Colorize
(Version 1.1)

[Place this text file in the VirtualDub plugins directory to make it available via the Help button on the filter configuration dialog box. The computer must have an HTML browser, such as Internet Explorer or Netscape, available in its search path.]

This filter provides the ability to convert a video to a monochrome video based on a selectable color. For example, the old-style brown photograph look can be easily obtained. The filter might better be called "monochrome filter" but I wanted to avoid people confusing it with the grayscale filter. Active filter preview is supported. Also, a color preview area is provided.

The following options are provided:

Hue: This option determines the hue of the desired base color. The units are the same as those used in the Windows color picker dialog box, i.e., 0 to 240.

Saturation: This option determines the saturation of the desired base color. The units are the same as those used in the Windows color picker dialog box, i.e., 0 to 240.

Maximum output luminance: This option determines the brightest value to be used in the output. The luminance range of the input frame is mapped to the luminance range of 0 to the value of this option. The units are the same as those used in the Windows color picker dialog box, i.e., 0 to 240, except that the user interface limits the value to 239 (see below).

Windows Picker: This button allows the parameters to be specified using the Windows common dialog. The value of luminance selected with the Windows picker will be used as the maximum output luminance. Do not select a luminance value of 240! That will produce a grayscale output.

For additional information, version updates, and other filters, please go to the following web site:

Filters for VirtualDub
http://www.geocities.com/Colosseum/Pressbox/8699/index.html

Donald Graft
February 2, 2001
(C) Copyright 2001, All Rights Reserved