Papers by Francisco Javier Rodriguez
Journal of Intelligent & Robotic Systems, 2003
Machine vision technology improves productivity and quality management and provides a competitive... more Machine vision technology improves productivity and quality management and provides a competitive advantage to industries that employ this technology. In this article, visual inspection and quality control theory are combined to develop a robust inspection system with manufacturing applications. The inspection process might be def ned as the one used to determine if a given product fulfill a priori specifi ations, which are the quality standard. In the case of visual inspection, these specif cations include the absence of defects, such as lack (or excess) of material, homogeneous visual aspect, required color, predetermined texture, etc. The characterization of the visual aspect of metallic surfaces is studied using quality control chars, which are a graphical technique used to compare on-line capabilities of a product with respect to these specif cations. Original algorithms are proposed for implementation in automated visual inspection applications with on-line execution requirements. The proposed artif cial vision method is a hybrid between the two usual methods of pattern comparison and theoretical decision. It incorporates quality control theory to statistically model the pattern for defect-free products. Specif cally, individual control charts with 6-sigma limits are set so the inspection error is minimized. Experimental studies with metallic surfaces help demonstrate the eff cacy and robustness of the proposed methodology.
Autonomous Robots, 2004
This work describes a color Vision-based System intended to perform stable autonomous driving on ... more This work describes a color Vision-based System intended to perform stable autonomous driving on unmarked roads. Accordingly, this implies the development of an accurate road surface detection system that ensures vehicle stability. Although this topic has already been documented in the technical literature by different research groups, the vast majority of the already existing Intelligent Transportation Systems are devoted to assisted driving of vehicles on marked extra urban roads and highways. The complete system was tested on the BABIECA prototype vehicle, which was autonomously driven for hundred of kilometers accomplishing different navigation missions on a private circuit that emulates an urban quarter. During the tests, the navigation system demonstrated its robustness with regard to shadows, road texture, and weather and changing illumination conditions.
Printing Device and Control Method
The present invention provides an apparatus and printing control method. If provided for holding ... more The present invention provides an apparatus and printing control method. If provided for holding the sheet on the sheet holding unit holding the information of the sheet, the printing apparatus prints images on sheets based on the information provided. When the sheet is placed on the sheet holding means, the case where the sheet holding unit of the job has been interrupted, based on the information on sheets designated by the print job is performed.
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Papers by Francisco Javier Rodriguez