Undefined variable "vision" or class "vision.HoughTransform".

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James Kempton
James Kempton 2019-3-6
回答： James Kempton 2019-3-6
I am using MATLAB version 2018b. I have the Computer Vision Toolbox installed as confirmed by using the ver command. However, upon using the following code:
hhoughtrans = vision.HoughTransform(pi/360,'ThetaRhoOutputPort', true);
I receive the following error message: Undefined variable "vision" or class "vision.HoughTransform".
Similarly, when using:
hhoughlines = vision.HoughLines('SineComputation','Trigonometric function');
I receive: Undefined variable "vision" or class "vision.HoughLines".
My conclusion is that vision.HoughTransform and vision.HoughLines are no longer supported though I haven't seen anywhere something to the contrary. Is this conclusion correct or could there be another issue?

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采纳的回答

James Kempton
James Kempton 2019-3-6
Thuis is the output of ver:
ver.PNG
So I have it installed. I presume it is licensed given I have a license or are these different things?
  1 个评论
Sean de Wolski
Sean de Wolski 2019-3-6
Hmm. It's doing the same thing for me. The release notes states that they planned on removing this at some point:
release notes
But yet I still see it mentioned in Fixed Point Deisgner in 18b so there's a bug somewhere, doc or otherwise.

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更多回答（2 个）

Sean de Wolski
Sean de Wolski 2019-3-6
Do you have the computer vision system toolbox installed and licensed?
ver
James Kempton
James Kempton 2019-3-6
Thanks for the information Sean. I'll just use hough instead.

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