Introduction
Viewing Pictures
Filters
Image Adjustment
Other Features
Menu Guide
Tool Buttons
Straighten
Unsharp Mask
Straighten pictures by up to ±10 °. Choose lower values to rotate the picture to the left, higher val- ues to rotate it to the right.
Straighten tool
To straighten pictures manually, click the straighten tool in the image adjust- ment palette and drag the cursor parallel to a line in the preview (this option can not be used with thumbnails; page 10). The image will be rotated by up to ±10 ° to
make the reference line horizontal or vertical, and the degree of rotation will be displayed in the text box in the image adjustment window.
Increase sharpness by making edges more distinct. The contrast of edges is increased while other areas are left untouched.
qDelete: Delete the
wMove Up/Move Down: Move the currently- selected mask up or down in the unsharp mask list.
eUnsharp mask list: A list of unsharp masks, identified by color channel, intensity, halo width, and threshold (e.g., “Red, 50%, 10%, 0”). Masks apply in the order listed; to change the order, use the up/down but- tons.
rColor: Choose the color channel to which the unsharp mask applies.
tIntensity: The amount edge contrast will be increased.
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Drag cursor parallel to reference line | Image rotated to make reference line horizontal |
AImage Size
Straightening does not change the dimensions of the image. Any portions of the image that do not fit in its original dimensions are cropped out, while areas that have been added to the image are filled in black.
yRadius: The greater the radius, the wider the edges in the sharpened image will appear. u
uThreshold: The limit at which sharpening will
be applied. If the threshold is zero, sharpening will apply to all pixels in the image. Increasing the threshold increases the amount of contrast that must be present between pixels before the mask will be applied, with the result that only more distinctly contrasting edges will be affected.
Capture | 29 |
