利用空間直線的中心折反射投影的特性對全維視覺系統的標定方法進行了研究。應用光線追跡法提取空間直線折反射圖像上的點，并提出一種基于最小二乘理論的二次曲線擬合方法，將其應用到直線折反射圖像的擬合中，最終求出系統成像參數，完成對全維視覺系統的標定。對真實全維視覺系統的標定實驗驗證了該方法的實用性。
關鍵詞：全維視覺系統；標定；二次曲線；擬合；光線追跡法

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Abstract: This paper introduces the study on omni-directional vision system calibration method using central catadioptric projection property of space line. The catadioptric image point of space line was captured applied ray-tracing algorithm. A conic fitting algorithm based on least-square theory was raised which be used in catadioptric image fitting of line. System imaging parameter was determined by cholsky decomposition and omni-directional vision system was calibration. The calibration experiment on real omni-directional vision system verifies its effect.
Keywords: omni-directional vision system; calibration; conics; fit; ray-tracing algorithm