29
votes
Accepted
What does Photoshop's "High Pass" filter actually do under the hood?
High pass is the opposite of gaussian blur
If you take an image and blur it you only keep the "low frequencies". High pass makes the opposite, it only lets the "high frequencies" pass, or what most ...
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7
votes
What does Photoshop's "High Pass" filter actually do under the hood?
A high pass filter is a fitter that removes low frequency information form a singnal. Now there are many ways to implement a high pass filter, but photoshops high pass filter most likely is the result ...
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5
votes
Mathematically calculating visual balance
What your essentially asking is a special case of kerning. Systems that do automatic kerning have been done. This is called optical kerning in inDesign, you can find a few other companies have made ...
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5
votes
What does Photoshop's "High Pass" filter actually do under the hood?
None of the answers so far have touched on the maths behind the filter. Here's a detailed writeup from which I quote:
Frequency filters process an image in the frequency domain. The image is ...
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3
votes
Accepted
How to draw a full rose curve using function plotter in inkscape
You seem to want a polar plot. X means the angle and Y means the radius. The angle covers a single turn (that's exactly 2Pi radians) if the X range is from 0 to 1 and option X is multiplied by 2Pi is ...
- 79
3
votes
What software should I use to create editable mathematical vector images like these?
The utility Grapher on Mac OS can handle analyzing and displaying most of this sort of stuff out-of-the-box, but as the easiest output is then raster instead of vector, I agree with the earlier post ...
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3
votes
Accepted
Can I have vertically aligned subscript and superscript with Word or LibreOffice?
Yes it's certainly possible with LibreOffice.
In LibreOffice Writer, click Insert > Object > Formula
In the window that opens at the bottom type in the formula as follows
%PI^1_1
Here's a screen ...
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3
votes
A font for mathematical notation
But LaTeX does use math fonts with mathematical symbols. But just using math fonts isn't enough to typeset math.
The other answer talks about 200-400 characters. LaTeX easily needs more.
For instance,...
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2
votes
Mathematically calculating visual balance
typography itself has its rules to balance the types, ascendents, descendents, width, height, center, etc. balancing text is kinda about grasping the right spot to use as your reference frame for ...
- 119
2
votes
Accepted
Vertically center text on line with inline graphic in Scribus
Select the inline graphic by highlighting it, right click it, and choose Properties
Click the Text tab, then Advanced Settings tab, then change the Baseline Offset setting to a negative value.
- 87.8k
2
votes
Writing equations in Photoshop
There's no way to type maths formulas directly into Photoshop, unless there's some plugin I'm not aware of.
Instead, enter your formula in MS Word or LibreOffice Text, or if you're more familiar with ...
- 87.8k
2
votes
How can I bend a LaTeX equation as a SVG in Inkscape so that it follows a curve?
I have used the LaTeX Previewer for something similar to this. It's an online service so there's nothing to install. It allows you to type in an equation and download an SVG which can then be opened ...
- 87.8k
2
votes
How do I produce this pentagon in the link in the simplest way, with added vertex names?
If you know basics of Illustrator, you can try like this:
For the shapes - Draw your shape and place circles/squares to represent angles and select all and use Pathfinder tool to outline them and ...
- 4,210
2
votes
Is there a name/formulae for the hue-circle scaling Adobe is using with "Kuler"
I'm currently investigating this issue.
To state my problem, it is that, with a different colour wheel, you get different suggested colour harmonies.
In the Adobe wheel, red and green are '...
- 125
2
votes
InDesign: Double Overbar
Create a Character Style and use the Underline Options, adjust the settings similar to the (first image below), negative offset moves the underline above, you have a few Type presets, and then apply ...
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1
vote
Accepted
Creating a curved 3d grid in Inkscape
Inkscape does't have tools which understand surfaces and curves in 3D space. With 2D tools it's easy to draw only surfaces which are nearly flat i.e. one side of the surface is fully visible and there ...
1
vote
Creating a curved 3d grid in Inkscape
You can try with path effects:
draw a square
Path > Path Effects...
add Tiling effect to create a grid
add Enveloppe Deformation to create a 3D like effect
I didn't manage to get exactly what you ...
- 111
1
vote
Glyphs in Illustrator CC for OS X
The Mac OS does perform some "voodoo".
The Symbol Font was specifically created, and is a mandatory Mac OS font, because the OS does pull from the Symbol font if the user chooses a glyph which is not ...
- 211k
1
vote
Need help creating a graphic template of an arch based on given measurements
First of all, it’s probably safe to assume that all lines are actually straight and not slightly curved. This allows you to reconstruct the springers , as the missing triangle is uniquely defined (see ...
- 14.9k
1
vote
Software to draw diagrams of math functions
You can double check your formula against Wolfram Alpha.
It will also show you a sample graph of most functions: Example for f(x)=x^2
If you get a pro (paid) account with them, they also let you ...
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vote
What software should I use to create editable mathematical vector images like these?
Ex 1:
Any 3D animation, or math app app will do, i would prbably use Mathematica for this but scipy or even pstricks will do fine. But for more discussion on this topic even how to do this in ...
- 58.3k
1
vote
Accepted
Programmatic swirl function
I assume that this question is addressed at me. No, it isn't PostScript, its just a function I didn't claim otherwise (i mean pots script as in 'appended'). See GD.SE does not support LaTex so I use ...
- 58.3k
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