png to 2D picture "ugly" result

[Blokk]

First of all, sorry about I cannot define my problem better, but I am really not familiar with graphics handling, and picture transforming, so I can only say the result is ugly 🙂

I have a simple example png file, created from a vector graphic svg file, using Inkscape. Size of the png is 300 x 200, dpi: 270.

My problem is that, I would like to present this png picture on my front panel in good quality, in a 2D picture indicator. When I do this, the result looks "ugly" or "pixellized". Is there a way to display such png file in LV with a better quality (I have LV 2015 Pro 32bit, but no IMAQ and other similar toolkits available)? If I have a look at this png file using for example Irfanview, even after some zoom in, the picture looks good and "smooth".

Right now I use this simple way to load the png into the 2D Picture indicator:

I have also attached the png file for reference.

Edit:

when I compare the LV and Irfanview results (left is LV):

[Blokk]

As a workaround I just decided to use a picture ring, since for this project I have a predefinied static list of png pictures. Looks very sharp and nice 🙂

Anyway, I am also still interested how to display a png in a 2D picture indicator with good resolution...

[Artem.SPb · Accepted solution]

I take your png and fill white background.
There is result (bottom img):

[Blokk]

Please attach the VI, or snippet.

"fill white background" How? Programmatically?

[Blokk]

Ok, i got it!

It looks like LabVIEW cannot handle png files with transparent background good. I have changed the transparent background to white using an image editor, and I get good result after importing to 2D Picture indicator.

Thanks, lesson learned 🙂

[ben64]

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Blokk a écrit :

It looks like LabVIEW cannot handle png files with transparent background good. I have changed the transparent background to white using an image editor, and I get good result after importing to 2D Picture indicator.

Thanks, lesson learned 🙂

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There is an interesting thread on this subject,

Ben64

[Blokk]

Thanks Ben, indeed interesting! I keep this in my mind if I need to deal with transparent images again.