2011

Table Of Contents
Description:Tool:
Applies a blur to an imagesee About Blurs on page 385.Blur
Accurately simulates the defocus effect of a real camera on an HDR im-
agesee Lens Blur Tool on page 400
Lens Blur
Removes impulse noise with an edge-preserving smoothing filtersee
Median Tool on page 406.
Median
Increases clarity of an imagesee Sharpen Tool on page 408.Sharpen
Provides more sharpening control of fine detail in an imagesee Unsharp
Mask on page 408.
Unsharp
Mask
Remove Dust Tool
Use the Remove Dust tool to remove dust, dirt, hair, and scratch artifacts from
sequences of images. Dust removal, encompassing what is sometimes called
dust-busting, dust repair, scratch removal and scratch repair, is traditionally
a time-consuming task, requiring visual inspection and manual correction
steps for each frame of film or video. This tool provides you with a means to
automate this task as much as possible, and to easily tweak the results
manually. The tool automatically detects dust and scratches, and automatically
repairs them. You can view the results of the detection phase and easily correct
anything using a simple mouse stroke.
The Remove Dust tool detects dust in images and removes the dust from the
images. The tool has a primary color image input and outputs two images,
the repaired color image and a mono-channel defect matte. An optional second
input can be used to specify the defect matte as a mono-channel image, and
any dust detected by the tool is added to the dust supplied by the defect matte.
If the defect matte input is not present, the tool initializes the defect matte
to empty. Optional third and fourth inputs supply forward and/or backward
motion vectors to the tool which it can use for the detection and/or the
correction phase.
380 | Chapter 17 Image Processing Tools