version on a mac. Scripts are not the point really. See my screenshot (sorry its in french!) i can't control anything.

Color range

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