Logo removal with x-logo
X-logo for VirtualDub or VirtualDubMPEG2 is available here (original home, currently down apparently) or here
An Avisynth version is available here (but that makes little sense, without a preview for fine adjustment)
The original guide did not work. here's in short how to use:
It is only really well working with transparent logos. Results with opaque logos are of little use with any utility. So I describe the transparent case here.
You need an image editor. Ulead Photoimpact for example, or if you're looking for a really good free one, PhotoFiltre (free for non commercial use). Save source image to clipboard and then open in the image editor with 'insert'.
Find a black frame and cut out the logo there, with some pixels of border around it. Write down the origin coordinates of the cut.
Save the cut as BMP file with coordinates inserted in the file name, for example:
cam2_x_44_y_51_0.bmp
Now use the cutout to make a black version of the logo itself, on a white background. How to do this depends on the image editor. The black should cover all the logo parts, including possible unsharp edges. Best use a color selection tool to mark the black parts of the original logo with a tolerance of 16, then fill this with white, invert the selection and fill this with black. (With PhotoFiltre, use the magic wand, then the "stroke and fill" command from the right click. Be sure to set selection anti aliasing to off!) Save the result as (for example)
cam2_x_44_y_51_2.bmp
Now add the Xlogo filter. You need to open the 2 files with it as the 'Black' and 'Interpolate' versions ('White' not needed) and to play around a little with the settings (use the preview). Then it may look like this:
The feather parameter probably needs
to be set to 1 before each conversion start. It is apparently
not saved by the filter.
White level and interpolation are used to make the logo really
disappear in all cases. Interpolation usually can be almost omitted.
For blur, small values (1 or 2) will be sufficient.
Good Luck
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