When you save a file to the JPEG format from any software package (such as scanning software), the file information is compressed to create a smaller file. The compression produces artifacts—unwanted image problems—that can appear as halos or color leakage beyond the edges of objects, checkerboard problems on smooth backgrounds, or blocky-looking areas in an image. Use Paint Shop Pro’s JPEG Artifact Removal command to restore a JPEG image to its original appearance.
You can apply the JPEG Artifact Removal command to a file in any format. For example, if you have saved a JPEG file as a Paint Shop Pro (.PspImage), you can still apply the command.
Note: Because JPEG compression discards image information, there are limits to how well the image can be restored.
To remove JPEG artifacts:
Make sure the image has no selections. If necessary, choose Selections > Select None. The JPEG Artifact Removal command is not available if the image contains a selection.
Choose Adjust > Add/Remove Noise > JPEG Artifact Removal.
In the preview window, center the area of the image where the artifacts are most apparent.
In the Strength group box, set the strength of correction to Low, Normal, High, or Maximum. For best results, try each option and examine all areas of the image to see which strength setting works best.
Set the Crispness to determine the amount of detail that is restored, from 0 (the least) to 100 (the most). Start with 50 and adjust the value until the image looks the most natural. This option determines how much fine-detail information the artifact removal attempts to create. The recreated information can only be a guess since the original information is lost. Excessive crispness may produce fine dots in the image.
Click OK.
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