Photoshop :: Esoteric Gaussian Noise
Jun 22, 2009
I'm using photoshop for vision research and am applying gaussian noise to black backgrounds using Filter -->Add noise --> Gaussian 20%. In CS2 a new random noise pattern would be generated each time I added noise to a different black background -- and this what I needed. But in CS3 & CS4, the same noise pattern is generated every time, and I need to have it generating different noise patterns. Is there a switch I'm missing or is this just something that was changed in CS3 and CS4? This issue occurs on my Mac and Windows CS3 and Vista CS4 machines.
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Oct 11, 2012
I am having difficulty with Gaussian Blur. I created a selection outline in an image and then filled it with black. I then selected Gaussian Blurr from the Filter Menu a set the radius to 100 and then deselected my previous selection.
In CS5 the edges faded into the background image however in CS6 the outline of the previous selection was still visible and the Gaussian Blur did not blend the selection as expected. Even ramping the radius up did not solve the issue as the outline still remained visible. how do i resolve this issue in CS6?
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Sep 17, 2007
To use Gaussian Blur as an example, how do I apply a Gaussian Blur to Text? I read in a book that I needed to Rasterize the Text but even that didn't work. I almost think my Blur is broken. I appreciate any help I can get.
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May 2, 2013
the last few days the gaussian blur plugin does not work in Adobe Photoshop CS3.
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Nov 11, 2010
We just got brand new systems at work less than a month ago and this event has happened twice since then. When using Photoshop CS5 Extended and using Gaussian blur the file becomes block and all layers as well as their masks become corrupted with these blocks.
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Here are my system specs...
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Model Name:   Mac Pro Model Identifier:   MacPro5,1 Processor Name:   6-Core Intel Xeon Processor Speed:   2.66 GHz Number Of Processors:   2 Total Number Of Cores:   12 L2 Cache (per core):   256 KB L3 Cache (per processor):   12 MB Memory:   16 GB Processor Interconnect Speed:   6.4 GT/s Boot ROM Version:   MP51.007F.B00 SMC Version (system):   1.39f11 SMC Version (processor tray):   1.39f11
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Jul 23, 2012
Create a shape with the Rounded Rectangle > I apply a Gradient & Bevel
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New Layer > Fill with White > Ctrl + Alt + G (clipping mask) > change Layer Blend to Multiply > Opactity to 35% > Filter > Noise > Add NoiseÂ
New Layer > Ctrl + Alt + G > Ctrl + Click on the Rounded Rectangle Shape to create a Selection
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From there I am suppose to add a Stroke by right clicking on the object but that doesn't work. The only menu that pops up is a list of my layers. So, rather I select the Rounded Rectangle layer and then click Effects and select Stroke and then set the values for the stroke. Next I am suppose to add a blur.
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Blur > Gaussian Blur but the Stroke ends up filling the entire object. No, I didn't set the Blur to like 1,000 it's only set to 5.9 . I tried this on an other computer and the same thing happens. I called Adobe but they were unable to assist even get as far as the Stroke.
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Dec 8, 2008
I want to blur the background of sports photos (still too much in focus even with lens wide open). I put the key player(s) on one layer and the background on another, then apply a Gaussian blur, which gives me a white line where background meets foreground.
I can painstakingly rubber stamp extend the edge of the background about 10 pixels behind the foreground and that seems to work, but it's painstakingly slow. Is there a better way or even a plug-in?
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May 3, 2012
Using PS CS4 on XP. I just got a job back from the printer company & I am noticing some lines that didn't appear on my print out here (on xerox color printer machine) to compare. I didn't really catch them on the proof either, but they used an epson proof and we printed on 100# gloss text stock for the final.
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What I have going on is a gradient background (using shape layer and gradient layer style effect) from a white to a light tan. Top to bottom on a regular Letter size sheet. In the upper right hand corner I have a image of a face that had that same light tan in the background. I faded this image into the gradient background by using gaussian blur.
This is not very noticable in the file, but I can tell that it is there...you have to really focus your eyes to see it, but it's there, a line going around the image where the gaussian blur is. I'll attach a photo of the edge. I guess what I'm saying is it is not smooth - the image edges being blurred into the gradient background, but printed off a regular printer, it looks smooth. Is there anything I can do to prevent this in the future?
