A HYBRID DATA COMPRESSION SCHEME FOR IMPROVED VNC
#1

Presented by:
VAISUNU DEVI P
SANGEETHA M S
SUNIL J

[attachment=10857]
A HYBRID DATA COMPRESSION SCHEME FOR IMPROVED VNC
WHAT IS VNC..?

VNC stands for Virtual Network Computing.
 Remote display system
Platform independent system
Ultra thin client system
HYBRID DATA COMPRESSION SCHEME FOR VNC
To enable VNC over slow connections.
Provide reasonable speed and image quality.
High demand for a bandwidth optimized version of VNC.
APPROACHES FOR HYBRID TECHNIQUE
Segmentation based image coding.
Memory coding.
SEGMENTATION
 The screen image is divided into predefined regions and applies encoding schemes to each area according to the region characteristics.
 This segmentation uses Block Based segmentation.
SEGMENTATION FLOWCHART
MEMORY CODING

 Correlation of screen data in consecutive frames is exploited where multiple occurrences of similar image contents are detected.
MEMORY CODING FLOWCHART
APPLICATIONS

 System administration, IT support and helpdesks
 Mobile user, both for hot desking within the enterprise and also to provide remote access at home, or on the road
CONCLUSION
 A hybrid algorithm that improves the existing software package to enable VNC over slow connections and present a reasonable speed and image quality.
 This leads to significant savings in bandwidth.
 Improved image quality and faster transmission speed has been observed visually.
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