| Summary: | 碩士 === 國立中央大學 === 資訊工程研究所 === 98 === Because of the limited vision, a single lens is not appropriate for video surveillance applications in wide-angle vision. Based on the usage of dual cameras, a real-time continuous images mosaic system which is suitable for wide-angle monitoring is proposed in this study. The system can provide satisfactory real-time streaming video performance while ensuring the continuity of bonding area.
To reduce the computational burden, the complex image bonding procedure is divided into off-line calibration and image stitching phases. In addition, a regional distortion model for calibrating non-radial distortion images is developed. Moreover, the ghost image of overlapping region is removed by a new measure. Finally, both the one-time interpolation approach proposed in this study and the discrete wavelet transform can significantly improve image quality and system efficiency.
The system software has been verified in a personal desktop and an embedded NIOS processor, followed by an analysis of the execution time of each software module to identify and resolve system bottlenecks. The software module is then synthesized into a hardware circuit module by the MIAT hardware synthesis methodology and verified on a FPGA(Field-Programmable Gate Array).
The module verifications and experimental results show that the proposed system can provide a high-quality and high-performance solution, even in the case of moving objects.
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