Cornsweet surfaces for selective contrast enhancement
نویسندگان
چکیده
منابع مشابه
Cornsweet surfaces for selective contrast enhancement
The contrast of photographs or rendered images is commonly enhanced to increase the image’s visual appeal. Normal computer science approaches take no account of image content. In artwork, spatial configurations are use to increase apparent contrast. We have a spatially aware contrast enhancement algorithm, which uses image structure to hide the countershading profiles. We can achieve enhancemen...
متن کاملContrast Enhancement of Mammograms for Rapid Detection of Microcalcification Clusters
Introduction Breast cancer is one of the most common types of cancer among women. Early detection of breast cancer is the key to reducing the associated mortality rate. The presence of microcalcifications clusters (MCCs) is one of the earliest signs of breast cancer. Due to poor imaging contrast of mammograms and noise contamination, radiologists may overlook some diagnostic signs, specially t...
متن کاملImage Contrast Enhancement by Analysis on Embedded Surfaces of Images
Image contrast enhancement plays an important role in many machine vision applications. In this study, we propose a new method for edge enhancement based on analysis on embedded surfaces of images. The proposed method gives an insight into the relationship between the image intensities (also the gradients) and image contrast. In our method, scaled surface area and the surface volume are used to...
متن کاملNew UWB Shielding with Frequency Selective Surfaces
In this paper a Frequency Selective Surface (FSS) as a UWB electromagnetic shield is introduced. The proposed FSS comprises a quasi-J.C-Jerusalem Cross- and a copper ring, which are located at both sides of a FR4 substrate and can represent a S.E -Shielding Effectiveness- better than 20dB in 90% bandwidth of Ultra Wide Band frequency. This structure is compact and thin. Each cell comprises J.C ...
متن کاملAcceleration of histogram-based contrast enhancement via selective downsampling
In this paper, we propose a general framework to accelerate the universal histogram-based image contrast enhancement (CE) algorithms. Both spatial and gray-level selective downsampling of digital images are adopted to decrease computational cost, while the visual quality of enhanced images is still preserved and without apparent degradation. Mapping function calibration is novelly proposed to r...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Computers & Graphics
سال: 2014
ISSN: 0097-8493
DOI: 10.1016/j.cag.2014.04.001