![]() The right half has got in Photoshop 3 filterings: ![]() In the next image the right half is aggressively sharpened and the left half is the original: I guess a part of the usharpness was blur which is caused by something else than low resolution. Several commercial image enlargening programs are available as Photoshop plugins, but as said, Smilla is free.ĪDD: The enlargened half of my screenshot still looks sharp although it is scaled down to the same size as the original image half. The only harm is that it's not Photoshop. The pixel dimensions are lifted to 500% (=2500x2500) and the enlargening preset "painting" was used.Ībout the result: The program hasn't removed colored areas, there's no new flat colored zones at the fuzzy borders and the geometric forms of the borders look quite the same as in the original. The left half of the image is your original, the right half is enlargened with Smilla (freeware). It increases the pixel resolution - not like image resize in Photoshop, but trying to guess where should be a sharp border or a thin line. ![]() To remove artifacts with pixelization (squares of 8x8 pixels), as in the above example on the left side, you need to specify next parameters: "Artifacts removal intensity" – "normal", "Pixelization removal intensity" – "3", "Denoising intensity" – "0".Įxample of photo with a light noise before and after removing on this site:įor this noise reduction you need to set the following settings: "Artifacts removal intensity" – "off", "Pixelization removal intensity" – "0" and "Denoising intensity" – "5".Īlso you can try this combination of settings: "Artifacts removal intensity" – "normal", "Pixelization removal intensity" – "3", "Denoising intensity" – "5".ĭepending on the size and quality of the original image, settings can be different and, the larger the image, the more you usually need to increase parameters, but not too much, so that the picture does not to be very smoothed.The third way is to use an image enlargening program. To get the same result as in the above example on the right side, was used all settings, installed by default.Įxample of artifacts with pixelization after high compression of jpeg image, before and after improvement: Also on this site it is possible to know, what quality level was used in already compressed jpeg image.Įxample of a photo with jpeg artifacts before and after improvement, the difference is especially visible inside the flower bud, when you click on any of all examples below, you can open their copies, enlarged in 3x times for clarity: ![]() And after processing on this page, you can, for example, enlarge the processed image (if it is too small), slightly add color saturation or sharpness and so on, but in this case it is better to use the PNG-24 as an intermediate format, to avoid losing of image quality after each processing step. It is recommended to use the removing of jpeg artifacts before any manipulations with the image. To remove jpeg-artifacts, you need to specify a picture no larger than 2.2 Megapixels (≈1920x1080) on your computer or phone and then click the OK button at the bottom of the page, wait a couple of seconds and download the result. Removing of JPEG artifacts, pixelization and of small noise after compression online
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