دوره 20، شماره 3 - ( 10-1402 )
جلد 20 شماره 3 صفحات 196-183 |
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Parsaee S, Khanjani H, Khademi Doroh M, Ebrahimi Moghadam A, Hadizadeh H. Fast CU Size and Intra Mode Decision Algorithm in HEVC Standard. JSDP 2023; 20 (3) : 11
URL: http://jsdp.rcisp.ac.ir/article-1-1017-fa.html
URL: http://jsdp.rcisp.ac.ir/article-1-1017-fa.html
پارسایی سمانه، خانجانی حسین، خادمی درح مرتضی، ابراهیمی مقدم عباس، هادیزاده هادی. روش سریع تعیین حالت پیشگویی درون قابی و اندازه واحد کدگذاری در HEVC. پردازش علائم و داده‌ها. 1402; 20 (3) :183-196
دانشگاه فردوسی مشهد
چکیده: (577 مشاهده)
هدف این پژوهش، ارایهی روشی برای کاهش تعداد حالتهای پیشگویی درون قابی کدگذار HEVC است، چرا که بررسی همه حالتها در این فرآیند بسیار زمانبر است. در این پژوهش روش جدیدی مبتنی بر عملگر گرادیانگیر سوبل جهت تعیین سریع حالت پیشگویی درونقابی و همچنین اندازه واحد کدگذاری در HEVC پیشنهاد شده است. زمان کدگذاری نسبت به نرمافزار مرجعHEVC (HM)با استفاده از روش پیشنهادی سریع، بهطور متوسط ۵۶٪ و با استفاده از روش پیشنهادی دقیق، بهطور متوسط ۲۹% کاهش یافته و در هر دو روش افت کیفیت ویدیوی نهایی قابل چشمپوشی است.
شماره‌ی مقاله: 11
واژه‌های کلیدی: کدگذاری ویدیو، کدگذاری پربازده ویدیو (HEVC)، بهینه‌سازی نرخ – اعوجاج (RDO)، پیشگویی درونقابی، سوبل
نوع مطالعه: پژوهشي |
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مقالات پردازش تصویر
دریافت: 1398/2/28 | پذیرش: 1402/4/27 | انتشار: 1402/10/24 | انتشار الکترونیک: 1402/10/24
دریافت: 1398/2/28 | پذیرش: 1402/4/27 | انتشار: 1402/10/24 | انتشار الکترونیک: 1402/10/24
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