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Jul 29, 2013
As far as I know, gaussian blur is a spatial convolution filter and smart sharpen is a deconvolution filter.So I think that they should be opposite of each other when smart sharpen is at the gaussian blur mode.But we can not remove gaussian blur (applied to a JPEG) with the smart sharpen adjusted for the same radius.
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Jun 30, 2012
I have a picture has hard edges and I was able to blend these edges using lasso, mask and then Gaussian blur, check attached picture. is there a another way can produce better result or that result is enough ?
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Oct 31, 2012
I've been experimenting with using Gaussian Blur on uncompressed TIFF images. The TIFF images consist of scans of printed images with a screen ruling.
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I've been noticing an 8x8 blocking artifact when compressing the blurred images to JPEG's. (The reason for not using the scanner's Descreen feature is so that I can selectively blur.)
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Here, a JPEG without prior blurring appears on top, and a JPEG with prior blurring appears on the bottom:Â
Would blurring the JPEG, instead of blurring the TIFF beforehand, be preferable?
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Mar 7, 2009
I'm trying to create a bell-shaped (Gaussian) curve in Photoshop CS3, using the Pen Tool, however apparently I am not good enough with it... I can create a curve that resembles a simple (upside-down) parabola, however I can't figure out how to further go from here in order to add the extra inflexions on the sides that make the parabola into a Gaussian curve.
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Mar 29, 2012
what's the difference between depth-of-field, Gaussian blur and Orton Effect. Never having seen Orton wedding pics, I'm not sure.
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Aug 28, 2013
I am trying to locate information on how to achieve a real time display of the Gaussian blur while painting with the brush.
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Google is not being useful, nor does Adobe's own forum searches yield anything useful.
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I have seen mention of Smart Filters and designating the layer as a Smart Object in order to enable a Smart Filter but I can't seem to get the real time display of the filter when painting so I'm not sure if that proccess is at all useful for me or not as I can't locate information specific to what I'm trying to do.
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I'm incidentally using CS5, so if this option doesn't exist, that would be useful to know so that I'm not spinning my wheels.
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Sep 3, 2013
I was using the Gaussian Blur around letters to contrast the background and getting a very wide radius with a very gradual but complete shift in intensity from the edge of the blur to the edge of the letters. That is to say, the blur effect would extend all the way out to the Blur radius fading to nothing and the brightest part of the blur was very near the edge of the letters and not far inside the middle of a letter. That was great!!! Exactly what I wanted!
Then I went to do it again and got the default behavior:
No matter how wide I set the radius in the Gaussian Blur it is still the same width, it is just more faded. And the range of the intensity is dramatically reduced, with the brightest part of the blur far inside the edges of the letters, no matter how much I grow the Alpha to Selection of the letters. Now I am very unhappy.
I tried Reset all Filters, but the 2nd behavior is obviously the default. So how did I do that??? How did I get the 1st behavior? How did I get the Gaussian Blur to extend out so much farther without overwhelming the background? The default behavior of a Gaussian Blur of an Alpha to Selection of letters that are substantially grown is that they completely overwhelms the background and there is hardly any gradient, it is just a uniform halo with little change in intensity.
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Jul 28, 2013
how to get the desired end result. When applying the Gaussian blur effect, I find that doing this always adds additional width or height to my object which makes the graphic larger than the desired size. To be more specific, I have a rectangle that is 640px by 100px and I want to add an element on top of that is 640px by 4px. I add the Gaussian blur effect to the 640px by 4px object so that my rectangle appears to have depth and my overall graphic is not flat. The problem comes when I export the both elements because the Gaussian blur has now increased the width of my graphic to be larger then desired. Is there a why to add the Gaussian blur effect without increasing the width of my graphic? The final result is a graphic width of 656px.
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Dec 23, 2013
Working on a header. I would like the background of the header to be blurred (gaussian blur). How to do this or post a link to a guide? If so, do I need any plugins?
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Jan 1, 2012
My predicament: Sharp eagle in a noisy clear blue sky. Is it possible to free select around the eagle and apply the selective gaussian blur to just the sky in one step? As it stands I am only able to blur just the sky if I select it in two less than precise sections.
