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在许多应用领域中 ,要求对光学系统的非线性畸变进行有效实用的校正。如在足球机器人 (MiroSot一种基于视觉信息的精密控制系统 )的视觉系统中 ,对校正速度要求很高 ,这就限制了许多复杂算法的应用 ;多项式变形技术是这一领域的主要方法 ,但对高次模型在计算机求解时 ,由于数值计算的误差 ,如不做特殊处理其解的精确性较差。本文针对足球机器人视觉系统中普遍存在的斜视 ,旋转 ,及非线性畸变 ,建立了合理的多项式近似模型 ,应用数字图像处理技术 ,使用VisualC ++6.0编程 ,对实际的非线性几何畸变图像进行校正。取得了满意的实验结果 ,具有较好的实用价值。
In many fields of application, effective and practical correction of non-linear distortion in optical systems is required. For example, in the vision system of a soccer robot (MiroSot, a precision control system based on visual information), the correction speed is very high, which limits the application of many complex algorithms; the polynomial deformation technique is the main method in this field, however When the high-order model is solved in the computer, the accuracy of the solution is poor due to numerical calculation errors unless it is processed specially. Aiming at the strabismus, rotation and nonlinear distortion prevailing in soccer robot vision system, this paper established a reasonable polynomial approximation model and applied digital image processing technology to correct the actual nonlinear geometric distortion image by using Visual C ++ 6.0 programming . Satisfactory experimental results have been obtained, which has good practical value.