American Audio DCD-PRO240 User Manual download pdf (Page 103)

Freeway Reference: Working with Graphics

103

Combining images with different export formats

It is possible to combine graphic items that have different

export formats. Since the new image takes on the characteristics

of the underlying box, the export format options shown in the

Inspector palette depend on the format of the underlying

box. When you select a graphic item that is combined with

other items and then alter the settings in the Combined

Graphic panel, you are only altering the settings for the

underlying box. If you subsequently separate the boxes, the

changes you made in the Combined Graphic panel will only

be retained by the underlying item.

Images exported as JPEG

The JPEG format does not support transparent pixels. If you

combine graphic items where the underlying item is set to

export as JPEG, or use a non-rectangular box for a JPEG image,

the pixels which Freeway inserts to fill out the group are

opaque and will obscure any background image for this page.

Slicing graphics

Freeway’s image handling capabilities can be used to great effect

to optimize imported graphics. Using a technique called slicing,

you can improve download times and image quality at the same

time. In many ways this is similar to the technique of slicing

found in Adobe Photoshop and ImageReady, except there is no

need to import lots of individually optimized slices as all the

slicing is performed within Freeway itself.

Note: The reproduction methods used for this Reference may not be

able to show the improvements made to the graphic we’ve used in

our example.

The goal with our example is for the main image to use as few

colors as possible to minimize the file size, but to optimize areas

of the image that can use a higher quality setting.

We will use Freeway to slice the image into separate parts

using different compression settings. To help visualize how the

compression settings are working, and see the output file sizes

for the sliced images, turn on Graphics Preview from the View

menu. Now, as we work, Freeway will show the effect of different

settings to the selected image, and show the file size in the Item

Output panel of the Inspector palette.

1. Select the image.

2. In the Inspector palette, switch off the Combine Graphics checkbox.

3. Now we can select different areas for special treatment. We can either choose to select areas to be of higher quality, or choose areas

that can be set to lower quality. The choices depend on the image itself.

4. Use the Graphic tool to draw several graphic boxes that define the head, body and legs of the robot.

5. Turn off the Combine Graphics checkbox for each new box in the Inspector palette. At the same time, set the image compression

to JPEG and leave the Quality setting to the default. These image slices will compress on export using these settings.

The lower box contains the

exported JPEG of the lighthouse

photo and text on the left. JPEG

does not support transparent pixels,

so the background is obscured by

the opaque area of the exported

image.

Various areas of

this graphic can be

reduced in quality in

order to improve ﬁle

sizes and download

times.

1 2 ... 98 99 100 101 102 103 104 105 106 107 108 ... 249 250

Comments to this Manuals

No comments

American Audio DCD-PRO240 User Manual Page 103

Comments to this Manuals

Related products and manuals for CD players American Audio DCD-PRO240