GIMP :: Slow To Change Pixel Colors?

Jan 19, 2014

I have a 2013 Macbook Pro 15 with discrete graphics and plenty of RAM, so I cannot image the computer is to blame. I have 2.8.10. When using features like auto white balance it takes way too long to change the pixel colors. I have installed GIMP in parallels and it runs faster through the Windows application than it does directly on my Mac. Is this just the result of the mac build being not as refined? Is there a setting that I need to change? I have the Tile Cache on 8GB and number of processors on 8 (4 actual, 4 virtual).

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GIMP :: Cannot Change Image Pixel Dimensions From Print Size Dialogue

Dec 15, 2012

"Image > Print Size" really IS the command you are looking for.

The key is to pay attention to the units-of-measure shown on the Print Size dialogue box:- The "Width" and "Height" values under Print Size are displayed in real-world units (inches, mm, etc.), not image pixels.- The "Resolution" values are displayed in pixels-per-unit.- You cannot change your image's pixel dimensions (aka scale the image) from the Print Size dialogue. That's what the "Scale Image" command is for.Remember the relation between pixel and print sizes is:(print size) = (pixel size) / (print resolution)

When you change the image's print resolution, of course the real-world size (the "width" or "height" shown in the Print Size dialog) of your image will update to reflect the new print resolution -- that value is calculated from your image's actual pixel size and whatever resolution value you just entered. This is totally normal behavior -- in fact, it's expected. If you change an image's resolution from, say, 150 pixels/inch to 75 pixels/inch, this doubles the print size of your image but only the print size; the image's pixel size remains precisely the same as before. (You can confirm this by comparing "Image > Canvas Size..." before and after changing the resolution.)

And as others have stated, if you're using the image for Web viewing then its print resolution has absolutely zero effect on how it will appear onscreen (print resolution only affects, well, actual printing), in which case you'll want to use the "Scale Image" command to actually scale your image larger or smaller.

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GIMP :: Change A Range Of Colors To Another

May 14, 2012

Is there a way to change a range of colors to another. Let say I want to change a pic with different shades of red to blue. Which tool would do the trick?

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GIMP :: Change Colors On Picture

May 5, 2011

I have a picture that I like to change the colors on. I have attached the picture. I used the tool select by color which seemed to work but then the instructions I have found said to use the Color Exchange tool but that does not work.

[URL]..........

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GIMP :: How To Change Two Colors To Another Color

Feb 23, 2011

I made an image that has only two colors (not grayscale) only true black and true white. I want to know how to change these colors independently to whatever color. Basically what I did to this image was throw it in MS Paint and converted it to black and white.

How would I change these colors?

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GIMP :: Change Colors On Paint Brushes

Dec 16, 2013

I am using the paintbrushes and all I can get is black. How to you change the colors on the Paintbrushes? I have clicked on the "Color Options" in the Paintbrush toolbox but nothing happens.

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GIMP :: Change What Colors Make Up Image?

May 8, 2011

Any way to change what colors make up an image. I have a palette of 400+ colors that I'd like the image to be composed of but I can't find a way to convert it to only use those colors. Changing the mode to indexed mode doesn't work since you can only index 256 max colors.

Is there any plug-ins or tools I am missing that can do this? (Basically it will change every pixel in the image to the closest matching pixel from a large [400+ color] palette.

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GIMP :: How To Make Clean Image Without Deleting Pixel By Pixel

Mar 13, 2011

I managed to remove the background, of an image,(A whit background) and put the image on top of a transparent layer. made a transparent image. When I place this image over a light color background, it looks fine, but when I place it over a dark color background, the edge of the image looks very rough and dirty, I think it's because some of the anti alias from the original image, how can I make it a clean image without going to delete pixel by pixel?

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GIMP :: How Channel Mix Works Exactly For Transforming Pixel By Pixel In Java

Jul 26, 2012

We are developing an application using functionality of Gimp´s channel mixer with java.

Our problem is that we don’t Know how channel mix works exactly for transforming pixel by pixel in Java.

For example,

We have an image an do on it the next mix:

Output Channel = Red
Red=200.0
Green=0.0
Blue=0.0

For simulate that, we transform all pixels with Red Component *2 and 255 (maximum) if is greater.

Our problem is:

Output Channel = Red
Red=200.0
Green=60.0
Blue=0.0

How can I simulate that?

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GIMP :: How To Change All Non-white Colors On Image To Same Color

Feb 4, 2013

I have been trying (without much success) to figure out a way to change all non-white color elements on a picture to a single set color, and was wondering if that is possible to do in GIMP.

For example, I'd like to turn something like this tri-color Italian flag. To this, where the blue color is a color of my choosing.

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Photoshop :: How Do I Delete Certain Pixel Colors...

