Abstract
An orthogonal transform is an essential technique for reducing the spatial redundancy of image signals. In the orthogonal transforms. Discrete cosine Transform (DCT) has been most successfully applied to image codings, since it provides a high compression ratio. However, DCT coding produces discontinuous noise at block boundaries called 'blocking effect' which degrades lowbit-rate coded images. To reduce the blocking effect, lapped orthogonal transform (LOT) has been proposed. This paper proposes an intrafield-interframe-adaptive LOT and an LOT domain decimation to apply LOT to a scalable compatible video coding.
| Original language | English |
|---|---|
| Pages (from-to) | 71-78 |
| Number of pages | 8 |
| Journal | NTT R and D |
| Volume | 42 |
| Issue number | 1 |
| Publication status | Published - 1993 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Electrical and Electronic Engineering
Cite this
Video coding using lapped orthogonal transform. / Jozawwa, Hirohisa; Watanabe, Hiroshi.
In: NTT R and D, Vol. 42, No. 1, 1993, p. 71-78.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Video coding using lapped orthogonal transform
AU - Jozawwa, Hirohisa
AU - Watanabe, Hiroshi
PY - 1993
Y1 - 1993
N2 - An orthogonal transform is an essential technique for reducing the spatial redundancy of image signals. In the orthogonal transforms. Discrete cosine Transform (DCT) has been most successfully applied to image codings, since it provides a high compression ratio. However, DCT coding produces discontinuous noise at block boundaries called 'blocking effect' which degrades lowbit-rate coded images. To reduce the blocking effect, lapped orthogonal transform (LOT) has been proposed. This paper proposes an intrafield-interframe-adaptive LOT and an LOT domain decimation to apply LOT to a scalable compatible video coding.
AB - An orthogonal transform is an essential technique for reducing the spatial redundancy of image signals. In the orthogonal transforms. Discrete cosine Transform (DCT) has been most successfully applied to image codings, since it provides a high compression ratio. However, DCT coding produces discontinuous noise at block boundaries called 'blocking effect' which degrades lowbit-rate coded images. To reduce the blocking effect, lapped orthogonal transform (LOT) has been proposed. This paper proposes an intrafield-interframe-adaptive LOT and an LOT domain decimation to apply LOT to a scalable compatible video coding.
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UR - http://www.scopus.com/inward/citedby.url?scp=0027794356&partnerID=8YFLogxK
M3 - Article
VL - 42
SP - 71
EP - 78
JO - NTT R and D
JF - NTT R and D
SN - 0915-2326
IS - 1
ER -