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Aug 27, 2012
Object above is just a typical path.Below is a copy with a 51px Gaussian Blur applied. (using 300DPI Raster Effects Settings).
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Jun 4, 2012
How do I make a Gaussian blur in LR4 ?I have tried to mask the area and unsharpen and unclairify but doesn't work.
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Apr 25, 2012
I am wondering why the gradients that paint.net generate look so dull, and i've experimented with creating the gradient by just filling two colors and then applying gaussian blur. Is there a reason why the gradient looks dull? and is there already a tool for creating a gradient like a gaussian blur provides?
it looks like the gradient tool creates a lot of "in between" color, in my example gray. I've attached an example. The gradient is on the left, gaussian blur on the right.
Attached Thumbnails
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Jan 23, 2013
I selected a square region in a new layer, filled it with a single color, then tried to apply a gaussian blur to the square selection. The preview shows an inner blur on the square, but when I press OK, nothing happens.
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Mar 4, 2013
How not to get chunky blur results in Illustrator? the screengrab shows what I mean...in the blurred portion, you can clearly see square "chunks" like maybe that's the best resolution it could do...matters not even if I scale up the art to be blurred...
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Mar 20, 2013
I'm using Mac OSX and have just upgraded to CS4, from Illustrator 10. Our house style is a gaussian blur of 10 pixels, but it doesn't display correctly in CS4 - it's much thinner. I've had this problem before and just exported from CS4 then created the blur in Illustrator 10. On Wednesday last week I tried CS4 again and the blurs displayed at the correct size, then on Friday afternoon (I had used the blur tool successfully in the morning) it started making the blurs too thin again.
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It's set to 100% on all the different projects with 10 pixel blur, so why are my gaussian blurs thinner in some and not others in CS4, but all the correct width in Illustrator 10? This is really frustrating as it would be such a waste of money not to be able to use CS4, and have to go back to Illustrator 10.
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Jan 11, 2014
Using Premier Pro CS6, I have placed a JPEG file on the timeline and have tried to blur it via Gaussian Blur. The instant I move the "Blurriness" number above 0.0, the Program monitor turns black. I have tried some of the other blur functions with similar results (i.e., no blurring). The blur functions do work on my videos.  Do the various blur functions only work on videos and not still, e.g., JPEG? If so, is there a workaround to blur a JPEG file?Â
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Apr 4, 2013
Made a change in a document that involded a Linear Fill... now everytime I open this file the message is repeated until I force quit AI_CS6.
iMac 10.8.3 1, 2.9GHz i5, 8 GB Ram
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Dec 18, 2005
i have outlined this pic and used the Gaussian blur , but how would i soften the edges of the blur so it doesnt look so "sharp"? I want it to kinda blend in so to say here is the pic.
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Feb 11, 2013
Opening a Canon .CR2 in Photoshop CS6, Camera Raw generates a significant amount of noise or graininess in the image compared with the simultaneously saved .JPG file. This results in the image from the raw file being of reduced quality. I never had this problem using Photoshop CS5.Â
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Is this the result of some setting being turned on? If so, I have been unable to figure out which one. The only other possibility is that there is a severe flaw in the latest version of the Camera Raw plugin.
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Oct 6, 2013
What is causing the colored noise in the above image? This appears before I do any editing. When I import the image from Lightroom 5.Â
I turn on the Gamut Warning, and it disappears. I know. But then, obviously, the gray from the Gamut Warning occupies parts of the image. I open the image as a 16 bit PSD.
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Dec 6, 2013
I have low-light photo taken at 1600 iso and I'd like to de-noise it and sharpen it a bit with high pass. Will it matter which comes first?
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Apr 7, 2009
I am trying to create a star field for this school project. I've been trying to create one using the Add noise feature on a black background. I get to the point were I'm pretty satisfied with the end result. I used some other adjustments like curves, brightness and contrast, and exposure. All of these created a pretty solid star field. However I've noticed two things when trying to save the image at hand as a JPG or apply the image to a new layer. Both instances yield the image reverting back to the initial add noise, as if it adds the original noise I started with when I first began the project and I'm at my wits ends as to why it's doing that.
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