Lens Distortion Corrector - v1.0,  © 2004 Richard Rosenman Advertising & Design. Release date: 06/05/03, Updated --/--/--.


INSTALLATION:

Simply unzip "lenscorrect.zip" and copy "lenscorrect.8bf" to your "\Photoshop\Plug-Ins\" folder, or whichever plugin folder your host program uses. Load your program, open an image, go to the plugins menu and select the plugin.


DESCRIPTION:

This filter produces lens distortion correction.

When digitizing images from any camera source, lens distortion (barrel / pincushion) becomes an unavoidable factor. By applying distortion correcting algorithms to the image, the amount of distortion can be minimized, and sometimes even corrected.

Horiz, Vert: These sliders control the amount of distortion correction introduced in both the horizontal and vertical axes respectively.

Lock Vert>Horiz: Locks the vertical slider to the horizontal for proportional distortion correction.

Color out-of-range: With pincushion distortion, pixels that are grabbed from outside the image boundaries are colored using the selected color.

Presets: This drop-down menu defines what type of camera lens has been used and presets the appropriate distortion correction.

NOTE: Custom allows user input while all other settings lock sliders to preset values.

Out-of-range color: This color specifies the out-of-range color.

Fit: This pushbutton stands for fit-to-window. When this is selected, the image is scaled to compensate for distortion corrected size differences.

Realtime: Applies all effects (in realtime) on 'mouse drag' instead of on 'mouse release'.

R,G,B: These pushbuttons toggle which color channels to output. Sub-Sampling: Specifies what type of pixel sub-sampling to use. (Nearest Neighbor being fastest, Bicubic being best.)

Special thanks to Paul Bourke for allowing his algorithm to be ported to this plugin. For more information, please visit Mr. Bourke's site at http://astronomy.swin.edu.au/~pbourke/.


KNOWN BUGS:

None


FIXES:

None.


HOMEPAGE:

http://www.richardrosenman.com