May 28, 2009

I'm using cs3 ext. I am looking to cut my body from the background. since my picture is blury because in this particualr frame my arm is moving, the pixels from my arm get intertangled with the black pixels in the background. I was wondering if there is a way to delete the black so that I will only have the tanned pixels (from my arm) show up with no black? I tried using magic wand but it only cuts AROUND my blury arm and does not delete the in between black pixels. there seems to be a lot of options I was thinking there must be some way to be more precise. maybe I can copy the black pixels with eye dropper and get it to delete all the black automatically leaving the lighter arm pixels in tact but I don't know how to do this.

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AutoCAD Visual LISP / AutoLISP :: Change Layer Colors To New Set Of Colors?

May 8, 2012

We are working with a company that will be sending us DWG files. They do not use the same layer colors as us and I am trying to find a lisp that would allow me to set up a table with the layer names and the color I want them to be so that I can quickly change all the layers to our companys color standards.

Example:

Layer 1 = Color 1
Layer 2 = Color 15
Layer 3 = Color 10
Etc.

I don't know a lot about lisp but I figure if I could find a lisp that did this I could plug in my layer/color assignments and it would work. 

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Photoshop :: How To Change Dpi Pixel Size

Mar 29, 2012

im working on a big poster 300 cm x 300 cm , so when i change the dpi, pixel size changes too...??

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GIMP :: Can't Get 1 Pixel Brush

Dec 11, 2013

this is probally the most noob question ever but I can't get a 1 pixel brush, 3x3 is the smallest brush I can get

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Photoshop :: How To Change The Pixel Size Of A Text Box

Jul 18, 2013

I am working on a banner for my Youtube channel, and I want the text to fill the safe text area needed for the banner.  Thing is, I don't know how to change the pixel dimensions of a text box. 

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AutoCAD .NET :: Change Units To Pixel Programmatically?

Oct 24, 2011

I'm using sendcommand to draw various shapes in autocad.

the problem is my application (wpf) uses pixel units while autocad uses inches by default.

how can I change autocad units to pixel programmatically?

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Photoshop :: Change Pixel Color In Gif File

Jul 28, 2004

I have a gif file and would like to change just the pixels that are of one RGB to another RGB. How can I do this?

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Paint.NET :: Change Every Pixel That Is Blue To Yellow?

Feb 17, 2014

Is there a plugin or something that will allow me to change all pixels that match a certain color value to another color value? So let's say I have a picture that has red, green and blue on it. And I want to change every pixel that is blue to yellow.

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GIMP :: How To Extract RGB Pixel Data From JPG

Dec 7, 2011

I am trying to take a jpg file of an image, and write each RGB pixel color's value into a 3 component integer vector corresponding to the RGB components of the color for that pixel. For each pixel in the jpg, I wish to write the corresponding 3 by 1 integer vector into a matrix after which I plan to do a SVD decomposition of the newly constructed matrix to do an image analysis.

Any plug-in that allows one to efficiently iterate through each pixel in a jpg, and convert the pixel data to a RGB integer vector, and say write to a file?

Specific Details: I am using gimp 2.6 as my image editor, and wish to collect all the RGB 3 by 1 integer vectors (where each 3 by 1 integer vector corresponds to RGB color of exactly one pixel in the jpg image) into a matrix of integer so that I can do a reduced SVD decomposition of that matrix to analyse the pixel data: I wish to compare two similar images by using the SVD decomposition of integer matrices corresponding to the two images saved as jpg files pic1.jpg and pic2.jpg.

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GIMP :: Edit One Pixel At Time?

Nov 24, 2013

I have a picture, I am looking to take one pixel of color and copy it nearby over another pixel. How do I do this? try to inform me about the exact brush and size I need to select as I cannot figure out the correct combo to do so.

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GIMP :: Reading Pixel Values?

Jun 20, 2012

I need to look at the pixel intensity of a gray scale image to write some code. I have used some trivial softwares like paintshop pro earlier where you can see the pixel intensity being displayed along with the co ordinates of the pixels as you slide your mouse pointer across. In Gimp 2.8 for windows, i can see the co ordinates but not the intensity. My image is a grayscale image.

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GIMP :: Pixel Intensity Across Specified Vector?

Jul 25, 2013

I have an image which i would like to measure the pixel intensity along a specific vector. I do not want the total pixel intensity for the entire image, i would like to draw a line, ie with the measurement tool and get a graph showing the pixel intensity as you travel along that line.

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Illustrator :: Why Does Pixel Size Of JPEG Change On Different Computer

Aug 5, 2013

I have a Mac OS X version 10.8.2 and Adobe Illustrator CS6.
 
