Kartheek Chandu

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Programmable Graphics Processing Unit (GPU) has emerged as a powerful parallel processing architecture for various applications requiring a large amount of CPU cycles. In this paper, we study the feasibility for using this architecture for image halftoning, in particular implementing computationally intensive neighborhood halftoning algorithms such as error(More)
Multi-bit screening is an extension of binary screening, in which every pixel in continuous-tone image can be rendered to one among multiple absorptance levels. Many multi-bit screen algorithms face the problem of contouring artifacts due to sudden changes in the majority absorptance level between gray levels. In this paper, we have extended the direct(More)
Analgesia and Sedation in pediatric intensive care unit Volakli E, Sdouga M Treating children in an intensive care unit aims at the reversal of physiologic derangement of their organism while caring for comfortable physical and psychological environment. Any correctable environmental and physical factors causing discomfort should be addressed before the(More)
We illustrate how employing Graphics Processing Units (GPU) can speed-up intensive image processing operations. In particular, we demonstrate the use of the NVIDIA CUDA architecture to implement a color digital binary halftoning algorithm based on Direct Binary Search (DBS). Halftoning a color image is more computationally expensive than the single color(More)
bstract. We describe a method for automatically classifying mage-quality defects on printed documents. The proposed aproach accepts a scanned image where the defect has been localzed a priori and performs several appropriate image processing teps to reveal the region of interest. A mask is then created from he exposed region to identify bright outliers.(More)
bstract. We describe a method for automatically detecting treaks in printed images using adaptive window-based image proections and mutual information. The proposed approach accepts a canned image enclosing the defect and computes the projections cross the entire image at different window sizes. The resulting races collected from the projections are(More)
In this paper, we propose a defect analysis system, which automatically aligns a digitized copy of a printed output to a reference electronic original and subsequently illustrates potential image quality artifacts. We focus on image defects or artifacts caused by shortfalls in mechanical or electrophotographic processes. In this method, log-polar transform(More)