Context-based multiple bit-stream image transmission over noisy channels

2000 ◽  
Author(s):  
Lei Cao ◽  
Chang W. Chen
Keyword(s):  
Image Transmission ◽  
Noisy Channels ◽  
Bit Stream

scholarly journals A Novel VLSI Architecture for SPHIT Encoder

2013 ◽  
Vol 10 (4) ◽  
pp. 1522-1530
Author(s):  
Haritha Motupalle ◽  
Syed Jahangir Badashah
Keyword(s):  
Vlsi Architecture ◽  
Image Transmission ◽  
Set Partitioning ◽  
Compression Scheme ◽  
Storage And Retrieval ◽  
Test Circuit ◽  
Hardware Description ◽  
Image Storage And Retrieval ◽  
Spiht Algorithm ◽  
Bit Stream

In this Paper we propose a highly scalable image compression scheme based on the set partitioning in hierarchical trees (SPIHT) algorithm. Our algorithm called highly scalable SPIHT (HS-SPIHT), supports spatial and SNR scalability and provides a bit stream that can be easily adapted (reordered) to given bandwidth and resolution requirements by a simple transcoder (parser). The HS-SPIHT algorithm adds the spatial scalability feature without sacrificing the SNR embeddedness property as found in the original SPIHT bit stream. HS-SPIHT finds applications in progressive Web browsing, flexible image storage and retrieval, and image transmission over heterogeneous networks. Here we have written the core processor Microblaze is designed in VHDL (VHSIC hardware description language), implemented using XILINX ISE 8.1 Design suite the algorithm is written in system C Language and tested in SPARTAN-3 FPGA kit by interfacing a test circuit with the PC using the RS232 cable. The test results are seen to be satisfactory. The area taken and the speed of the algorithm are also evaluated.

Sign in / Sign up

Export Citation Format

Share Document