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Table Of Contents
13.14 Optimization
How are images optimized
Images are either Vector based or Raster based. Vector based images are affected not by image size, but by
image complexity. Conversely, raster based images are described on a dot-by-dot basis and the image is
directly affected by image size and by the degree of precision and digitalization.
Vector based images take full advantage of printer resolution, whereas raster based images are affected by
printer resolution. However, PDF or EPS files may contain large raster based images, with the resulting vector
based benefits being non-existent.
13.14.1 Displaying the Image
PlanetPress Design never takes the initial resolution in which the image was created into consideration. You
must tell PlanetPress Design the resolution it should use to display the image on the page. You must tell
PlanetPress Design to use either the fixed or automatic (default) resolution mode to display the image.
Automatic Resolution: In this mode, PlanetPress Design automatically calculates the necessary resolution to
contain the entire image within the image object. The user can resize the box object and the image will
automatically adjust.
Fixed Resolution: The image is displayed at a predefined resolution in PlanetPress Design, and assumes a
printer resolution of 600 dpi.You cannot resize the image on the page, and EPS and PDF files are displayed at
their defined sizes.
13.14.2 Optimization Factors
Larger images take longer to print are influenced by resolution and color level. Color images are always larger
than grayscale images. However, image output has resolution limits, and a higher resolution does not
necessarily guarantee a higher quality print job, whether you are printing in color or in grayscale.
13.14.3 Fit Setting
Guideline: Select Constant resolution as the fit setting for the image in the picture object whenever
possible. Avoid Best fit as the fit setting whenever possible.
Applies to: Bitmapped, vector, and metafile images
Advantage: Reduces the amount of processing the image requires at runtime. Constant resolution is
the least time-consuming of the fit settings since it does not require any scaling of the
image at runtime. Best fit is the most expensive in terms of execution time as it requires
calculating the image size that yields the best fit with the picture object.
How to
apply it to
static and
dynamic
images:
You select the fit setting for both static and dynamic images in the picture object that
references the image.
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