When i save a file "for web" as a jpeg with a specific pixel size (320x50 for example) and then send it by email to someone, when they open it the dimensions somehow change. Even though on my mac when i "get info" from the jpeg the dimensions are correct.

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GIMP :: Pixel Art - Tracing Over A Layer Of Different Size

Jan 8, 2014

I am trying to do some pixel art. what i want to do is take my concept art which is pretty good size and make a video game sprite over the top of it. So i would need to have a background image which is large and a foreground that is WAY SMALLER but lines up with it.

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GIMP :: Reverse Y-axis And Pixel Coordinates

Mar 28, 2012

Is there a way to change the origin of the y-axis from the top to the bottom, with the positive being on top and negative on bottom?

Also, I notice that exact pixel coordinates are split down the center of the actual pixel. When I hover the mouse over a pixel, it will only show the correct coordinate of that pixel in the top left quadrant of that pixel. The attached picture represents a single pixel at (0,0). If I put the mouse over the red quadrant, I correctly get (0,0). If I put it over the Blue quadrants, I get (1,0) and (0,1). The Green displays as (1,1). This is rather inconvenient for me, as I'm working on pixel art, so I always have to make sure to mouse over the top left 1/4th of the pixel that I'm trying to find the coordinate of.

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GIMP :: Positioning Layers Exactly Using Pixel Coordinates

Sep 19, 2011

I'd like to accomplish:

Having a single color background with multiple thin vertical layers that will be equal distance apart, thus giving a striped look. Unfortunately, I'm having trouble positioning the layer exactly using pixel coordinates. I'm not even sure if that can be done.

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GIMP :: 1 Pixel Wide Line With Feathering

Jun 12, 2012

I'm trying to create 1 pixel wide borders for some web buttons. I've tried to use the GIMP path tool to do this but I can't figure out how to get it looking right. See attached image.

1 - copied from a button I found on a web-page. This is what I want - single pixel horizontal and vertical lines with feathering on the curved bits.

2 - path that I used to generate the images on the right.

3 - 'Stroke Path' with 1px brush size & no antialiasing. Corners are not smooth.

4 - 'Stroke Path' with 1px brush size & anti-aliasing. Straight lines are too fuzzy as they are 2 pixel wide rather than 1.

Is there a way to do this with the path tool or any other way with the GIMP?

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GIMP :: Pixel Aspect Ratio For Video?

Jun 1, 2011

Due to that nature of Video, which I work in, pixels are shaped differently for televisions than they are for computers or print. Standard Deffinition is 720x480 pixels yet you can get the pixel aspect ratio in 4:3 or widescreen which is 16:9 yet it is still considered 720x480 pixels. Is there a way to compensate for this? I author DVDs for clients and would like to use GIMP to create menus for the DVDs. I can start a PSD in Adobe Encore CS4, save it as a PSD, open it in GIMP and work in more detail there yet when I save it from GIMP and open it back up in Encore, because of the pixel aspect ratio, the size of the image and menu is stuck at 4:3. Can I save 720x480 pixels in the 16:9 format or do I need to just change the pixels?

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Photoshop :: Save For Web In Action - Change Output To Pixel Width

Jan 28, 2013

We do hundreds of images for our main client for print purposes. As part of the work, they want all of the final images run through Save for Web saved as both a .jpg and .png file at 1000 pixels wide.
 
The problem is, if you try to create an action for this, the size the action saves is a percentage and not a pixel width. So it's impossible (so it seems) to save an action that sets the scale as a proportional resize with a fixed output of 1000 pixels wide. Since all of the images vary in size and it insists on saving the size as a percentage, you can't create an action that will work.
 
I've tried to see if there's a way to modify the action to change the output to a pixel width, but can't see how to do it. Is this even possible? It would save us TONS of work not having to manually open each image twice and saving for each format.

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Photoshop Elements :: How To Resize JPEG And Change Pixel Size

Feb 5, 2014

I am using Elements 9 and have used Elements since V5.  Today I tried to re-size a jpeg and the program would not let me change the pixel size.

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GIMP :: Creating Image (GIF) By Drawing At Pixel Level

Nov 14, 2012

I am using Gimp 2.8.0 but only understand about 5% or less of it. (It is running on Win.7 Hm. Prm., Vsn 6.1, Sp-1.)

How can I define or adjust the pencil tool so it draws at the one pixel size in a new ".gif" work area. (That would be one pixel in the image to one pixel on the screen.) I found how to define the work area in pixels for a ".gif". The predefined pencil tool sizes (chosen by assorted dots) "went away" several versions of Gimp back as far as I know.

The object of this effort is to produce "TrainGifs" for use in other applications. Should you be interested just Google "TrainGifs" and you will be able to check out multiple site for this hobby.

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