Gaussian blur vs smart sharpen

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.
Why are they not opposite to each other?

As a long-term user of USM, I am confused about the function of threshold slider in USM now. Reference says that:
"Drag the Threshold slider or enter a value to determine how different the sharpened pixels must be from the surrounding area before they
are considered edge pixels and sharpened by the filter. For instance, a threshold of 4 affects all pixels that have tonal values that differ by a
value of 4 or more, on a scale of 0 to 255. So, if adjacent pixels have tonal values of 128 and 129, they are not affected."
Look at the following image please:
Initial tone difference is 40 and threshold is set to 30. According to the reference, USM should apply the indicated amount as sharpening here, but there is no change in the tone levels as seen at the info panel.
I think that threshold is working as a fine tuner for the amount slider, it is not functioning as said in the reference.
I would like to learn your thoughts,
Am I missing something?

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Resize Smart Object keeping Gaussian blur aspect?

Is there any way (that I'm missing)to resize a smart object wich has a smart gaussian blur filter while keeping the same aspect and without rasterizing it first?
Lets say I'm using a background for a product that needs to be out of focus: ussualy I would convert that background image (a not too large JPG in most casses) to a smart object and then apply a (smart) gaussian blur in case it needs to be further or less focused down the road.
Latter when Image is finished and if for some reason (usualy client complaining about image size) I need to resize the document the settings for blur remain the same causing it to be a lot more unfocused in that new smaller size than the original image size.
Is there any workaround (to keep it editable) that I'm missing?
Ty for any help.

I never really thought of that but makes perfect sense.. ty,sometimes you just need a fresh look into things,now you have mentioned it looks perfectly natural,dont know how I didnt thought of that.big thanks.

Smart Sharpen not Working in CC 2014

Recently I upgraded from CC to CC 2014. Since then I can't get Smart Sharpen to work. Lens and motion blur don't work at all. Sometimes when I choose Gaussian blur it works other times not.
It's not just me, a friend who has it installed on two computers can't make it work either.
Any ideas?

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Gaussian Blur in Photoshop CS5 Corrupting files

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 blocky and all layers as well as their masks become corrupted with these blocks. Can anyone help or is there any advice?
Here are my system specs...
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

I'm getting this same issue - or a similar one. It seems to only happen when I run the Gaussian blur command, and during the same process in my workflow. It also seems for me to happen when I have made a selection from a layer above that is a smart object.
Let me describe the scenario that I have experienced a couple times in the past week. (BTW I just upgraded to CS5 only a couple weeks ago).
Usually I have a document open with dozens or hundreds of layers. The effect that I am executing when this seems to happen is where I have a group of shapes or placed image smart object layer and I'm creating a shadow layer by making a blank layer below said group or image, making a selection from the above group or image, and then filling the selection in the blank layer with a color - which I then run the Gaussian blur filter on, and afterward warp transform to get my realistic looking shadow effect.
But the problem is in seemingly random instances and on seemingly random documents when I run that Gaussian blur, Photoshop freaks out and craps the bed. And by craps the bed I mean deletes pixel data from multiple layers in my document very randomly, and also generates odd bright colors all throughout the document.
You can see the initial freak out in this screen shot from when I just initially selected the Gaussian blur filter from the menu (but had not yet even clicked "OK"): http://cl.ly/3KTx . The strange thing is that I had just run this series of steps on the above layer which in the screen shot you'll see as "Layer 44", and all was well.
Here's a screen shot showing the file after I closed it out, restarted Photoshop, and opened the file back up: http://cl.ly/3K2C . In case you can't tell, data from several layers all over the file is missing and corrupted.
I'm sure I don't have to explain how exasperating this is, as this represents more than a year's worth of work on a client project, no joke. Fortunately I'm mostly done with the actual site build, but that makes the loss of the artwork files of no less consquence - especially seeing as how I'm not ACTUALLY finished and I did in fact need all of that data to complete the project.
Anyhow, some additional details which may or may not be related to the issue:
- The issue seems to happen randomly. As stated above the same steps did not produce the error just a few minutes before.
- I have had this issue with another file this week where I was doing the same processes on another shape.
- It seems that this is occuring when I make the selection from a layer that is a smart object of some type
- I also noticed artifacts in the weird colors (after I tried running the processes again, so not in the above screenshot) that were actually design elements from an entirely different document that I was working with earlier this evening.
- I have filed a bug report.
Dunno what else to describe, but I hope you guys can get this figured out, seriously. I paid way too much for my upgrade to CS5 to have bugs in key software features corrupt my files thank you.
Also, in regards to my system...
Model Name: Mac Pro
Model Identifier: MacPro4,1
Processor Name: Quad-Core Intel Xeon
Processor Speed: 2.26 GHz
Number Of Processors: 2
Total Number Of Cores: 8
L2 Cache (per core): 256 KB
L3 Cache (per processor): 8 MB
Memory: 16 GB
Processor Interconnect Speed: 5.86 GT/s
Boot ROM Version: MP41.0081.B07
SMC Version (system): 1.39f5
SMC Version (processor tray): 1.39f5
Chipset Model: NVIDIA GeForce GT 120
Type: GPU
Bus: PCIe
Slot: Slot-1
PCIe Lane Width: x16
VRAM (Total): 512 MB
Vendor: NVIDIA (0x10de)
Device ID: 0x0640
Revision ID: 0x00a1
ROM Revision: 3386
Displays:
Display Connector:
Status: No Display Connected
LED Cinema Display:
Resolution: 1920 x 1200
Pixel Depth: 32-Bit Color (ARGB8888)
Main Display: Yes
Mirror: Off
Online: Yes
Rotation: Supported
Connection Type: DisplayPort

