Gimp - 2.4 Guía Del Usuario
GNU Image Manipulation Program
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15.10.11.2
Options
Figure 15.152: ‘Newsprint’ filter options
Preview All your setting changes will appear in the Preview without affecting the image until you click on OK. Note that the
preview displays the whole image, even if the final result will concern a selection. Don’t keep Do Preview checked if your
computer is too much slow.
computer is too much slow.
Resolution This group controls the cell size, either by setting the input and output resolutions, or directly.
Input SPI Input SPI : Resolution of the original input image, in Samples Per Inch (SPI). This is automatically initialised
to the input image’s resolution.
Output LPI Output LPI: Desired output resolution, in Lines Per Inch (LPI).
Cell Size Cell Size: Resulting cell size, in pixels. Most often you will want to set this directly.
Screen
Separate To RGB, CMYK, Intensity Separate To RGB, CMYK, Intensity: Select which colorspace you wish to operate
in. In RGB mode, no colorspace conversion is performed. In CMYK, the image is first internally converted to CMYK,
then each colour channel is separately halftoned, before finally being recombined back to an RGB image. In Intensity
mode, the image is internally converted to grayscale, halftoned, then the result used as the alpha channel for the input
image. This is good for special effects, but requires a little experimentation to achieve best results. Hint: try CMYK
if you don’t know which to go for initially.
then each colour channel is separately halftoned, before finally being recombined back to an RGB image. In Intensity
mode, the image is internally converted to grayscale, halftoned, then the result used as the alpha channel for the input
image. This is good for special effects, but requires a little experimentation to achieve best results. Hint: try CMYK
if you don’t know which to go for initially.
Black Pullout (%) Black Pullout (%) When doing RGB->CMYK conversion, how much K (black) should be used?
Lock Channels Lock Channels: Make channel modifications apply to all channels.
Factory Defaults Factory Defaults: Restore the default settings which should give pleasing results.
Angle Angle: Cell grid angle for this channel.
Spot Function Spot Function: Spot function to be used for this channel (see preview in blue cell-boxes).
Antialiasing Proper halftoning does not need antialiasing: the aim is to reduce the colour depth after all! However, since this
plugin is mainly for special effects, the results are displayed on screen rather than by a black/white printer. So it is often
useful to apply a little anti-aliasing to simulate ink smearing on paper. If you do want to print the resulting image then set
the antialising to 1 (ie, off).
useful to apply a little anti-aliasing to simulate ink smearing on paper. If you do want to print the resulting image then set
the antialising to 1 (ie, off).