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
Kaedah bukan rujukan berguna secara meluas untuk anggaran kualiti gambar pada bahagian penyahkod. Dalam kerja lain, kami membincangkan anggaran bukan rujukan tulen menggunakan hanya gambar yang dinyahkod, dan kami mencadangkan kaedah anggaran kuantitatif untuk bunyi nyamuk dan artifak blok. Dalam makalah ini, kita membincangkan kaedah anggaran kerana ia digunakan untuk kemerosotan domain temporal. Dalam kaedah yang dicadangkan, perbezaan antara gambar berimbuhan gerakan dan aktiviti vektor gerakan adalah parameter asas kemerosotan temporal. Untuk mendapatkan parameter ini, anggaran gerakan yang tepat tetapi tidak stabil digunakan dengan pengurangan 1/16 kuasa pemprosesan. Nilai parameter yang sama dalam gambar boleh dilihat dalam gambar asal yang stabil, tetapi kemerosotan temporal yang disebabkan oleh pengekodan meningkatkannya. Untuk gambar intrakod, nilai meningkat dengan ketara. Walau bagaimanapun, untuk gambar antara kod, nilai adalah sama atau berkurangan. Oleh itu, dengan mengambil nisbah bingkai puncak dan bingkai lain, nilai mutlak kemerosotan temporal boleh dianggarkan. Dalam kes ini, bingkai puncak mungkin dalam kod. Akhir sekali, kami menilai kaedah yang dicadangkan menggunakan gambar berkod dengan kuantisasi yang berbeza.
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Salinan
Kenji SUGIYAMA, Naoya SAGARA, Ryo OKAWA, "Non-reference Quality Estimation for Temporal Degradation of Coded Picture" in IEICE TRANSACTIONS on Fundamentals,
vol. E94-A, no. 2, pp. 519-524, February 2011, doi: 10.1587/transfun.E94.A.519.
Abstract: The non-reference method is widely useful for picture quality estimation on the decoder side. In other work, we discussed pure non-reference estimation using only the decoded picture, and we proposed quantitative estimation methods for mosquito noise and block artifacts. In this paper, we discuss the estimation method as it applies to the degradation of the temporal domain. In the proposed method, motion compensated inter-picture differences and motion vector activity are the basic parameters of temporal degradation. To obtain these parameters, accurate but unstable motion estimation is used with a 1/16 reduction of processing power. Similar values of the parameters in the pictures can be seen in the stable original picture, but temporal degradation caused by the coding increases them. For intra-coded pictures, the values increase significantly. However, for inter-coded pictures, the values are the same or decrease. Therefore, by taking the ratio of the peak frame and other frames, the absolute value of the temporal degradation can be estimated. In this case, the peak frame may be intra-coded. Finally, we evaluate the proposed method using coded pictures with different quantization.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.E94.A.519/_p
Salinan
@ARTICLE{e94-a_2_519,
author={Kenji SUGIYAMA, Naoya SAGARA, Ryo OKAWA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Non-reference Quality Estimation for Temporal Degradation of Coded Picture},
year={2011},
volume={E94-A},
number={2},
pages={519-524},
abstract={The non-reference method is widely useful for picture quality estimation on the decoder side. In other work, we discussed pure non-reference estimation using only the decoded picture, and we proposed quantitative estimation methods for mosquito noise and block artifacts. In this paper, we discuss the estimation method as it applies to the degradation of the temporal domain. In the proposed method, motion compensated inter-picture differences and motion vector activity are the basic parameters of temporal degradation. To obtain these parameters, accurate but unstable motion estimation is used with a 1/16 reduction of processing power. Similar values of the parameters in the pictures can be seen in the stable original picture, but temporal degradation caused by the coding increases them. For intra-coded pictures, the values increase significantly. However, for inter-coded pictures, the values are the same or decrease. Therefore, by taking the ratio of the peak frame and other frames, the absolute value of the temporal degradation can be estimated. In this case, the peak frame may be intra-coded. Finally, we evaluate the proposed method using coded pictures with different quantization.},
keywords={},
doi={10.1587/transfun.E94.A.519},
ISSN={1745-1337},
month={February},}
Salinan
TY - JOUR
TI - Non-reference Quality Estimation for Temporal Degradation of Coded Picture
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 519
EP - 524
AU - Kenji SUGIYAMA
AU - Naoya SAGARA
AU - Ryo OKAWA
PY - 2011
DO - 10.1587/transfun.E94.A.519
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E94-A
IS - 2
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - February 2011
AB - The non-reference method is widely useful for picture quality estimation on the decoder side. In other work, we discussed pure non-reference estimation using only the decoded picture, and we proposed quantitative estimation methods for mosquito noise and block artifacts. In this paper, we discuss the estimation method as it applies to the degradation of the temporal domain. In the proposed method, motion compensated inter-picture differences and motion vector activity are the basic parameters of temporal degradation. To obtain these parameters, accurate but unstable motion estimation is used with a 1/16 reduction of processing power. Similar values of the parameters in the pictures can be seen in the stable original picture, but temporal degradation caused by the coding increases them. For intra-coded pictures, the values increase significantly. However, for inter-coded pictures, the values are the same or decrease. Therefore, by taking the ratio of the peak frame and other frames, the absolute value of the temporal degradation can be estimated. In this case, the peak frame may be intra-coded. Finally, we evaluate the proposed method using coded pictures with different quantization.
ER -