How to batch apply Gaussian blur in Aperture

I find myself applying Gaussian Blur to a lot of our shots via Photoshop CS3.
We keep all our shots in Aperture, so I click the image to edit it in CS3, copy layer, apply gaussian blur and set transparency to 30-40%....
Is there a way to automate this ?

You can set up scripts/actions in PS which will automatically be applied to every image that is opened, but I can't remember how you do it. And it would be applied to every image whether you like it or not...
Ian
P.S. Most people are trying to sharpen the images, why blurring?

Is there no gaussian blur transparency feature in keynote?

In keynote, you can make a shape transparent, but I also want to add a gaussian blur. I could have sworn this was a feature in keynote, but I can't seem to find it. Please tell me it exists, it's such a sleek effect and it would be a total shame if the Yosemite still hasn't added this feature. Currently on OS X Yosemite 10.10 with the newest version of Keynote (V. 6.5)

This used to be possible in the old version of Keynote. When you selected an image and went to the image properties, you could move the Sharpness drawer from the center to the left, thus creating a gaussian blur. In the current version the drawer is already on the left, so you could only sharpen the image.
It could be a bug, although one which has existed from the moment on they release the new Keynote back in 2013.

Chris Cox: Fade a gaussian blur on a layer with a mask, who should I thank?

I remember in the past that it was impossible to fade a gaussian blur if it was applied on a layer with a layer mask with the link icon active, as the blur also affected the mask. (some sharpen filters also affect both layer and mask)
Now, even in Ps 13.0.1.3, I notice that it is possible to fade, both the layer and mask using the fade function.
I'm gladly surprised it had been implemented, as I felt reluctancy to do it in the past when I mentionned the issue.
It now makes a more natural and discoverable workflow.
Thanks to whoever implemented it, or corrected that bug according on how it is seen!

Not sure who made that change.

Photoshop CC Smart Sharpen vs. LR/ACR Sharpening

Could someone articulate for me how Photoshop CC's Smart Sharpening differs from Lightroom (and ACR's) sharpening in the Detail panel? Do they approach sharpening differently? Is one more powerful than the other, and if so, in what way? Are there particular circumstances under which you find it worthwhile to use SS rather than stay with LR/ACR? (I do see that SS allows one to control the effect in highlights and shadows.)
I have generally been sticking with LR sharpening, but want to be able to answer these questions intelligently (and be aware of circumstances where I should take the time to open PS and use SS).
Thank you!

Laura Shoe wrote:
Could someone articulate for me how Photoshop CC's Smart Sharpening differs from Lightroom (and ACR's) sharpening in the Detail panel?
The approach is potentially similar if you have SS set to fix lens blur and you have LR's Detail slider moved way over to the right (+50 and above). When set up like that, both tools can do deconvolution type sharpening...
Booth tools can set the sharpening radius and both have an amount (although I doubt the numbers relate–prolly a different scale).
With SS the sharpening is applied on the color data while in LR the sharpening is only on the luminance data. With SS on a layer, you can set the layer blend to luminance. With SS you can roll off and control the sharpening contours of the highlights and shadows. In LR the sharpening is preset to roll off the highlights and shadows so there's no user control.
In SS you can (in CC) can adjust noise reduction while sharpening. In LR you can as well. The only thing that SS can do that LR can't is to resharpen for motion blur. However, SS is pretty weak in that department compared to the new anti-shake filter.
Which one is better? 6 of one, 1/2 dozen of the other. I would not leave LR simply to run SS on an image and be forced to work on a rendered image. I would do all the capture sharpening in LR and would only use SS if I was going to go into Photoshop anyway and even then, more likely to use SS for effect sharpening not capture sharpening.

