Image Formats - Sony Ericsson P900 White Paper

Multimedia

Image formats

The table below explains the various image formats supported by the P900, together with indicative file sizes
for a QVGA (320 x 240 pixel) image.
Format Example
File Size
BMP 226 KB
GIF 42 KB
GIF 210 KB
(animated) (5 frames)
JPEG 13 KB
(.JPG)
MBM
PNG 166 KB
WBMP 23 KB
Colour Screen
Images having more than 65K colours will be
adjusted to display optimally within the
capabilities of the P900 screen.
Images larger than the display area will
generally be scaled to fit the application
window.
The Image and Video Viewers make use of
the whole screen (320 x 208 pixels) in Wide
Screen mode.
Description
Microsoft Windows Bitmap. A graphics format defined by Microsoft
supporting 1, 4, 8 or 24 bit colour depth. No compression, so files can be
very large. Used for icons and very small images.
Graphics Interchange Format. Highly compressed by limiting the colour
palette to 16 or 256 colours. GIF is therefore good for icons and
diagrams. When a Jotter sketch is sent as an e-mail attachment, the GIF
format is used.
A GIF animation containing a number of images in a timed and repeating
sequence. Some P900 applications display only the first image in the
sequence.
An image compression format managed by the Joint Photographic
Experts Group. The format supports various degrees of compression,
enabling different quality/file-size balances to be provided in one
standard. JPG files support millions of colours and are therefore good for
'real life' photographs.
Multi Bitmap. This is a Symbian OS format for colour and greyscale
bitmap images.
Portable Network Graphics. PNG compresses images with millions of
colours no loss of detail, but has comparatively large file size. It is not
commonly used.
Wireless BitMap. Part of the WAP specifications, an image format
optimized for small mobile devices. The P900 supports Black and White,
2-bit greyscale and 6-bit colour modes, according to ETSI 3GPP TS
23.040
Screen Specification
Type:
Size, flip closed:
Size, flip open:
Pixel Size:
Pixel Density:
Colour depth:
Surface:
Illumination:
34
P900/P908 White Paper, December 2003
TFT
208 x 208 pixels, 40 x 40 mm
208 x 320 pixels, 40 x 61 mm
0.192 mm
132 DPI (Dots Per Inch)
16-bit (65K colours)
Touch-sensitive
Back-light
LZT 108 6643 R1G