HP Remote Graphics Software 5.4.8 User Guide

Image quality

RGS provides high-quality, high-performance image compression and decompression. Image

compression is performed on the Remote Computer to reduce the network bandwidth requirements—

this enables RGS to be used on standard networks. Image decompression is performed on the Local

Computer.

RGS supports setting of the Image quality on a per-Receiver basis. Image quality is adjusted using the

slide bar in the Remote Display Window Toolbar (see

Figure 2-17 Image quality slide bar in the

Remote Display Window Toolbar on page 29). As the image quality is increased toward 100, the

amount of compression decreases, and the required network bandwidth increases. If a Receiver is

supporting multiple Remote Display Windows (see

Many-to-one connection on page 18) the slide bar in

any Remote Display Window Toolbar can be adjusted—the slide bars in the other Remote Display

Windows will automatically track.

The Boost checkbox was added beginning with RGS 5.2.6, and requires that both the RGS Sender and

Receiver be version 5.2.6 or later. Checking the Boost checkbox will improve (boost) image quality for

certain types of images, primarily images containing significant amounts of text or lines. For further

information, see

Remote Display Window Toolbar on page 106 .

Figure 2-17 Image quality slide bar in the Remote Display Window Toolbar

NOTE: Even with an image quality of 100, RGS still performs some image compression to reduce the

network bandwidth requirements. While the image quality on the Receiver will usually appear visually

lossless to the user, the actual image data sent over the network will be “lossy” to a limited extent. The

exception is the Sender codec JPEG-LS which is mathematically lossless. See

Sender general properties

on page 200 for more information.

Beginning in RGS 5.4.5, the image quality slider control and Boost check box have been duplicated in

the Receiver Advanced > General tab under the Experience area. These controls are

synchronized with the controls in the Remote Display Window Toolbar. The added quality slider

and Boost check box provide a convenient location for the user to adjust best desired image quality

while adjusting the Interactive Experience controls. See

General tab Experience section on page 120

for more details.

Image quality