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The aim of this article is to develop a robust real velocity sensing system for agrimotors such as sprayers and harvesters of which large slip in the fields is unavoidable. Shifting displacement on ground is measured indirectly by using image matching, instead of conventional tachometer measuring method. In so doing, robust sensing system which eliminates the influences of such as bad weather and...
This paper describes a real-time stereo vision sensor based on the Field Programmable Gate Array (FPGA). It was developed using an image matching algorithm called Orientation Code Matching (OCM). Our implementation, using OCM, provides not only high performance, but also flexibility and a greater robustness, all of which are necessary to embed vision sensors in mobile robots and vehicles. The prototype...
In this paper, we propose a velocity sensor for agricultural vehicles by sensing ground motion with robust image matching algorithm called Orientation Code Matching (OCM). The sensor performs velocity measurement with high accuracy and robustness without error by slipping in the fields. The algorithm of OCM is implemented on a Field Programmable Gate Array (FPGA) to perform real-time image matching...
This paper has proposed a novel and robust scheme of image focusing by introducing a new measure of focusing based on orientation code matching. (hereinafter, OCM) A unique pencil-shape profile has been found through comparing the similarity between any patterns extracted at the same position within their own scenes. Based on this profile, a new evaluation function, named complemental pencil volume,...
Speech quality of VoIP (voice over Internet protocol) may potentially be degraded by transmission errors such as packet loss and delay which are basically inevitable in best-effort communications. This study proposes an error concealment technique for such degradation by exploiting a receiver-based technique called pitch waveform replication. For improving the conventional technique, this study investigates...
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