针对图像匹配受几何变形的影响, 提出了一种基于相邻像素间的灰度差异来提取图像多像素边缘的方法。采用该方法，能够显著改善因边缘偏移、旋转、尺度变化等原因造成的基准图与实时图的变形对匹配定位的影响。实验结果表明，该方法具有模型简单、实时性强和抗几何变形等特点，且便于实现。

To reduce the influence of geometrical deformation on image matching, we put forward a method which can detect multipixels edge of image. The method is based on difference of gray level between the border upon pixels. Adopting matching method of multipixels edge, matching between datum image and real time image is improved observably because of deformation, such as edge excursion, rotate and scale transformation. The result show that, the multipixels edge detecting and matching method is of simple model, perfect real time quality and power ability to counteract the effect of geometrical deformation. The whole system can be realized easily.