Bedienungsanleitung Adobe PHOTOSHOP ELEMENTS (Seite 260 von 296) (Englisch)

602287

260

Zoom out

Zoom in

Vorherige Seite

1/296

Nächste Seite

CHAPTER 12

252

Saving Images

PNG format

Developed as a patent-free alternative to GIF,

Portable Network Graphics (PNG) format is used

for lossless compression and for display of images

on the World Wide Web. Unlike GIF, PNG

supports 24-bit images and produces background

transparency without jagged edges; however, some

Web browsers do not support PNG images. PNG

preserves transparency in grayscale and RGB

images. For information on when to use PNG

format to optimize images, see “Choosing a ﬁle

format for optimization” on page 227.

To save a ﬁle in PNG format:

1 Choose File > Save As, and choose PNG from

the format list.

2 Specify a ﬁlename and location, select saving

options (as described in “Saving images” on

page 246), and click Save.

3 Select an Interlace option, and click OK:

• None to create an image that displays in a Web

browser only after downloading is complete.

• Interlaced to create an image that displays

low-resolution versions in a browser while the

full image ﬁle is downloading. Interlacing can

make downloading time seem shorter and assures

viewers that downloading is in progress. However,

interlacing also increases ﬁle size.

Raw format

Raw format is a ﬂexible ﬁle format for transferring

images between applications and computer

platforms. Raw format consists of a stream of bytes

describing the color information in the image.

Each pixel is described in binary format, with 0

representing black and 255 white. You can specify

the ﬁle extension (Windows), ﬁle type (Mac OS),

ﬁle creator (Mac OS), and header information.

In Mac OS, the ﬁle type is generally a four-

character ID that identiﬁes the ﬁle—for example,

TEXT identiﬁes the ﬁle as an ASCII text ﬁle. The

ﬁle creator is also generally a four-character ID.

Most Mac OS applications have a unique ﬁle

creator ID that is registered with the Apple

Computer Developer Services group.

You can save the image in an interleaved or nonin-

terleaved format. If you choose interleaved, the

color values (red, green, and blue, for example) are

stored sequentially. Your choice depends on

requirements of the application that will open

the ﬁle.

The header parameter speciﬁes how many bytes of

information appear in the ﬁle before actual image

information begins. This value determines the

number of zeros inserted at the beginning of the

ﬁle as placeholders. By default, there is no header

(header size = 0). You can save the ﬁle without a

header and then use a ﬁle-editing program, such as

HEdit (Windows) or Norton Utilities

(Mac OS),

to replace the zeros with header information.

Targa format

TGA (Targa

) format is designed for systems using

the Truevision

video board and is commonly

supported by MS-DOS color applications. When

saving an RGB image in this format, you can

choose a pixel depth of 16, 24, or 32 bits per pixel.

Missbrauch melden von Frage und/oder Antwort

Libble nimmt den Missbrauch seiner Dienste sehr ernst. Wir setzen uns dafür ein, derartige Missbrauchsfälle gemäß den Gesetzen Ihres Heimatlandes zu behandeln. Wenn Sie eine Meldung übermitteln, überprüfen wir Ihre Informationen und ergreifen entsprechende Maßnahmen. Wir melden uns nur dann wieder bei Ihnen, wenn wir weitere Einzelheiten wissen müssen oder weitere Informationen für Sie haben.

Adobe PHOTOSHOP ELEMENTS Seite 260

Brauchen Sie Hilfe? Stellen Sie Ihre Frage.

Missbrauch melden von Frage und/oder Antwort

Art des Missbrauchs:

Forenregeln

Neu registrieren

Andere Handbücher von Adobe PHOTOSHOP ELEMENTS

Das Handbuch wird per E-Mail gesendet. Überprüfen Sie ihre E-Mail.

Ihre Frage wurde zu diesem Forum hinzugefügt

Info