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MATLAB implementation of ORB (oriented fast rotated brief) without opencv mex

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Nice work, thanks! seems no pyramid has been implemented in this ORB if comparing to it in openCV. I am doing similar work, but confused about the operations after extracting...

Index exceeds matrix dimensions. Error in BRIEF (line 10) p2 = I(corners(i,2) + patterns(j,4),corners(i,1) + patterns(j,3)); The column index exceeds the image dimension.

我发现你代码中有很多问题 首先Fast特征点提取之前,应该首先进行高斯滤波处理,去除一些噪音形成的像素点,然后使用高斯金字塔进行进行尺寸不变的处理。 其次进行FAST特征点的提取。然后进行Harris 角点响应值的计算,再使用非极大值抑制,提取变现最好的FAST角点。计算角点方向。 然后进行BRIEF描述的提取。最后进行匹配。 但是我从你的代码中并没有完整的看到这些步骤。是否最后的特征点匹配是存在很大误差的。