PSP 2018: Re-sizing Hi Res Image causing outline.

[SweetCryssy]

I'm taking a hi-res image inside a program I use. The image when taken is 2048x2048 and it's on a transparent background. Before this week, I've been able to open the image, and resize it and layer it on to a background without any issues. Now when I resize the image, I get what looks like a milky outline around the image. I'm resizing it as I always do by pixels and I resample using smartsize. I've never had an issue before. I even went so far as to open my jurassic copy of Jasc Paint Shop Pro 9..load the image and the background, resized, layered it on to the background, and it looked as it always has in the past..no outline. The following is a link of the image on a background un-resized and re-sized to show the difference. https://imgur.com/GunJisQ

Instead of the image looking clean like the un-resized version, once resized, it looks like I did a horrific job of using the magic wand to remove whatever background it was on. I haven't changed any of my settings when resizing, and I just don't understand why it was working last week, and now resizing the image makes it look like crap.

[hartpaul]

Can you provide the image on transparent background to allow others to test.
Have you tried with bicubic rather than smart size.

[Jean-Luc]

Instead of the image looking clean like the un-resized version, once resized, it looks like I did a horrific job of using the magic wand to remove whatever background it was on. I haven't changed any of my settings when resizing, and I just don't understand why it was working last week, and now resizing the image makes it look like crap.

Did you lock the layer's transparency ?

[SweetCryssy]

I did try bicubic, and the same thing happens. The only way I've found to solve the issue, since I posted..is to open my old Jasc PSP9 resize the image there and save..then then open the smaller re-resized image in PSP 2018. Having to do this is..ridiculous because the whole purpose is to be able to do everything in 1 program.

Can download the image here :

https://www.dropbox.com/s/wr1rcb64iu86o ... t.rar?dl=0

[hartpaul]

Thanks for that. I did a comparison test :
1. New document 2048 , 2048 pixels and filled with a dark green (as the halo is more visible against a darker color)
2. Copied and pasted your image as a new layer.
3. Saved this to the desktop as a pspimage, backward compatible to Jasc PSP 8.
4, Loaded this image into Psp Versions 2018, X9, Jasc pSP8, Corel X2, X4 and in each case resized the image then scaled up to 1000%. Took a screenshot and then cropped the same area for comparison.

So it can be seen that this is a bug from way back when Corel took it over and apparently changed the resizing algorithm.
You have it working in Jasc PSP 9 and I have it working in PSP 8 but all the Corel versions have this halo around the edges.

Now you found a work around, but there is a simpler way.

Open 2018 and Jasc PSP 9. Minimise 2018 to the task bar . Load your image into Jasc PSP 9 and do your resize and make sure you have your layers palette showing.

Now left click on the layer for your resized image and drag it down to the Taskbar icon for 2018. 2018 should then maximise, continue dragging into the work space and release your mouse button and a copy of your image will have been transferred from your 9 to 2018 without having to save the image first or reload any programs. The transfer works both ways with a single layer image

This is one advantage of PSP in that different versions can be left open and minimised to the task bar

[flagpole]

this has come up before.
It's basically a bug. The resampling basically assumes, in the absence of any other information that the rgb for the colour values is 0,0,0
http://forum.corel.com/EN/viewtopic.php?f=56&t=59271
http://forum.corel.com/EN/viewtopic.php ... 8&p=310269
http://forum.corel.com/EN/viewtopic.php ... 1&p=301582

Corel suggested you 'do the transparency after you have resize' - i *** you not

[Jean-Luc]

and in each case resized the image

As I don't see any "halo" I would know what is the resize value ? I resized down (50 %) and resized up (1000%) but don't see the defect.
Here, your file resized at 1000 %, pixel resize:

[brucet]

This looks very much like a sharpening artifact. I had a similar issue sometime back. I would do a backwards test and see if any of your settings have a sharpening component in them.

bruce

[hartpaul]

and in each case resized the image

As I don't see any "halo" I would know what is the resize value ? I resized down (50 %) and resized up (1000%) but don't see the defect.
Here, your file resized at 1000 %, pixel resize:

resized 1000pct.png

Are you talking about resizing - changing the actual number of pixels through a resampling process Image > Resize
or scaling the current image to view it larger or smaller, The halo is that grey area between the darker red and the green which is not visible in the Jasc PSP8 but is visible in all the others.

[flagpole]

I don't understand why nobody ever gets this. PSP invents new colours that aren't in the image and adds them.

I can't understand why everyone either can't see it or is not mad about it.

