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Low Complexity Quantization in High Efficiency Video Coding

تقدير كمي منخفض التعقيد في ترميز الفيديو عالي الكفاءة
Authors: Meng Wang; Xiaohan Fang; Songchao Tan; Xinfeng Zhang; Li Zhang;

Low Complexity Quantization in High Efficiency Video Coding

Abstract

La quantification optimisée débit-distorsion (RDOQ) offre un excellent compromis entre débit et distorsion dans le codage vidéo à haut rendement (HEVC), conduisant à une amélioration inspirante en termes de performance débit-distorsion. Cependant, son utilisation intensive impose une grande complexité à l'encodeur dans les applications de compression vidéo du monde réel. Dans cet article, nous fournissons un examen complet des techniques de quantification de faible complexité dans le HEVC, y compris la détection rapide RDOQ et la détection de blocs entièrement nuls. En particulier, la RDOQ rapide repose sur des modèles de taux et de distorsion pour l'estimation des coûts de distorsion de taux, de sorte que le coefficient quantifié le plus approprié est sélectionné de manière peu complexe. La détection de bloc tout zéro déduit le bloc tout zéro en sautant la transformation et la quantification, dans le but de réduire davantage la complexité. La relation entre les deux techniques est également discutée, et de plus, nous envisageons également la conception future de la quantification à faible complexité dans la prochaine norme de codage vidéo polyvalent (VVC).

La cuantificación optimizada de tasa-distorsión (RDOQ) proporciona una excelente compensación entre la tasa y la distorsión en la codificación de vídeo de alta eficiencia (HEVC), lo que lleva a una mejora inspiradora en términos de rendimiento de tasa-distorsión. Sin embargo, su uso intensivo impone una alta complejidad al codificador en aplicaciones de compresión de vídeo del mundo real. En este documento, proporcionamos una revisión exhaustiva de las técnicas de cuantificación de baja complejidad en HEVC, incluida la RDOQ rápida y la detección de bloque cero. En particular, el RDOQ rápido se basa en modelos de tasa y distorsión para la estimación de costos de tasa-distorsión, de modo que el coeficiente cuantificado más apropiado se selecciona de una manera de baja complejidad. La detección de bloque todo cero infiere el bloque todo cero omitiendo la transformación y la cuantificación, en un esfuerzo por reducir aún más la complejidad. También se discute la relación entre las dos técnicas y, además, también prevemos el diseño futuro de la cuantificación de baja complejidad en el próximo estándar Versatile Video Coding (VVC).

The rate-distortion optimized quantization (RDOQ) provides an excellent trade-off between rate and distortion in High Efficiency Video Coding (HEVC), leading to inspiring improvement in terms of rate-distortion performance. However, its heavy use imposes high complexity on the encoder in real-world video compression applications. In this paper, we provide a comprehensive review on low complexity quantization techniques in HEVC, including both fast RDOQ and all-zero block detection. In particular, the fast RDOQ relies on rate and distortion models for rate-distortion cost estimation, such that the most appropriate quantized coefficient is selected in a low complexity way. All-zero block detection infers the all-zero block by skipping transform and quantization, in an effort to further reduce the complexity. The relationship between the two techniques is also discussed, and moreover, we also envision the future design of low complexity quantization in the upcoming Versatile Video Coding (VVC) standard.

يوفر التكميم الأمثل لتشويه المعدل (RDOQ) مفاضلة ممتازة بين المعدل والتشويه في ترميز الفيديو عالي الكفاءة (HEVC)، مما يؤدي إلى تحسين ملهم من حيث أداء تشويه المعدل. ومع ذلك، فإن استخدامه المكثف يفرض تعقيدًا كبيرًا على المشفر في تطبيقات ضغط الفيديو في العالم الحقيقي. في هذه الورقة، نقدم مراجعة شاملة لتقنيات التكميم منخفضة التعقيد في HEVC، بما في ذلك كل من RDOQ السريع والكشف عن الكتل الصفرية. على وجه الخصوص، يعتمد RDOQ السريع على نماذج المعدل والتشويه لتقدير تكلفة تشويه المعدل، بحيث يتم اختيار أنسب معامل كمي بطريقة منخفضة التعقيد. يستنتج اكتشاف الكتلة الصفرية بالكامل الكتلة الصفرية بالكامل عن طريق تخطي التحويل والتكميم، في محاولة لتقليل التعقيد بشكل أكبر. كما تمت مناقشة العلاقة بين التقنيتين، وعلاوة على ذلك، فإننا نتصور أيضًا التصميم المستقبلي للتكميم منخفض التعقيد في معيار ترميز الفيديو متعدد الاستخدامات (VVC) القادم.

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Keywords

Stereo Vision and Depth Estimation, Advancements in Video Coding Standards and Techniques, low complexity video coding, Theoretical computer science, Quantization (signal processing), High efficiency video coding, Computer engineering, FOS: Mathematics, Image Compression Techniques and Standards, Scalable Video Coding, Rate-Distortion Analysis, Rate–distortion theory, Coding (social sciences), rate-distortion optimized quantization, Statistics, High Efficiency Video Coding (HEVC), Rate–distortion optimization, Bit rate, Computer science, TK1-9971, Encoder, Vector Quantization, Computational complexity theory, Algorithm, Video processing, Operating system, Data compression, Video tracking, Signal Processing, Computer Science, Physical Sciences, Computer vision, Electrical engineering. Electronics. Nuclear engineering, Computer Vision and Pattern Recognition, Rate distortion, Multiview Video Coding, Mathematics, Video Coding

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
5
Top 10%
Average
Average
gold