Understanding and comparing images for the purposes of data analysis is currently a very computationally demanding task. A group at Australian National University (ANU) recently developed open-source code that can detect fundamental topological features of a grayscale image in a computationally feasible manner. This is made possible by the fact that computers store grayscale images as cubical c...

Objective: To prospectively assess the diagnostic performance of Doppler ultrasound and grayscale imaging for the discrimination of benign and malignant adnexal masses. Study design: Observational study. Duration: January 2002 to December 2003. Setting: Mother and Child Health (MCH) Center, Unit II, Pakistan Institute of Medical Sciences, Islamabad, Pakistan. Subjects: Patients with an adnexal ...

Statistical-mechanical modeling of digital halftoning is proposed. The digital halftoning dealt with here is achieved by making use of the threshold mask, and for each pixel, the halftoned pixel is determined as black (set to one) if the original grayscale pixel is greater than or equal to the mask value and is determined as white (set to zero) vice versa. Basically, our method is a kind of the...

Recent developments in engineering and computer sciences have heightened the need for digital image enhancement. Most of previously reported works, however, focused on enhancement using classical methods like mathematical transformations spatial frequency-domain methods. Hence, recently, there has been an increasing interest nature-inspired optimization techniques processing purposes. The water...

Adaptive binarization methodologies threshold the intensity of pixels with respect to adjacent exploiting integral images. In turn, images are generally computed optimally using summed-area-table algorithm (SAT). This document presents a new adaptive technique based on fuzzy through an efficient design modified SAT for integrals. We define this methodology as FLAT (Fuzzy Local Thresholding). Th...

a watermarking scheme for grayscale image isproposed based on a family of the chaotic maps and discretecosine transform. jacobian elliptic mapis employed to encrypt ofwatermarked logo. piecewise nonlinear chaotic map is also usedto determine the location of dct coefficients for the watermarkembedding. the purpose of this algorithm is to improve theshortcoming of watermarking such as small key s...