output pixel size

Replies to This Discussion

Permalink Reply by Yoann Mescam (Systemiq) on February 4, 2013 at 8:54am

Not simple, but you can try this:

Image Sampler settings: Clamp, Filter:colour and Use image pixel dimensions

It is a bit annoying as you have to load your image twice, first time in the sampler used to get image size, and second time in the sampler you actually use.

Permalink Reply by Carl Lorenz on February 4, 2013 at 9:00am

Great!.. looks like you did what I thought of doing... evaluating a clamped image and seeing what points are within the area.  thanks.  I was hoping I was missing something simple and obvious.

Thanks

Permalink Reply by djordje on February 4, 2013 at 9:10am

There was a VB.NET component too, written by Mateusz Zwierzycki, some time ago:

Yoann, can you please explain the logic behind your solution? Sorry for ignorance.
Merci

Attachments:

• image size in pixels.gh, 129 KB

Permalink Reply by Carl Lorenz on February 4, 2013 at 9:22am

Thanks... works perfect.  It's time like this when I wish I knew how to code!

Carl

Permalink Reply by Yoann Mescam (Systemiq) on February 4, 2013 at 9:25am

When the Tiling is set to Clamp, the points going out of the image will have some default value.

Transparent if the Filter is set to Color, 1.0 if set to Value(brightness), etc...

So if you generate a large number of points in X and Y, they will eventually leave the image range and give the default value. So you can find the points in range, so the dimensions.

Problem is there could actually be some transparent points in the image, which will bug the process.

Permalink Reply by djordje on February 4, 2013 at 9:33am

Very interesting.

I think I will have to look at the Match string component first and what it does, and then try to understand the rest of the solution.
Thank you!

Permalink Reply by Mateusz Zwierzycki on February 4, 2013 at 2:14pm

Man, where did you find it ?! :D I had to search my head quite a long to remind this script myself.

Permalink Reply by djordje on February 4, 2013 at 2:41pm

I had it bookmarked since May last year :)

Permalink Reply by Hannes Löschke on February 4, 2013 at 12:23pm

Do you want to use the pixels later on or just display them? If you hover the mouse over the load icon, it will show name and resolution of the file.

Permalink Reply by Carl Lorenz on February 4, 2013 at 12:43pm

Needed the output... I knew that I could get the info by hovering the mouse, but wanted to get the actual numbers to use as data.  See above... they gave me a few options.

Permalink Reply by Hannes Löschke on February 4, 2013 at 12:58pm

Just wanted to make sure you're not using a sledgehammer to crack a nut. Since you'd have to manually load the image file anyway, Systemiqs solution seemd quite overkill compared to hovering the mouse and manually adjusting two more values. The VB script is nice and simple though.

Permalink Reply by Yoann Mescam (Systemiq) on February 4, 2013 at 3:26pm