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Post by Bailey on Feb 11, 2019 11:33:29 GMT
Thank you for sharing your results hmca 
Yes. AI Gigapixel does an amazing job enlarging but unfortunately the quality of the enlargement is hard to see on a monitor using a posted downsized image.
15in square at 360ppi = 5400px x 5400px.
The only way to evaluate the quality of the enlargement on a screen is to view the image at 100%. That is the only way you can see every pixel unless you have a screen larger than the pixel dimensions of the image.
The only thing that matters is if you are happy with the print, which you obviously are. I am happy you got an excellent result with your enlargement process and subsequent print.
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Post by hmca on Feb 11, 2019 16:23:30 GMT
So would this work then, Bailey ? I opened the enlarged image on my desktop and then took a screen shot of part of it.  |
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Post by kdcintx on Feb 11, 2019 19:30:37 GMT
Very nice photo, Helen, and the enlargement looks great. I've had excellent results with AI Gigapixel and use it mainly for smartphone photos. I came across this free online enlargement service for digital photos Image Processing. It would be interesting to see how it compares to the enlargement using Gigapixel. |
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Post by hmca on Feb 11, 2019 21:07:11 GMT
Interesting site, Karen. Do you know of anyone who has used it?
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Post by Bailey on Feb 11, 2019 22:26:40 GMT
So would this work then, Bailey ? I opened the enlarged image on my desktop and then took a screen shot of part of it. Unfortunately no not really, for the same reason I posted earlier. As far as I am aware, each physical pixel on a screen can display the colour (rgb value) of only one pixel from an image file. When you open an image that is larger than your screen size into any editor you are not looking at every single pixel in the image. You are looking at a downsized version of it. However, if you apply any adjustments to the image (eg. Hue/Saturation adjustment layer without any masking) they are applied to every pixel in the image. The only way you can view every pixel of a large image in the editor is to view it at 100% magnification and then pan around the image. The above is another reason why publishing images larger than viewers' screens is redundant because the image will be scaled down to fit on the screen (but that's another issue). Perhaps set your image to 100% magnification (which means you see only a small portion at a time in the editor) and post a screenshot of it. Or if you are comfortable uploading the full sized image (5400px x 5400px) then anyone interested can download it and view it at 100% in their own editor to properly evaluate the quality of the enlargement. When an image is downsized, either by the creator or by a viewer's browser, pixels that might show any artifacts from any enlarging process could be thrown away by the downsizing process. If you have time, perhaps just post a 100% crop of the same section of the before and after images to give viewers an idea of the quality of the enlarging process. hth |
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Post by kdcintx on Feb 11, 2019 22:53:29 GMT
Interesting site, Karen. Do you know of anyone who has used it? I tried a comparison. Here are the original smartphone version, the free image processing version, and the Gigapixel version at 100% crop.
Original
Free version
Gigapixel version i.ibb.co/F6gZ7m0/Painting-Gigapixel-output200.jpg |
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Post by kdcintx on Feb 11, 2019 22:56:16 GMT
It is a free alternative for those who don't have Gigapixel.
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Post by hmca on Feb 11, 2019 23:39:32 GMT
Bailey.....I was afraid you were going to say something like that  . I am working on a bunch of pictures from my granddaughter's meet this weekend so don't want to spend any more time on this. I think what you said here is important. The only thing that matters is if you are happy with the print, which you obviously are. I am happy you got an excellent result with your enlargement process and subsequent print.
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Post by hmca on Feb 11, 2019 23:40:48 GMT
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Post by Bailey on Feb 11, 2019 23:44:49 GMT
No problem hmca
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Post by Sepiana on Feb 11, 2019 23:57:32 GMT
I came across this free online enlargement service for digital photos Image Processing. kdcintx, thanks for sharing! It looks very promising. I do have ON1 Resize (latest version) but I am going to check this out.
I noticed that UTA is behind it; they are on the cutting edge in this field of research.
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Post by Bailey on Feb 12, 2019 0:01:50 GMT
I came across this free online enlargement service for digital photos Image Processing. Thank you for sharing kdcintx I had a quick look at it. Unfortunately I don't like that you have to upload images to their server. They say they keep them for only 7 days but who knows if they are really deleted and during the 7 days they have your image you have no control over who has access to it. Just something people should be aware of before using any online services that involve uploading potentially sensitive personal information/images. |
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. I am working on a bunch of pictures from my granddaughter's meet this weekend so don't want to spend any more time on this. I think what you said here is important.