[flagpole]

and in each case resized the image

As I don't see any "halo" I would know what is the resize value ? I resized down (50 %) and resized up (1000%) but don't see the defect.
Here, your file resized at 1000 %, pixel resize:

resized 1000pct.png

You need to have transparency. i doesn't do it on a black background.

[Jean-Luc]

and in each case resized the image

As I don't see any "halo" I would know what is the resize value ? I resized down (50 %) and resized up (1000%) but don't see the defect.
Here, your file resized at 1000 %, pixel resize:

You need to have transparency. i doesn't do it on a black background.

I resized the transparent layer (the original image). The black you see is the transparency set to black (for visual purpose) instead of checkered. It is a screen capture.
What you see on your side is perhaps a zoom artifact (it is a known display defect in PSP).
See attached the original image at two different zoom levels. You see the defect at 250 % and not at 300 %. The defect doesn't exist in the file. It is only a screen draw problem.

[flagpole]

Buddy is not a zoom artefact.
You don't understand what I'm trying to explain. Approach it from that perspective.

Download this file:
https://drive.google.com/open?id=1eFYsE ... Dpea7UYBNH

resize by lets say 200% using bicubic or any other nonpixel resize method.

Observe the *** halo.

[SweetCryssy]

Firstly..I want to say...

heartpaul: Thank you for taking the time to check the image.. and not just in PSP2018..but in all the multiple versions along with your jurassic version of Jasc PSP8. I honestly thought maybe..it was just me or I was doing something wrong, or the program I was taking the hires shot in had issues. But..its good to know someone else actually had the same issues.

flagpole: I did search to see if there were any other posts about this issue but the search didnt like any of my keywords.. go figure. But YES..I'm mad..pissed..livid..and any other adjective you can throw in there. The fact they know this has been an issue in the past and shrugged it off..astounds me. I just paid $100 CAN just over a month ago for this program only to find that either they dont care about the issues...or have no clue how to fix them. I spent a week emailing back and forth with support on another issue only to finally give up as the support staff I was dealing with had no clue what he was doing and when he wanted to start making me do things I had already tried..all over again.. I figured it was time to throw in the towel. If something doesn't fix the issue the first time.. a second time isn't going to fix it as well.

As for the image.. its set on a transparent background. I wasn't trying to do anything special with it.. wasn't adding anything to it.. all I did was resize it..from 2048x2048 to 800x800..then take that resized image and paste it as a layer onto a background. Very simple..You'd think..this program could handle something so basic, without manipulating the integrity of the image and adding the "halo" around it. I'm done beating my head against my desk over it. I guess my option is to resize it in my old Jasc version and then move it onto my project in PSP2018.

[JoeB]

Buddy is not a zoom artefact.
You don't understand what I'm trying to explain. Approach it from that perspective.

Download this file:
https://drive.google.com/open?id=1eFYsE ... Dpea7UYBNH

resize by lets say 200% using bicubic or any other nonpixel resize method.

Observe the *** halo.

I downloaded the file. What I got was what looked like a blank white image. Closer inspection viewing only the layer with transparency showed there was white text on it so of course it didn't show up on the white background. So my first attempt was to place a black layer behind the text so I could see the text (see further below to see my attempts using the original white background). I resized using bicubic to both 200% and 1000%. I didn't see any halo in either case.

Then I downsized to 30%. Looking at it at 100% size it looks just fine with no halo. If I scale it up so that I can have a close look (because at 30% resize it's a small image) I can, of course, see some semi-transparent pixels at some of the edges, but that would be looking at individual pixels that are likely showing anti-aliasing IMHO. If I scale up the original far enough I can see the same thing, which is to be expected.

However, when doing it against the white background I can see greyish edges. Given that, other than anti-aliasing when shown against a black background the image looks as expected on a black background, I can only speculate that the greyish edges showing against a white background are the result of the display trying to interpret the difference between the solid white of most of the text and the semi-transparent white along edges. But that is only speculation on my part and others more expert than I likely have different opinions. By the way, the greyish edge is more prominent when downsizing than upsizing, which doesn't surprise me given that downsizing does have a greater propensity to emphasize the anti-aliased part of the text.

In no case, however, did I see "halos" as consistently sized as that shown in Hartpaul's image. The greyish edges vary in intensity depending on various points and curves of the letters.

I'm not sure what you meant by using "any other nonpixel resize method". Resizing using the resize dialogue means - if resizing larger - interpolation, or analyzing adjacent pixels and then adding pixels between the original pixels of the image and downsizing removes pixels. I interpret that to be a pixel method of resizing. Did you mean something else by that term?