دوره 17، شماره 1 - ( 4-1399 )
جلد 17 شماره 1 صفحات 146-131 |
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چکیده: (2349 مشاهده)
در این مقاله، روشی نوین جهت بازسازی تصاویر بر اساس نمونه‌های به‌دست‌آمده از اعمال «حس‌گری فشرده بلوکی» ارائه می‌شود. جهت حصول به کیفیت بازسازی بالا در روش پیشنهادی، ابتدا یک تبدیل تطبیقی بلوکی توسعه داده می‌شود که از همبستگی و شباهت بلوک‌های همسایه یک بلوک موردنظر در تصویر برای حصول به تُنُک‌سازی بالاتر آن بلوک، استفاده می‌کند؛ سپس، برای کاهش نوفه و اعوجاجات احتمالی به‌وجود‌آمده در فرآیند بازسازی و در عین‌حال حفظ میزان تُنُکی ضرایب، از یک تابع آستانه‌گیری نرم استفاده می‌شود که قادر است به‌صورت تطبیقی، ضرایب تبدیل را برای افزایش کیفیت بازسازی تصویر، پالایش کند. نتایج تجربی به‌دست‌آمده نشان می‌دهند که روش پیشنهادی از دقت و کیفیت بازسازی بالاتری در مقایسه با چندین روش مطرح موجود برخوردار است.
نوع مطالعه: پژوهشي |
موضوع مقاله:
مقالات پردازش تصویر
دریافت: 1397/5/18 | پذیرش: 1398/5/1 | انتشار: 1399/4/1 | انتشار الکترونیک: 1399/4/1
دریافت: 1397/5/18 | پذیرش: 1398/5/1 | انتشار: 1399/4/1 | انتشار الکترونیک: 1399/4/1
فهرست منابع
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