Denny Melkay M George

• M Tech, MSc
• Professor (Assistant) at Sri Sathya Sai Institute of Higher Learning

In middle ear ailments, the thickness of tympanic membrane (TM) could change due to biofilm depositions. It is useful to measure the vibrations of the TM as well as its thickness and curvature. In the presence of unavoidable human motion, this becomes challenging and requires the use of expensive devices. We demonstrate a low-cost method for measur...

In this paper, we introduce a novel time-averaged sampling method that can be used in a low-cost, camera-based, line-field, spectral domain optical coherence tomography (SD-OCT) device. We demonstrate that when used with an automated subtraction and magnitude based averaging scheme that is analogous to lock-in detection, this method can enhance the...

Conventional Newtons rings is generally used in undergraduate laboratory to determine the average wavelength of Na doublet. A minor modification of this setup enables us to view simultaneously Newtons rings both in reflected as well as transmitted light. A movable glass plate with respect to the plano-convex lens allows us to observe the variation...

The adaptive enhancement method depends on the characteristics of the input image and decide, for example, whether to increase the dynamic range of the image or to enhance specific low contrast regions of the image without affecting mid and high contrast regions. In this paper, two adaptive enhancement methods are studied and implemented. The resea...