The Remote Objects Control Interface, or ROCI, is a framework used within the University of Pennsylvania’s GRASP Laboratory to manipulate a network of distributed sensory nodes. The objective of this project is to build interfaces for querying and controlling these nodes, and thusly the network that they compose. In particular, the goal is to bridge the MATLAB environment to ROCI. The end resul...

Dynamic array-based languages such as MATLAB provide a wide range of built-in operations which can be efficiently applied to all elements of an array. Historically, MATLAB and Octave programmers have been advised to manually transform loops to equivalent “vectorized” computations in order to maximize performance. In this paper we present the techniques and tools to perform automatic vectorizati...

We describe the problems associated with the creation of high performance code for mathematical computations. We discuss the advantages and disadvantages of using a high level language like MATLAB and then propose partial evaluation as a way of lessening the disadvantages at little cost. We then go on to describe the design of a partial evaluator for MATLAB and present results showing what perf...

Toolboxes are the name given by the MathWorks to related sets of MATLAB functions aimed at solving a particular class of problems. Toolboxes of functions useful in signal processing, optimization, statistics, finance and a host of other areas are available from the MathWorks as add-ons to the standard MATLAB software distribution. I use the term Spatial Econometrics Toolbox to refer to my publi...

dde23 aims to make it as easy as possible to solve effectively delaydifferential equations (DDEs) with constant delays in Matlab. In this paper we discuss some of its features, including discontinuity tracking, iteration for short delays, and event location. We also develop some theoretical results that underlie the solver, including convergence, error estimation, and the effects of short delay...

Many different descriptions of retinex methods of lightness computation exist. This paper provides concise MATLAB implementations of two of the spatial techniques of making pixel comparisons. The code is presented along with test results on several images and a discussion of the results. The paper also discusses the calibration of input images and the post-retinex processing required to display...

MATLAB is a dynamic numerical scripting language widely used by scientists, engineers and students. While MATLAB’s high-level syntax and dynamic types make it ideal for prototyping, programmers often prefer using high-performance static languages such as FORTRAN for their final distributable code. Rather than rewriting the code by hand, our solution is to provide a tool that automatically trans...