Academic Journal
Frequency-Based Adaptive Interpolation Filter in Intra Prediction
| العنوان: | Frequency-Based Adaptive Interpolation Filter in Intra Prediction |
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| المؤلفون: | Su-Yeon Lim, Min-Kyeong Choi, Yung-Lyul Lee |
| المصدر: | Applied Sciences, Vol 13, Iss 3, p 1475 (2023) |
| بيانات النشر: | MDPI AG, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Technology LCC:Engineering (General). Civil engineering (General) LCC:Biology (General) LCC:Physics LCC:Chemistry |
| مصطلحات موضوعية: | discrete cosine transform (DCT), interpolation filter, intra prediction, versatile video coding (VVC)/H.266, Technology, Engineering (General). Civil engineering (General), TA1-2040, Biology (General), QH301-705.5, Physics, QC1-999, Chemistry, QD1-999 |
| الوصف: | This paper proposes a method to improve the fractional interpolation of reference samples in the Versatile Video Coding (VVC) intra prediction. The proposed method uses additional interpolation filters which use more integer-positioned reference samples for prediction according to the frequency information of the reference samples. In VVC, a 4-tap Discrete Cosine Transform-based interpolation filter (DCT-IF) and 4-tap Smoothing interpolation filter (SIF) are alternatively performed on the block size and block directional prediction mode for reference sample interpolation. This paper uses four alternative interpolation filters such as 8-tap/4-tap DCT-IFs, and 4-tap/8-tap SIFs and an interpolation filter selection method using a high-frequency ratio calculated from one-dimensional (1D) transform of the reference samples are proposed. The proposed frequency-based Adaptive Filter allows to achieve the overall Bjøntegaard Delta (BD) rate gains of −0.16%, −0.13%, and −0.09% for Y, Cb, and Cr components, respectively, compared with VVC. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2076-3417 |
| Relation: | https://www.mdpi.com/2076-3417/13/3/1475; https://doaj.org/toc/2076-3417 |
| DOI: | 10.3390/app13031475 |
| URL الوصول: | https://doaj.org/article/4c5f20914c934b6b988bee242ecc8467 |
| رقم الانضمام: | edsdoj.4c5f20914c934b6b988bee242ecc8467 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 20763417 |
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| DOI: | 10.3390/app13031475 |