Dissertation > Excellent graduate degree dissertation topics show

Research on All Phase Biorthogonal Transform and Its Applications in Image Coding

Author: ZhaoSaiYuan
Tutor: HouZhengXin
School: Tianjin University
Course: Signal and Information Processing
Keywords: all phase biorthogonal transform (APBT) discrete cosine transform (DCT) JPEG blocking artifacts progressive image coding
CLC: TP391.41
Type: Master's thesis
Year: 2008
Downloads: 49
Quote: 0
Read: Download Dissertation

Abstract


Orthogonal transform has been widely applied to digital signal processing, from data compression to signal restoration. Meanwhile, reports on biorthogonal transform (BT) are greatly less than the ones on orthogonal transform. Recently, one new member in the family of BTs, named all phase biorthogonal transform (APBT), has become a highlight due to its reasonable performance in image coding. The objective of this paper is to make an improvement of APBT’s coding performance and to enrich its applications in image coding.All phase (discrete cosine / inverse discrete cosine / Walsh) biorthogonal transforms are introduced after the explanation for design of all phase sequency filters. Another new BT presented in this paper which is called linear decaying discrete cosine biorthogonal transform, and three transforms above can be used as substitutes for discrete cosine transform (DCT) to implement the well-known JPEG scheme. The details of JPEG scheme based on BT (BT-JPEG) are selectively discussed. The coding results of BT-JPEG are compared with the JPEG scheme based on DCT (DCT-JPEG), which indicate that blocking artifacts in BT-JPEG are reduced at low bit rates.A deblocking algorithm using noise injection followed by image denoising (NIFID) is coupled with BT-JPEG to eliminate blocking artifacts at low bit rates. Results show that NIFID algorithm provides both objective and subjective improvements to the blocky image.Since progressive image coding has easy-controlled bit rates and high coding efficiency, two progressive image coding algorithms based on BT, named BT-EZW and BT-SPHIT, are designed, according to the principles of embedded zerotree wavelet (EZW) coding and set partitioning in hierarchical trees (SPIHT) algorithm, respectively. Both BT-EZW and BT-SPIHT produce compression results that significantly outperform DCT-JPEG at low bit rates.

Related Dissertations

  1. Research on Transparent Security of JPEG Image,TP391.41
  2. Research on Restoration of Images Collected by Reconnaissance System in Near-Space,TP391.41
  3. Research on Novel Steganography Algorithm with High Capacity,TN918
  4. The Design of Vehicle Monitoring Terminal Based on Mobile Communication Network,TN929.5
  5. Design of Embedded Image Acquisition and Transmission System Based on Wireless LAN,TP368.1
  6. Design and implementation of interactive multimedia e - Leaning system based on wireless mobile technology,TP391.6
  7. Research on Compressing High Resolution Images Produced by Aerial Digital Cameras,TP391.41
  8. A Study on the Application of Artificial Intelligence in Direct Torque Control,TN919.81
  9. Blind Forensic of Color Forgeries Based on the JPEG Compression Characteristic,TP391.41
  10. Based the FPGA image acquisition and JPEG compression system implementation,TP391.41
  11. Research on Semi-fragile Watermarking Technique for Digital Image,TP309.7
  12. Blind Digital Image Forensics Technology Studies,TP391.41
  13. Research on Shape-Adaptive Transform and Its Application in Region of Interest Coding,TP391.41
  14. Reliable Detection Technology for Typical Steganographic Algorithm of JPEG Images,TP391.41
  15. The Research of Digital Steganography Based on Jpeg Picture,TP309
  16. Research and Realization of Face Feature Extraction and Recognition Algorithms,TP391.41
  17. Design and implementation of a graphics compression coding method,TN919.81
  18. Study of Image Compression Coding Based on Warped Discrete Cosine Transform,TN919.81
  19. Data Acquisition and Pretreament Interface Design of JPEG Video Decoding Chip Based on FPGA,TN919.81
  20. The Research of Steganography Based on Domain of DCT,TP393.08
  21. Design of Image Authentication Algorithm Based on Digital Watermarking,TP391.41

CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device
© 2012 www.DissertationTopic.Net  Mobile