کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
529782 869708 2014 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An efficient algorithm to eliminate temporal pumping artifact in video coding with hierarchical prediction structure
ترجمه فارسی عنوان
یک الگوریتم کارآمد برای از بین بردن مصنوعی پمپاژ زمانی در کدگذاری ویدئو با ساختار پیش بینی سلسله مراتبی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر چشم انداز کامپیوتر و تشخیص الگو
چکیده انگلیسی


• A metric for just noticeable temporal pumping artifact (TPA) is established.
• An efficient TPA eliminating algorithm in video coding is proposed.
• The proposed algorithm achieves a more smooth subjective video quality.
• The proposed algorithm improves the observe comfort of the human eye.

At low bit-rates, hierarchical prediction structure using quantization parameter cascading strategy will introduce a new temporal distortion, i.e., the temporal pumping artifact (TPA) presenting itself as a stumbling effect which seriously affect the subjective video reconstructive quality. This paper analyzes one important key factor which greatly influence the critical perceptual of the TPA and proposes a metric for just noticeable temporal pumping artifact (JNTPA) based on spatial–temporal masking effects in human visual system (HVS). Finally, an efficient TPA eliminating algorithm in video coding based on the JNTPA has been proposed. The subsequent experiments demonstrate that the estimated JNTPA values using the proposed metric are in line with the HVS perception and comparable with JVT-P104, the proposed TPA eliminating algorithm achieves a more smooth subjective video quality and improves the observe comfort of the human eye. At the same bit-rate, better subjective video quality can be observed using the eliminating algorithm.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Visual Communication and Image Representation - Volume 25, Issue 7, October 2014, Pages 1528–1542
نویسندگان
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