Sanghamitra - if you check the release notes for the Computer Vision System Toolbox found , you will find that the *detectBRISKFeature* function was introduced in R2014a (and so is not available in your version of MATLAB).

while using the detectBRISKFeature, MATLAB 2013 is showing undefined function. Why?

Sanghamitra Koley

2015 3 14

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更新时间：2021 8 20

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Geoff Hayes 2015-3-14

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Sanghamitra - if you check the release notes for the Computer Vision System Toolbox found here, you will find that the detectBRISKFeature function was introduced in R2014a (and so is not available in your version of MATLAB).