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Laura Shoe wrote:
Could someone articulate for me how Photoshop CC's Smart Sharpening differs from Lightroom (and ACR's) sharpening in the Detail panel?
The approach is potentially similar if you have SS set to fix lens blur and you have LR's Detail slider moved way over to the right (+50 and above). When set up like that, both tools can do deconvolution type sharpening...
Booth tools can set the sharpening radius and both have an amount (although I doubt the numbers relate–prolly a different scale).
With SS the sharpening is applied on the color data while in LR the sharpening is only on the luminance data. With SS on a layer, you can set the layer blend to luminance. With SS you can roll off and control the sharpening contours of the highlights and shadows. In LR the sharpening is preset to roll off the highlights and shadows so there's no user control.
In SS you can (in CC) can adjust noise reduction while sharpening. In LR you can as well. The only thing that SS can do that LR can't is to resharpen for motion blur. However, SS is pretty weak in that department compared to the new anti-shake filter.
Which one is better? 6 of one, 1/2 dozen of the other. I would not leave LR simply to run SS on an image and be forced to work on a rendered image. I would do all the capture sharpening in LR and would only use SS if I was going to go into Photoshop anyway and even then, more likely to use SS for effect sharpening not capture sharpening.

Creating a symbol from shape with gaussian blur = problem

I am trying to create artwork to map to a globe using the 3D revolve effect...the problem is the shape/layer I'm using to create the "glow" effect (compound path filled with white and a gaussian blur applied):
When I create a symbol out of this, here is the problem (note the "excess" areas on the top and right):
...resulting in this messed up globe...
Doing an outer glow effect instead of gaussian blur results in the same thing (its definitely the blur causing this, deleting the shape fixes the problem). Expanding the shape with the blur results in an image the same size as the bounding box in image 2 above. Any ideas how to address this?
thx

Yep, that did it! (something strange going on now with the longitude/latitude lines going thru India, but I'll work on that later)...Thank you!

Could not complete the smart sharpen command because there is not enough memory (RAM)

Hi,
I'm trying to complete the AutoSharpen (Filter->Sharpen->AutoSharpen) feature but, i'm getting the following error when i click on "Ok".
Error in Dialogue Box "Could not complete the smart sharpen command because there is not enough memory (RAM)".
Request the SME's and Adobe community team members to help me overcome this step to proceed further.
I'm using a 32 Bit Win7 OS and have a 4GB RAM on board.
Regards,
Sachin_

As Curt says, Photoshop got more hungry for RAM from CS4, and 32bit systems just weren't cutting it, but there was a trick we used to use to squeeze a bigger slice of the available installed 4Gb
Run the Command Prompt as Administrator, and type:
"bcdedit /set IncreaseUserVa 3072" (I can't remember whether the quote marks are needed or not.)
That used to work for me with XP, and it is _supposed_ to work with Windows 7, but I know it doesn't always.
If it doesn't work, or has unwanted consequences, turn it off with:
"bcdedit /deletevalue IncreaseUserVa"
If you want to research it before trying, seach for 'Windows 7 3Gb switch'.

Problems with smart sharpening in Photoshop CC 14.2

When I open the smart sharpening filter, the hand symbol pops up and Photoshop doesn't do anything anymore. With Ctrl - Alt - Delete I have to shut down the program. All other filters work correctly. I also removed and installed Photoshop CC again, but the problems are still the same.
Can someone advise?
Regards Piebe

Smart Sharpen was one of the things tweaked in 14.2 so it may have been to do with your Preferences > Performance settings. (In case it goes wrong again)
From this page
Additional improvements
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Thank you!

What exactly is not working in Smart Sharpen? Are you seeing the Preview? Have you adjusted sliders to extreme to see if any effect? Are you viewing Preview pane at 100%? Have you gone Select>Deselect to make sure you don't have some pixels selected somewhere? A screenshot may be helpful to show what is not working.

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Hi there
I would like to know how can I "smooth in" a gaussian blur fx. I recorded a video and needed to add a tittle to
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IIt sounds like you want to keyframe the blur to ramp it up. Set a keyframe, button next to the value box, and set the slider to zero. Move later in time where you want the blur to finish increasing and set the slider value to whatever you want. The additional keyframe will be added automatically.

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When you are zoomed out, many pixels are averaged into a single display pixel. For performance reasons, the sharpening is previewed on that downsampeld version of the image. When you apply the filter, it applies to the full resolution version of the image, which then gets downsampled again for your zoomed out preview.
So, let's say you had a grid of black and white pixels. Zoomed out, it looks like gray. Sharpening would appear to have an effect depending on the zoom level, but would never have any effect on the base level.
And no, there is no way to keep performance reasonable and give you an accurate preview of applying the filter to the full resolution image.

Gaussian blur vs smart sharpen

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