I just completed upsizing, and comparing, a 3872 X 2592 pixel image to 9000 X 6025 using CS6 (Bicubic Automatic), Picture Window Pro (Lanczos 8 X
and Perfect Resize. I recently purchased CS6 and Perfect Resize and used to use Genuine Fractals, so wished to do a current comparison. If anyone is interested, and I had to zoom in real close (400%) to see it, PWP produced the sharpest and best result (the scene was of a forest with sun-rays breaking through the background). However, the purpose of this post has less to do with the results of the comparison than with a somewhat strange anomaly with the Perfect Resize version.
I used PWP to lay each image on top of the others, so I could see and compare the exact same area as I scrolled through the images. I noticed the PR image jumping a bit out of alignment with the other two, so zoomed in as noted above and was able to see the image in sections (only way I can describe it is as if a bunch of tiles were laid side by side), however, it is as if the sections were not exactly adjacent to each other and there is a couple pixels added between each section (both horizontally and vertically). Funny thing is, the images are all exactly 9000 X 6025, so I can't see how some pixels were actually added, but there is a noticeable jump along these section boundaries.
Tried this a few times to see if the first PR image was corrupt, but this same thing was observed each time.
Does anyone know enough about Perfect Resize to tell me what is going on and if the program does up-ressing by cutting the image into sections, enlarging, then "relaying" them (and perhaps the relaying is not done perfectly)?
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