Directional Interpolation of Lost Block Using Difference of DC values and Similarity of AC Coefficients 


Vol. 30,  No. 6, pp. 465-474, Jun.  2005


PDF
  Abstract

In this paper, a directional reconstruction of lost block in image over noisy channel is presented. DCT coefficients or pixel values in the lost blocks are recovered by using the linear interpolation with available neighboring blocks that are adaptively selected by the directional measure that are composed of the DDC (Difference of DC opposite blocks)and SAC(Similarity of AC opposite blocks) between opposite blocks around lost blocks. The proposed directional recovery method is effective for the strong edge and texture regions because we do not make use of the fixed 4-neighboring blocks but exploit the varying neighboring blocks adaptively by the directional information in the local image. In this paper, we describe the novel directional measure(CDS: Combination of DDC and SAC) composed of the DDC and the SAC and select the usable block to recover the lost block with the directional measure. The proposed method shows about 0.6dB PSNR improvement in average compared to the conventional methods.

  Statistics
Cumulative Counts from November, 2022
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.


  Cite this article

[IEEE Style]

H. Y. Lee, I. K. Eom, Y. S. Kim, "Directional Interpolation of Lost Block Using Difference of DC values and Similarity of AC Coefficients," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 6, pp. 465-474, 2005. DOI: .

[ACM Style]

Hong Yub Lee, Il Kyu Eom, and Yoo Shin Kim. 2005. Directional Interpolation of Lost Block Using Difference of DC values and Similarity of AC Coefficients. The Journal of Korean Institute of Communications and Information Sciences, 30, 6, (2005), 465-474. DOI: .

[KICS Style]

Hong Yub Lee, Il Kyu Eom, Yoo Shin Kim, "Directional Interpolation of Lost Block Using Difference of DC values and Similarity of AC Coefficients," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 6, pp. 465-474, 6. 2005.

Search
(IN TITLE, AUTHOR, ABSTRACT,KEYWORDS)

Advanced Search ▼

POPULAR KEYWORDS
(TOP 10 KEYWORDS)

Recent Publications
(LAST 3 YEARS)






pISSN : 1226 - 4717
eISSN : 2287 - 3880