Optimal Control Problem and Power-Efficient Medical Image Processing Using Puma
Journal Title: International Journal of Modern Engineering Research (IJMER) - Year 2013, Vol 3, Issue 4
Abstract
As a starting point of this paper we present a problem from mammographic image processing. We show how it can be formulated as an optimal control problem for PDEs and illustrate that it leads to penalty terms which are nonstandard in the theory of optimal control of PDEs. To solve this control problem we use a generalization of the conditional gradient method which is especially suitable for non-convex problems. We apply this method to our control problem and illustrate that this method also covers the recently proposed method of surrogate functional from the theory of inverse problems. Graphics processing units (GPUs) are becoming an increasingly popularplatform to run applications that require a high computation throughput.They are limited, however, by memory bandwidth and power and, assuch, cannot always achieve their full potential. This paper presents thePUMA architecture - a domain-specific accelerator designed specificallyfor medical imaging applications, but with sufficient generality to makeit programmable. The goal is to closely match the performance achievedby GPUs in this domain but at a fraction of the power consumption. Theresults are quite promising - PUMA achieves upto 2X the performance of a modern GPU architecture and has up to a 54X improved efficiency on a floating-point and memory-intensive MRI reconstruction algorithm.
Authors and Affiliations
Himadri Nath Moulick
Keywords
Related Articles
- EP ID EP109664
- DOI -
- Views 117
- Downloads 0
A Survey on Authentication for Grayscale Images Based On Visual Cryptographic Technique
Abstract: A new digital watermarking technique as authentication method based on secret sharing sharing method for color images was proposed. The image is transformed in to binarized block form in which the wa...
Study on the Effect of Stress Concentration on Cutout Orientation of Plates with Various Cutouts and Bluntness
Abstract: Plates with variously shaped cut-out are often used in engineering structures. The understanding of the effect of cut-out on the load bearing capacity and stress concentration of panels is very important...
Strehl Ratio with Higher-Order Parabolic Filter
In all the branches of science, engineering and technology, it is known that the output due to an input impulse function, spatial or temporal, is never an impulse. There is a spread of the input impulse function in the o...
AC-DC-AC-DC Converter Using Silicon Carbide Schottky Diode
Silicon carbide (SiC) is the perfect cross between silicon and diamond. The crystal lattice of SiC is identical to silicon and diamond, but, exactly half the lattice sites are occupied by silicon atoms and half by...
An Efficient top- k Query Processing in Distributed Wireless Sensor Networks
Wireless Sensor Networks (WSNs) are usually defined as large-scale, ad-hoc, multi-hop and wireless unpartitioned networks of homogeneous, small, static nodes deployed in an area of interest. Applications of sensor networ...