کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6883523 1444174 2018 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Contrast enhancement of brightness-distorted images by improved adaptive gamma correction
ترجمه فارسی عنوان
افزایش کنتراست تصاویر با وضوح تصویری با اصلاح گاما سازگار بهبود یافته
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
چکیده انگلیسی
As an efficient image contrast enhancement (CE) tool, adaptive gamma correction (AGC) was previously proposed by relating gamma parameter with cumulative distribution function (CDF) of the pixel gray levels within an image. ACG deals well with most dimmed images, but fails for globally bright images and the dimmed images with local bright regions. However, such two categories of brightness-distorted images are universal in real scenarios, such as those incurred by improper exposure and white objects. In order to attenuate such deficiencies, in this paper we propose an improved AGC technique. The novel strategy of negative images is used to realize CE of the bright images, and the gamma correction modulated by truncated CDF is employed to enhance the dimmed ones. As such, local over-enhancement and structure distortion can be alleviated effectively. Extensive qualitative and quantitative experimental results show that our proposed method yields consistently good CE results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers & Electrical Engineering - Volume 66, February 2018, Pages 569-582
نویسندگان
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