unsharp masking

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un·sharp mask·ing

in radiography, superimposing a blurred negative of a radiograph to cancel large density differences, leaving fine detail more visible.
References in periodicals archive ?
Run the unsharp mask filter: Filter->Sharpen->Unsharp Mask.
I achieved the best processing using a combination of unsharp mask and a few dozen iterations of Lucy-Richardson deconvolution.
New Video Effects - Lens Flare, Light Rays, Film FX, Color Curves, Mirror, Remap, Deform, Convolution, Linear Blur, Black Restore, Levels, Unsharp Mask, Color Grad, and Timecode Burn filter.
Additionally, the software includes a full suite of post-processing tools, including RGB combine, digital development, Gaussian blur, deconvolution, unsharp mask, and wavelet sharpening routines.
While there are many different ways to sharpen an image, mostly I prefer to use the Lasso tool with some feathering to select an area I wish to sharpen, and then apply the Unsharp Mask filter with a radius of 1 to 2 pixels.
These features include accurate negative scanning, one of the industry's best unsharp mask tools, a true 48-bit density driven interface, closed loop calibration for press output, ColorSync support (Mac only) and the ability to use LAB correction.
I prefer this technique to Photoshop's Unsharp Mask because of the extended control RegiStax provides.
One important lesson I've learned after considerable experimentation is proper use of Adobe Photoshop's Unsharp Mask filter.
Once I'm happy with these results, I use the Unsharp Mask filter on the Luminosity layer, then flatten the image and save it as my final file.
All images included in Objects Collection Book 1 were opened in Photoshop, an unsharp mask filter was applied to the Objects Collection images to sharpen them for print in Objects Collection Book 1, and each image was saved in TIFF format for placement into layouts created in Quark XPress(TM).