Crop image, cv or/and skia

vvvv gamma question
1

Hi,
I try to crop an image/take a part of an image, but I can´t figure out how to do. can anybody give me a tip?
thanks a lot!
Best regard, matthias

cropping immage
cropping immage826×598 27.1 KB

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With open Cv I think the values are in whole pixels rather than a ratio (-1,1), but what does the error say?

3

Thanks Hadasi,
yes, that was the point. It is somestimes realy confusing, how to operate with the different kind of nodes. Do you know if there is a similiar cropping-possibility in skia? That woul be nice, because I suppose for some cases the skia pipeline is more suitable. What do you think?

Matthias

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You’re welcome Matthiasy,
It may not be perfect but take a look at the ‘panels’ example for Skia in the help browser

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Hi matthiasz,

in Skia if you just want to draw a part of an Image or any Layer (!), you can use ClipRect and ClipPath. Please type clip in the Helpbrowser to get some examples on that.

ClipRect works like that:
image

We will also add a new Crop node with the next release, which will return a new cropped SKImage.

Best,
Anton

2 Likes
6

We’ve added Crop and Crop (Relative) for SKImage.
Please test it in the current previews.

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Thanks a lot for your help! This is great! Thanks a lot!!
Best regards
Matthias

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