Genetic Algorithm - High Dynamic Range Image Enhancement
نویسندگان
چکیده
In this Modern era, image Transmission and processing plays a major role. It would not be possible to retrieve information from satellite and medical images without the help of Image processing techniques. Image Enhancement is the art of examining images for identifying objects and judging their significance. The proposed work uses the concept of GA to find the image with best Signal to noise Ratio (SNR). The basic GA does not require extensive knowledge of the search space, such as likely solution bounds or functional derivatives. The present work presents a new method on rendering high dynamic range images on conventional displays. This algorithm is conceptually simple, computationally efficient, robust and easy to use. The gradient field of the image is obtained by attenuating the magnitudes of large gradients. A new, high dynamic range images is then obtained by solving a Poisson equation on the modified gradient field. High dynamic range (HDR) radiance maps are becoming increasingly common and important in computer graphics.
منابع مشابه
A General Framework for 1-D Histogram-baesd Image Contrast Enhancement
In this paper, a general framework for image contrast enhancement algorithm based on an optimization problem is presented. Through this optimization, the intensities can be better distributed. The algorithm is based on the facts that the histogram of the enhanced image is close to the input image histogram and uniform distribution, simultaneously. Based on this fact, we obtain a closed form opt...
متن کاملAutomatic Photograph Enhancement
We propose a method of image enhancement, based on a spatial domain technique called histogram equalization. Traditional histogram equalization is only useful for images with backgrounds and foregrounds that are both bright or both dark, whereas our method works for images with high dynamic range. The technique is to segment the image into large regions with high contrast separations which are ...
متن کاملHigh Dynamic Range Color Image Enhancement Using Fuzzy Logic and Bacterial Foraging
High dynamic range images contain both the underexposed and the overexposed regions. The enhancement of the underexposed and the overexposed regions is the main concern of this paper. Two new transformation functions are proposed to modify the fuzzy membership values of under and the overexposed regions of an image respectively. For the overexposed regions, a rectangular hyperbolic function is ...
متن کاملFast and robust wavelet-based dynamic range compression with local contrast enhancement
In this paper, a new wavelet-based dynamic range compression algorithm is proposed to improve the visual quality of digital images captured in the high dynamic range scenes with non-uniform lighting conditions. Wavelet transform is used especially for dimension reduction such that a dynamic range compression with local contrast enhancement algorithm is applied only to the approximation coeffici...
متن کاملDynamic range compression and contrast enhancement for digital images in the compressed domain
Yeong-Hwa Kim Chung-Ang University Heukseok-Dong Dongjak-Gu, Seoul, Korea Abstract. We develop a simple and efficient algorithm for dynamic range compression and contrast enhancement of digital images in the compressed domain. The basic idea of our approach is to separate illumination and reflectance components of an image in the compressed domain. We adjust the amount of contribution of the il...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2006