کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
536852 870638 2016 18 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reduction of temporal distortion in video coding based on detection of just-noticeable temporal pumping artifact
ترجمه فارسی عنوان
کاهش اعوجاج زمانی در برنامه نویسی ویدئو بر اساس تشخیص فقط مصنوعی پمپاژ زمانی قابل توجه است
کلمات کلیدی
فقط قابل توجه مصنوعی پمپاژ موقت، سیستم بصری انسان، ساختار پیش بینی سلسله مراتبی، پارامتر کوانتساسیون، کدگذاری ویدئو
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر چشم انداز کامپیوتر و تشخیص الگو
چکیده انگلیسی


• A metric of just-noticeable temporal pumping artifact (JNTPA) is formulated.
• The proposed metric predicts JNTPA values in correspondence with human perception.
• An efficient algorithm based on the JNTPA has been devised for TPA reduction.
• The proposed algorithm achieves a more smooth subjective video quality.
• The proposed algorithm improves the viewing comfort for the human eye.

At low bit-rates, video coding under the hierarchical prediction structure induces a temporal distortion known as temporal pumping artifact (TPA) when the quantization parameter cascading strategy is used. TPA manifests itself as a pumping effect visually, due to severe quality fluctuations among adjacent pictures, which seriously affects the perceptual quality of a video. In this work, the causes and perception of the TPA is first analyzed. Then a metric of just-noticeable temporal pumping artifact (JNTPA) is formulated based on characteristics of the human visual system. Based on JNTPA, an efficient algorithm has been devised for TPA reduction (denoted as TRA-JNTPA for short). The experimental results have demonstrated that the proposed JNTPA measure is in line with human perception, and compared with JVT-P014, the proposed TRA-JNTPA achieves significant reduction of the TPA with superior subjective video quality at a given bit-rate.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Signal Processing: Image Communication - Volume 42, March 2016, Pages 1–18
نویسندگان
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