Some image magic

[rolf]

Now I am officially framed....

That reminds me...

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convert -border 7x7 -bordercolor red vikingt1.png vikingframed.png

[viking60]

Yup you do not get more framed than that And we learned how to put a colored frame around it too

[viking60]

You often get those pdf's from companies with fantastic pictures that you would love to use right (BMW, Mercedes etc)? And since they are delivered in pdf format you cannot use the pics
Well there is a solution:
Normally one would think that

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convert foo.pdf pages.png

Would do the trick - but no. It breaks up the pdf in different sections but the naming gets wrong: Like this pages.png.2 pages.png.3 pages.png.4
So this will do it:

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convert foo.pdf pages-%03d.png

The %03d is a printf-style format specifier and now the pdf is broken down like this:
pages-000.png pages-001.png pages-002.png pages-003.png

Now you can grab the pictures and edit in Gimp or whatever.
Of course you need to get the permission from the copyright holders in order to use the pics - but you knew that - right?

[viking60]

I decided to create some transparent corners and add them to a pic. And I found out that the NorthWest and SouthEast thing is very presize.
I created four corners called nw ne sw and se.png
Well I actually created one and rotated it a couple of times
Then I picked a random picture and added the corners to it like this:

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composite -gravity NorthEast ne.png output.png guru.png

and

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composite -gravity NorthWest nw.png guru.png guru-1.png

By now the image looks like this (guru-1.png):

then

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composite -gravity SouthWest sw.png guru-1.png guru-2.png

and

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composite -gravity SouthEast se.png guru-2.png guru-3.png

Here are the corners i used
->->
->
->
You cannot see them because they are transparent., but you can download them and use them (actually you can barely see them because i did not make them perfect so you can see the white background -to make it perfectly integrated here that background should have been light blue)
Here I have reduced the size of the corners above to 50% with:

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mogrify -resize 50% se.png sw.png nw.png ne.png

Here is an image where the cornes have the background of this forum (you can see the white bg on the other images) so it is perfectly integrated:

[viking60]

I probably lost most of you with that complicated rounded corner stuff above -right? And it is probably easier done in Gimp anyway.

What you want is the simple command that you can copy and paste and make it happen
So here we go:

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convert party.jpg -alpha set -virtual-pixel transparent -channel A -blur 0x8  -level 50%,100% +channel  soft_edge.png

You can also use the threshold switch:

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convert party.jpg -alpha set -virtual-pixel transparent -channel A -blur 0x8  -threshold 50%,100% +channel  party.png

The only thing you need to change here is party.jpg (unless you have a pic called that).
It is not as slick as the above but it is fast. And you can do it to the entire directory with one comand:

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convert *.jpg -alpha set -virtual-pixel transparent -channel A -blur 0x8  -level 50%,100% +channel  soft_edge.png

Will round all your jpg images.

[viking60]

If you want that Old "from the Wild West/Silent movie" portrait look you can do this:

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convert party.jpg -alpha set -background none -vignette 0x4 pblur.png

[rolf]

Good tips. We're witnessing the next Instagram, in the making.

[viking60]

Instagram is a stalkers wet dream so that is not likely
Anyway here is a command that creates and draws up the corners and places them on the image.
As the gurus know - and you might not - the "\" will allow you to write the command over several lines with a ">" prompt in your terminal. When finished just hit Enter and the command executes.
My pic is called good.png yours will be different. It will give you a new pic called rounded_corners.png

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 convert good.png \
     \( +clone  -alpha extract \
        -draw 'fill black polygon 0,0 0,15 15,0 fill white circle 15,15 15,0' \
        \( +clone -flip \) -compose Multiply -composite \
        \( +clone -flop \) -compose Multiply -composite \
     \) -alpha off -compose CopyOpacity -composite  rounded_corners.png

Here the effect is perfect.

All you have to do is to change good.png in the code above and run the code in a terminal in the directory where your pic is. (edit it before you paste it).
I am on a roll now so I had to put a shadow on it:

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convert -page +4+4 rounded_corners.png -alpha set           \( +clone -background navy -shadow 60x4+4+4 \) +swap           -background none -mosaic     shadow_soft.png


It is all on the imagemagick website. IBM also has some nice tips for imagemagic. And I often have more trouble using GUI's than the CLI for image manipulation. It depends on what you want to do. Imagemagic is Great stuff!

[viking60]

Here I have put Gizmo (gizmo2.png) in a glass buble.

I used this image as a mask (badge_overlay140.png)

And then I entered this command:

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convert gizmo2.png  -gravity center -extent 140x140  badge_overlay140.png -composite badge.png

[rolf]

Very sophisticated. Is Gizmo running for Mayor of Fyllingsdalen and that's his campaign button?

[viking60]

Yup he is a confident guy with lots of ambitions.
So he has appointed you his campaign general - since he will now gracefully accept the task of improving your presidency.
Here is the badge that you can distribute.

According to Gizmo Obama is toast now.
He is annoyed that he only will be the second black president though...

[viking60]

Imagemagic can be used to take snapshots of your desktop too.
The import command takes care of that.
You can take a snapshot like this

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import test.png

..and click on the window you want to take a snapshot of or click on the desktop for a snapshot of all.

You can take multiple snaps in one operation.
This command will wait for you to click on three windows and then take a snap of all of them:

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import  -snaps 3 berserksnap.jpeg