Retinex is a classical algorithm that simultaneously provides high dynamic range compression contrast and color constancy of an image. In this paper, we discuss a design of a digital signal processor (DSP) implementation of the single scale monochromatic Retinex algorithm.
The target processor is Texas Instruments TMS3. DM6. 42, a 3. 2- bit fix point DSP which is clocked at 6. MHz. This DSP hardware platform designed is of powerful consumption and video image processing capability. We give an overview of the DSP hardware and software, and discuss some feasible optimizations to achieve a real- time version of the Retinex algorithm. In the end, the performance of the algorithm executing on DSP platform is shown.
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Experimental implementation of Grover's search algorithm with neutral atom qubits. NASA Astrophysics Data System (ADS)Sun, Yuan; Lichtman, Martin; Baker, Kevin; Saffman, Mark.
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Grover's algorithm for searching an unsorted data base provides a provable speedup over the best possible classical search and is therefore a test bed for demonstrating the power of quantum computation. The algorithm has been demonstrated with NMR, trapped ion, photonic, and superconducting hardware, but only with two qubits encoding a four element database.
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We report on progress towards experimental demonstration of Grover's algorithm using two and three neutral atom qubits encoding a database with up to eight elements. Our approach uses a Rydberg blockade Ck NOT gate for efficient implementation of the Grover iterations. Quantum Monte Carlo simulations of the algorithm performance that account for gate errors and decoherence rates are compared with experimental results.
Work supported by the IARPA MQCO program. The Sys- Rem Detrending Algorithm: Implementation and Testing. NASA Astrophysics Data System (ADS)Mazeh, T.; Tamuz, O.; Zucker, S. Sys- Rem (Tamuz, Mazeh & Zucker 2. The algorithm works without any prior knowledge of the effects, as long as they appear in many stars of the sample.
This paper presents the basic principles of Sys- Rem and discusses a parameterization used to determine the number of effects removed. We assess the performance of Sys- Rem on simulated transits injected into WHAT survey data.
This test is proposed as a general scheme to assess the effectiveness of detrending algorithms. Application of Sys- Rem to the OGLE dataset demonstrates the power of the algorithm. We offer a coded implementation of Sys- Rem to the community. Implementing a Gaussian Process Learning Algorithm in Mixed Parallel Environment. Sci. Tech Connect. Chandola, Varun; Vatsavai, Raju. In this paper, we present a scalability analysis of a parallel Gaussian process training algorithm to simultaneously analyze a massive number of time series.
We study three different parallel implementations: using threads, MPI, and a hybrid implementation using threads and MPI. We compare the scalability for the multi- threaded implementation on three different hardware platforms: a Mac desktop with two quad- core Intel Xeon processors (1.
Linux cluster node with four quad- core 2. GHz AMD Opteron processors, and SGI Altix ICE 8. Intel Xeon processors (1. We also study the scalability of the MPI based and the hybrid MPI and thread based implementations on the SGI cluster with 1.
Experimental results show that the hybrid implementation scales better than the multi- threaded and MPI based implementations. The hybrid implementation, using 1. Smells Like Teen Spirit Lyrics Mp3 Download there. D video sequence reconstruction algorithmsimplemented on a DSPNASA Astrophysics Data System (ADS)Ponomaryov, V.
I.; Ramos- Diaz, E. A novel approach for 3. D image and video reconstruction is proposed and implemented. This is based on the wavelet atomic functions (WAF) that have demonstrated better approximation properties in different processing problems in comparison with classical wavelets. Disparity maps using WAF are formed, and then they are employed in order to present 3. D visualization using color anaglyphs.
Additionally, the compression via Pth law is performed to improve the disparity map quality. Other approaches such as optical flow and stereo matching algorithm are also implemented as the comparative approaches.
Numerous simulation results have justified the efficiency of the novel framework. The implementation of the proposed algorithm on the Texas Instruments DSP TMS3.
DM6. 42 permits to demonstrate possible real time processing mode during 3. D video reconstruction for images and video sequences.
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