1.6.3 After resizing Pictures show jagged

[XnSoldier]

I have a high resolution image of like 5400x5400 pixels and I resize it to 200x200:

I also tried other resizing Methods like Lancoz2 to no avail.

Direct Screenshot result looks jagged on100% display on a 4K Display. In XnView it actually looks smaller. Same as the image below.

Image Attribution: macrovector - Freepik

Saved Image:

Image Attribution: macrovector - Freepik

When I open the Image in Microsoft "photos" it looks smooth and smaller:


Very confusing.

BTW: When zooming I get very odd zoom factors: 200-142-100-71-51-35-26-18-13%

[xnview]

please send me the original file

[XnSoldier]

Original:

Image by: Macrovector - Freepic

reduced version:

Image by: Macrovector - Freepic

But I had that with other images also. So it is not necessarily this. I don't know if it is just the display mechanism. but when showing 100% or at least like 1 pixel of image is 1 pixel of screen there should be no jagged edges.

But if I open the resized version in a browser or with the microsoft photo app it looks all fine and smooth. well, could be a bit better in the browser though. Maybe resizing algorithm is not ideal for such graphics.
The microsoft photo app seems to smoothen images on display.

[xnview]

You have not the same result when showing the reduced 200x200 image in XnView & default Photos app?

[XnTriq]

Direct Screenshot result looks jagged on100% display on a 4K Display. In XnView it actually looks smaller. Same as the image below.

1. Is High zoom Quality in the View menu activated?
2. Is Zoom on HiDPI screen: 1 image pixel equals 1 screen pixel in Tools → Settings… → View → View activated?

Possibly related:

There is an issue in QT library when using non decimal scaling like 125,150,175%

[XnTriq]

BTW: When zooming I get very odd zoom factors: 200-142-100-71-51-35-26-18-13%

You can switch from Relative step to Fixed step in Tools → Settings… → View → View.

• zoom steps by a ratio of qrt(2)=1,414213562
• Zoom level rounding