1/29/2024 0 Comments Topaz gigapixel ai 4![]() Here is the 100% pixel view of a Transamerica Pyramid crop with 4 times upsizing in Genuine Fractals:Įdges are cleaner. ![]() I found it a significant improvement over Photoshop in making large prints. As a result, Genuine Fractals did a great job on keeping edges sharp, preventing lines from getting jagged, and keeping curved lines smooth. ![]() When you enlarge the image, the surface area of each polygon is enlarged, but not their edges. You can think of it as a collection of polygons. Genuine Fractals works by transforming the image data into a vector representation that is independent from resolution (hence “fractal”). I believe it was the best upsizing app for a decade. Prior to trying Topaz Gigapixel AI, I had settled on Genuine Fractals, which was renamed Perfect Resize and then ON1 Resize after its acquisition by onOne Software. There are a number of third-party apps for resizing. Here is the 100% pixel view of a Transamerica Pyramid crop with 4 times upsizing in Photoshop: That is a problem because edges contribute most to the perception of sharpness. That makes the edge more gradual, therefore it doesn’t appear as sharp. If an edge transition takes place over, let say 3 pixels, in the image resulting from a double enlargement, that same edge transition takes place over 6 pixels regardless of the interpolation method used. Resizing by interpolation works roughly as follows: the pixels are spread out, and then an algorithm is used to fill in the spaces in between. If you want to try it, one of the more popular apps implementing it is the free IrfanView. No single method always gives the best results – Adobe would have dropped others! Unfortunately, Photoshop is not offering Lanczos resampling which may often be the best interpolation method. I have found the differences to be quite minor, with “Bicubic smoother” generally, but not always, the best. Some of them are labeled “enlargement” or “reduction” so you know which ones are appropriate for the task. When you open Photoshop’s Image Size window, there are now no less than 8 choices of resizing methods under the pulldown menu next to “Resample”. If you send an image with low resolution to a printer, the printer driver applies its own upsizing, which may be inferior to app-based upsizing and leaves you without control of the process and the output sharpening – my Epson 9800 does best when fed with native resolution files (360 ppi). On the other hand, upsizing of images files is necessary for making large prints if they are to support close distance viewing. Upsizing images is almost never necessary if they are to be displayed online, or even used in magazines or books.īy the way, that was the coolest book cover: the publisher created a half-inch deep 3D cut-out from the horizontal version of the photograph, which worked really well with this scene because the telephoto had collapsed the scenes into slices of depths. The San Francisco Bay is not a top sailing spot for nothing. ![]() I’ve since returned several times to the same spot with better gear, but never observed again the glassy water that created the reflection of the bridge. I photographed it in January 2004 with a 70-200mm lens and a 1.4x teleconverter on a newly bought Canon EOS Digital Rebel, resulting in a focal length equivalent of 450mm for the vertical image. This is because creating such an alignment of the city skyline with the bridge required a quite distant and un-intuitive viewpoint near the Pt Bonita Lighthouse, more than 2.5 miles away from the bridge. The photographs look straightforward enough, but if you look around the Internet, you won’t see them replicated often for such an iconic subject. In this post, the third and last in a series devoted to the Topaz suite of AI-based tools, I examine Topaz Gigapixel AI upsizing capabilities and limits using a pair of images of the Golden Gate Bridge. Even with such a basic task, there is much to be gained by using appropriate apps. If you are making prints, sooner or later you’ll have to upsize the image file.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |