The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Kertas kerja ini membentangkan transformasi kosinus diskret integer (IntDCT) dengan hanya nilai diadik seperti k/2n (k, n∈ dalam N). Walaupun beberapa IntDCT konvensional telah dicadangkan, ia tidak sesuai untuk pengekodan imej lossless-to-lossy dalam bit-bit-perkataan-panjang (pekali) disebabkan kemerosotan prestasi penguraian frekuensi dalam sistem. Pertama, yang dicadangkan M-channel lossless Walsh-Hadamard transform (LWHT) boleh dibina dengan hanya (log2M)-bit-word-length dan mempunyai keteraturan struktur. Kemudian, IntDCT 8 saluran kami melalui LWHT mengekalkan prestasi pengekodan yang baik walaupun panjang perkataan bit rendah digunakan kerana LWHT, yang merupakan bahagian utama IntDCT, boleh dilaksanakan hanya dengan panjang perkataan 3 bit. Akhir sekali, kesahihan kaedah kami dibuktikan dengan menunjukkan hasil pengekodan imej lossless-to-lossy dalam panjang bit-perkataan rendah.
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Salinan
Taizo SUZUKI, Masaaki IKEHARA, "Integer Discrete Cosine Transform via Lossless Walsh-Hadamard Transform with Structural Regularity for Low-Bit-Word-Length" in IEICE TRANSACTIONS on Fundamentals,
vol. E93-A, no. 4, pp. 734-741, April 2010, doi: 10.1587/transfun.E93.A.734.
Abstract: This paper presents an integer discrete cosine transform (IntDCT) with only dyadic values such as k/2n (k, n∈ in N). Although some conventional IntDCTs have been proposed, they are not suitable for lossless-to-lossy image coding in low-bit-word-length (coefficients) due to the degradation of the frequency decomposition performance in the system. First, the proposed M-channel lossless Walsh-Hadamard transform (LWHT) can be constructed by only (log2M)-bit-word-length and has structural regularity. Then, our 8-channel IntDCT via LWHT keeps good coding performance even if low-bit-word-length is used because LWHT, which is main part of IntDCT, can be implemented by only 3-bit-word-length. Finally, the validity of our method is proved by showing the results of lossless-to-lossy image coding in low-bit-word-length.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.E93.A.734/_p
Salinan
@ARTICLE{e93-a_4_734,
author={Taizo SUZUKI, Masaaki IKEHARA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Integer Discrete Cosine Transform via Lossless Walsh-Hadamard Transform with Structural Regularity for Low-Bit-Word-Length},
year={2010},
volume={E93-A},
number={4},
pages={734-741},
abstract={This paper presents an integer discrete cosine transform (IntDCT) with only dyadic values such as k/2n (k, n∈ in N). Although some conventional IntDCTs have been proposed, they are not suitable for lossless-to-lossy image coding in low-bit-word-length (coefficients) due to the degradation of the frequency decomposition performance in the system. First, the proposed M-channel lossless Walsh-Hadamard transform (LWHT) can be constructed by only (log2M)-bit-word-length and has structural regularity. Then, our 8-channel IntDCT via LWHT keeps good coding performance even if low-bit-word-length is used because LWHT, which is main part of IntDCT, can be implemented by only 3-bit-word-length. Finally, the validity of our method is proved by showing the results of lossless-to-lossy image coding in low-bit-word-length.},
keywords={},
doi={10.1587/transfun.E93.A.734},
ISSN={1745-1337},
month={April},}
Salinan
TY - JOUR
TI - Integer Discrete Cosine Transform via Lossless Walsh-Hadamard Transform with Structural Regularity for Low-Bit-Word-Length
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 734
EP - 741
AU - Taizo SUZUKI
AU - Masaaki IKEHARA
PY - 2010
DO - 10.1587/transfun.E93.A.734
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E93-A
IS - 4
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - April 2010
AB - This paper presents an integer discrete cosine transform (IntDCT) with only dyadic values such as k/2n (k, n∈ in N). Although some conventional IntDCTs have been proposed, they are not suitable for lossless-to-lossy image coding in low-bit-word-length (coefficients) due to the degradation of the frequency decomposition performance in the system. First, the proposed M-channel lossless Walsh-Hadamard transform (LWHT) can be constructed by only (log2M)-bit-word-length and has structural regularity. Then, our 8-channel IntDCT via LWHT keeps good coding performance even if low-bit-word-length is used because LWHT, which is main part of IntDCT, can be implemented by only 3-bit-word-length. Finally, the validity of our method is proved by showing the results of lossless-to-lossy image coding in low-bit-word-length.
ER -