Undefined function 'detectSURFFeatures' for input arguments of type 'uint8'. "ver" shows computer vision toolbox

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joshuacv 2017 年 1 月 12 日
回答済み: Jyotish Robin 2017 年 1 月 17 日
I am unable to use computer vision system Toolbox for some reason.
ver output is as follows:
---------------------------------------------------------------------------------------------------- MATLAB Version: (R2016a) Operating System: Linux 3.19.0-25-generic #26~14.04.1-Ubuntu SMP Fri Jul 24 21:16:20 UTC 2015 x86_64 Java Version: Java 1.7.0_60-b19 with Oracle Corporation Java HotSpot™ 64-Bit Server VM mixed mode ---------------------------------------------------------------------------------------------------- MATLAB Version 9.0 (R2016a) Simulink Version 8.7 (R2016a) Bioinformatics Toolbox Version 4.6 (R2016a) Communications System Toolbox Version 6.2 (R2016a) Computer Vision System Toolbox Version 7.1 (R2016a) Control System Toolbox Version 10.0 (R2016a) Curve Fitting Toolbox Version 3.5.3 (R2016a) DSP System Toolbox Version 9.2 (R2016a) Fuzzy Logic Toolbox Version 2.2.23 (R2016a) Global Optimization Toolbox Version 3.4 (R2016a) Image Acquisition Toolbox Version 5.0 (R2016a) Image Processing Toolbox Version 9.4 (R2016a) Instrument Control Toolbox Version 3.9 (R2016a) MATLAB Compiler Version 6.2 (R2016a) MATLAB Compiler SDK Version 6.2 (R2016a) Mapping Toolbox Version 4.3 (R2016a) Neural Network Toolbox Version 9.0 (R2016a) Optimization Toolbox Version 7.4 (R2016a) Parallel Computing Toolbox Version 6.8 (R2016a) Partial Differential Equation Toolbox Version 2.2 (R2016a) Signal Processing Toolbox Version 7.2 (R2016a) Simulink Control Design Version 4.3 (R2016a) Simulink Design Optimization Version 3.0 (R2016a) Statistics and Machine Learning Toolbox Version 10.2 (R2016a) Symbolic Math Toolbox Version 7.0 (R2016a) System Identification Toolbox Version 9.4 (R2016a) Wavelet Toolbox Version 4.16 (R2016a)
Another example:
>> which detectHarrisFeatures -all /usr/local/MATLAB/R2016a/toolbox/vision/vision/detectHarrisFeatures.m % Has no license available /usr/local/MATLAB/R2016a/toolbox/vision/vision/@gpuArray/detectHarrisFeatures.m % gpuArray method, Has no license available
I am using a university network license. Any idea what might be the problem? Should I checkout the license?

回答 (1 件)

Jyotish Robin
Jyotish Robin 2017 年 1 月 17 日
Hi Joshua,
It is most likely a temporary shared license issue. If you are trying to use a network license shared with a limited number of users, this could occur. Although the Computer Vision system toolbox has been installed, the license may not be available at that time.
Do a license checkout when this issue occurs. The function 'detectSURFFeatures' is in Computer vision system toolbox and the feature value for license checkout is:
>> license checkout video_and_image_blockset
If it returns 1, which means the license is available, and then try the 'detectSURFFeatures' function again.
If it returns 0, it means the license is not available now.
I hope the above suggestion helps!

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