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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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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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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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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Nov 5, 2012
When using "pixel units" the position and sizes are reported rounded to the nearest pixel.
The two squares below are both reported as 2 pixels square. One is actually 1.5 pixels square:
can the pixel coordinates and sizes not be rounded?
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Oct 20, 2013
There's a box, I've set it to 0,0 coords, but it will not stick to the top of the artboard. I've tried align to pixel grid on and off (It would not move off 0.318px when I had align pixel grid on, which confused me too!). When I turn align to pixel grid off the box stays closer to the top, BUT when I export for web it sticks a white line in at the very top of the artwork.
I'm on a macbook pro, retina.
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Aug 25, 2010
Is it possible to automatically project the x-axis, z-axis or z-axis onto the sketch plane?
I.e. every time you open a new sketch the corresponding lateral and vertical axis will be projected onto the sketch.
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Aug 18, 2013
I'm making a multiple monitor panorama and need to reverse the halves of the large image - 3840x1200 since my primary monitor is on the right.
So I can precisely select the parts I want since Select Rectangle has a precise mode in the tool options.But move has no precise mode.
Don't we need a precise mode in the Move tool too?
Not sure where to pass this along to the Gimpers, but it's the only thing I've found missing.
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Feb 17, 2011
I see the reverse layers option, I use that when I save and export it as a gif.
The gif becomes all grainy and white when it started out and you can see the layers from before still showing while the other layers are playing.
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Aug 12, 2012
Is there a way to take a flattened image and reverse that so you can manipulate the layers? Photoshop allows it.
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Jun 27, 2012
Is there a way in gimp to rotate a 2D image (e.g. BMW%20M3%20-%202002%20-%2003.jpg) about the Y Axis? I tried GMIC but that rotates the layer in 3D. I would like to create a view of the front of the car or any any in between.
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Oct 29, 2013
Is there a way to restrict tool movement along a single (horizontal or vertical) axis? I'm not talking about moving objects - as I checked and there's a thread for that - but moving those little squares in the corners of a transform tool selection.Example: I want to change the perspective of a picture. I apply the perspective tool and the picture is overlaid with a grid and four corners. I want to be able to pick a corner - say the bottom right one - and move it *only* right or left, without any vertical shift.
I tried with guidelines but I cannot make them stick to the exact side of the image neither if I tell GIMP they're magnetic.But what's worst is that even if I manually put guides along the edge, it seems that the corners of the perspective tool ignore completely the magnetic attribute.
In Photoshop I could simply pick one corner, hold the shift key and restrict movement to the two main axes.
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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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Mar 25, 2013
i try to make an animation. I create a cylinder and i want to rotate it by longitudinal axis. i click 'components', select the cylinder and after i click 'position' to select the axis that axis system appears in the right side of the cylinder not in the middle. If i continue whit this settings the cylinder will rotate by a circle not by his longitudinal axis. How can i move that axis sistem in the middle of the cylinder? I can drag it but can't place it exactly in the middle.
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Jan 25, 2013
I'm rigging a shoulder pad to a biped and I'd like it to only rotate on one axis. Google hasn't been that useful, and I hope I don't need scripting for this kind of minor thing. I'm rather new to 3Ds Max Design but I'm learning fast and liking it so far!
I've attached what I want to effectively accomplish. I'm looking for a way to lock the z-axis of the object with the upper arm's z-axis.
EDIT: Reduced picture size.
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Oct 7, 2013
Is there any way I can extract the rotation of a block relative to the yz axis and xy axis. I can extract the insertion point and xy rotation but not the yz and xz.
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Nov 11, 2013
Is it possible to create a straight line by using coordinates instead of left clicking on a specific point(my hands are just to shaky when using a mouse to get the exact coordinate) then holding shift and then taking forever trying to get that perfect end point pixel location.
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May 28, 2012
Is there any way of setting up an automated process/es? What I want to try to achieve is to move a layer incrementally along an axis,by say a few pixels at a time,whilst saving the frame generated,up to say 20 frames or more ?
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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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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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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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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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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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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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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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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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Jan 22, 2013
Is there any way to export coordinates of a point created using the paths tool? I'm trying to determine the distance of each of the points in the attached picture from the blue mid line.
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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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Jun 17, 2012
I have spent hours trying to do this simple task in Gimp without luck. What I'm looking for is the border effect (without outer shadow) seen in the three embedded screenshots in this image: [URL]
In inkscape it's a matter of adding a square on top of the image with identical dimensions and making the stroke colour semitransparent and the fill colour completely transparent, but image quality suffers badly when exporting from svg to png or jpg again, and I'd prefer doing it in Gimp.
So, take image, say 100 by 100, add 1 pixel inner transparent border - how? I have seen this effect enough to suspect it's a filter option but haven't found anything in my filters.
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Feb 3, 2014
I have some picture look like a line of graph, but it has only one-pixel line width (for an example in attach file) and it can't be seen when I put it in presentation slide. So I want to make line thicker, like 3-5 pixel width. How can I do this?
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May 23, 2011
In gimp, some things are confusing. like the shear/skew tool, isometrics/pixel grids, and selecting objects.
Is there a way to skew a circle for isometric pixel art (30 degrees)? Does gimp have a isometric/pixel grid? (there's a regular grid, but its not isometric)
when selecting an object, is there a way to select it without using float every time? Lastly, is there a way to constrain a line to the 3 most used isometric lines used in isometric pixel art? (shift works, but its hit or miss)
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