This paper presents a new efficient and fast approach to texture characterization for high-speed web inspection applications (mainly focused on textured material grading and fault detection). The texture description proposed makes use of semicover concept over binary planes derived from grey images. A measure of the local semicover tendency based on joint occurrences of elementary semicover patterns is described, and a simplification method of computation is presented to reduce the cost. Feasibility and reliability of the method is evaluated by means of a comparative study including other algorithms widely used in inspection applications. The results show a similar or superior performance to other approaches but with a reduced computational cost.

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Abstract. Tool path generation is one of the most complex problems in Computer AidedManufacturing. Although some efficient strategies have been developed to solve it, most of them are only useful for 3 and 5 axis standard machining. The algorithm called Virtual Digitising computes the tool path by means of a "virtually digitised" model of the surface and a geometry specification of the tool and its motion, so can be used even in non-standard machining (retrofitting). This algorithm is simple, robust and avoids the problem of toolsurface collision by its own definition. However, its computing cost is high. Presented in the paper there is a Virtual Digitising optimisation that takes the advantages of reconfigurable computing (using Field Programmable Gates Arrays) in order to improve the algorithm speed. A comparative study will show the gain and precision achieved.

Abstract-In this paper we present a novel Simulink blockset which is conceived especially for image processing hybrid systems. The blockset is composed of several libraries with different abstraction levels (high-level, hardware and software) allowing the co-design and simulation of an entire hardware/software system. This background setting is complemented by a set of tools that automates the transition through the different descriptions of the system and helps to make the critical decisions in the partition phase. In addition, a co-design flow is proposed to take advantage of the blockset features. All these items shape a "co-design environment" that allows an easy and quick exploration of the design space to obtain optimised solutions which satisfy the system restrictions.

Abstract-Tool path generation is one of the most complex problems in Computer Aided Manufacturing. Although some efficient strategies have been developed, most of them are only useful for standard machining. The algorithm called Virtual Digitizing avoids this problem by its own definition but its computing cost is high and makes it difficult for being integrated in standard machining in order to adopt the new ISO standard 14649. Presented in the paper there is a Virtual Digitizing hardware/software architecture that takes advantage of Field Programmable Gate Arrays (FPGAs) to improve the algorithm efficiency and to meet the actual restrictions of the traditional Computer Numeric Control systems at the same time. In order to evaluate the architecture, a prototype was implemented using a commercial reconfigurable platform integrated within a CNC lathe for shoe last machining. The performance of the system for tool path generation was measured for different trajectory and surface precisions using a database of real shoe models. The experiments show a significant speedup for all the cases and maintaining the error of the results below the maximum allowed.