Image enhancement technique plays vital role in improving the quality of the image. Enhancement technique basically enhances the foreground information and retains the background and improve the overall contrast of an image. In some case the background of an image hides the structural information of an image. This paper proposes an algorithm which enhances the foreground image and the backgroun...

The luminescence process for proto-objects moving with a peculiar velocity at high redshift is considered. It is shown that some primordial molecules could produce low-frequency photons (which correspond to the rotational lines) by decaying high-frequency rovibration photons from the CBR. Due to the rather different numbers of these photons, a huge enhancement (relative to the pure reflection m...

OBJECTIVES To investigate whether background parenchymal enhancement (BPE) and breast cancer would correlate searching for any significant difference of BPE pattern distribution in case of benign or malignant lesions. METHODS 386 patients, including 180 pre-menopausal (group 1) and 206 post-menopausal (group 2), underwent MR examination. Two radiologists evaluated MR images classifying normal...

In mobile phones, perceived quality of speech signal deteriorates significantly in the presence of background noise since near-end/surrounding noise also arrives at the near-end listener’s ears. The quality of the received signal varies widely depending upon signal strength and unavoidable background noise in the user environment. There is a need to improve the quality of received speech signal...

Using fuzzy set theory, we present a fuzzy rule-based algorithm to perform contrast enhancement for digital mammography breast masses. Compared to the well-known histogram equalization enhancement technique, fuzzy rule-based enhancement is able to represent knowledge in a comprehensible way. Four measures of quantifying enhancement in digital mammograms have been introduced. Each measure is bas...

BACKGROUND AND PURPOSE Most intramedullary astrocytomas have been known to exhibit at least some enhancement on MR imaging regardless of cell type or tumor grade. The purpose of this study was to evaluate the incidence of nonenhancing intramedullary astrocytomas through a retrospective study within our institutions and a systematic review of the medical literature. MATERIALS AND METHODS A tot...

background: in neutron interaction with matter and reduction of neutron energy due to multiple scatterings to the thermal energy range, increasing the probability of thermal neutron capture by neutron captures makes dose enhancement in the tumors loaded with these materials.   objective: the purpose of this study is to evaluate dose distribution in the presence of  10 b ,  157 gd  and  33 s  ne...

background iodinated x-ray contrast media are the most commonly used contrast agents in the world with an annual application of 40-50 million. new non-ionic con- trast agents are subdivided into low osmolar agents such as iopromide and iso-osmolar agents such as iodixanol. regarding different biochemical characteristics, these agents are different in the allergic reactions and contrast enhancem...