As the mistakes of detecting ellipse points can cause the three-dimensional data matching error, even the measuring task failure in a photogrammetric task, this paper proposes a new correcting scheme for error coded points. The scheme uses the channel code of information theory to design the code points, then divides the codes into information and verification elements based on the linear block codes, so that the generator matrix and the parity-check matrix are implemented. When errors happened, an adjoint matrix is used to correct the mistake. Finally, an encoding is performed to realize the three dimensional match. The proposed method improves the anti-noise property of code points greatly, and has good practical values and wide application prospects. Experiments show that the method is feasible completely and easy to identify. When one code point is wrong, the correctnessrnprobability is 100%.%针对视觉测量中经常发生椭圆点检测错误,影响三维场景的匹配,甚至影响三维重建的问题,设计了一种可纠错的编码点方案.将信息论中的信道可纠错编码方法用于编码点的设计,基于线性分组码将编码分为信息元和校验元,从而设计了生成矩阵和校验矩阵.在检测出错误时利用伴随式矩阵进行纠错,最后进行解码实现三维匹配.分析了编码点的解算及提取,从而大大提高了编码点的抗噪性.该方法不仅具有高的抗噪性能,同时可进一步拓展空间并且具有较好的实用价值.实验表明:文中设计的编码点方案完全可行,具有易于识别、可自行纠错的优点,在发生1位编码点错误的情况下可以实现100％纠错.
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