Arturo A. Rodriguez

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An image registration approach for inspection of printed circuit patterns which has been validated on a prototype system is described. Theoffline procedure forms, selects, prioritizes, and sorts registration features from CAD-generated reference data. A feature is selected if it satisfies clearance rules that account for the maximum expecteddiscongruence(More)
Video compression is becoming increasingly important with the advent of compression standards and broadband networks. Recently, several block-based motion-estimation algorithms to exploit the temporal redundancies in a video sequence have been reported in the literature. Some of these algorithms tend to be either computationally expensive or to converge to(More)
This paper discusses a video compression and decompression method based on vector quantization (VQ) for use on general purpose computer systems without specialized hardware. After describing basic VQ coding, we survey common VQ variations and discuss their impediments in light of the target application. We discuss how the proposed video codec was designed(More)
Video delivery over wireless and cellular networks can be severely impaired due to bandwidth limitations and also due to the presence of burst losses and signal-loss intervals. This paper proposes unequal protection of Region of interest (ROI) encoded videos for transmission over low-bitrate and error-prone channels. Here, a flexible and interactive ROI is(More)
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