کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
528124 869519 2014 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Multi-scale weighted gradient-based fusion for multi-focus images
ترجمه فارسی عنوان
فیوژن مبتنی بر شیب مقیاس چندگانه برای تصاویر چند فوکوس
کلمات کلیدی
همجوشی مبتنی بر گرادینت، تمرکز اندازه گیری، تصاویر چند فوکوس بی نظمی تار، ثبت نام نادرست
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر چشم انداز کامپیوتر و تشخیص الگو
چکیده انگلیسی

Anisotropic blur and mis-registration frequently happen in multi-focus images due to object or camera motion. These factors severely degrade the fusion quality of multi-focus images. In this paper, we present a novel multi-scale weighted gradient-based fusion method to solve this problem. This method is based on a multi-scale structure-based focus measure that reflects the sharpness of edge and corner structures at multiple scales. This focus measure is derived based on an image structure saliency and introduced to determine the gradient weights in the proposed gradient-based fusion method for multi-focus images with a novel multi-scale approach. In particular, we focus on a two-scale scheme, i.e., a large scale and a small scale, to effectively solve the fusion problems raised by anisotropic blur and mis-registration. The large-scale structure-based focus measure is used first to attenuate the impacts of anisotropic blur and mis-registration on the focused region detection, and then the gradient weights near the boundaries of the focused regions are carefully determined by applying the small-scale focus measure. Experimental results clearly demonstrate that the proposed method outperforms the conventional fusion methods in the presence of anisotropic blur and mis-registration.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Information Fusion - Volume 20, November 2014, Pages 60–72
نویسندگان
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