vehicle speed detection using image processing
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sridhar
el 24 de Nov. de 2011
Editada: MathWorks Support Team
el 7 de Jun. de 2022
hi, i am doing a project to find vehicle speed using image processing. the procedure to find the speed is using kinematics equation,our video contains two imaginary lines one is starting line and other is ending line.when vehicle crosses first line counts the time upto vehicle reaches end line.distance between lines known to us and time calculated from algorithm.....how to find when vehicle crosses first line and leaves the second line ....... waiting for reply thanks you in advance
6 comentarios
SHOBA MOHAN
el 31 de Dic. de 2017
Though I got the output, the following error also comes after the execution of the above code mentioned by @Avisekkumar . Can anyone help me how to resolve it?
Too many outputs requested. Most likely cause is missing [] around left hand side that has a comma separated list
expansion.
Error in speed_1 (line 25)
BB=stats.BoundingBox;
Walter Roberson
el 31 de Dic. de 2017
That code is wrong. It assumes that only one region will be found on the video. You can get rid of the error message by using
BB = stats(1).BoundingBox;
but this will just pick out the first thing it finds in the image, without concern about whether it makes sense.
Respuesta aceptada
Image Analyst
el 7 de Jun. de 2022
Editada: MathWorks Support Team
el 7 de Jun. de 2022
2022 Update - In general, with the Computer Vision Toolbox, you can calibrate the camera to the road and use point tracking. The Sensor Fusion and Tracking Toolbox is an option to fuse data from multiple sensors to maintain situational awareness and localization.
Look for significant changes in the line. For example use improfile (to get the intensity profile along a line) and sum the values along the line and see when it make a big change in value.
2 comentarios
Image Analyst
el 25 de Nov. de 2011
Yes it is. Simply have two calls to improfile with different line endpoints.
Más respuestas (4)
Thilakam kuttiannan
el 5 de Dic. de 2017
Editada: Walter Roberson
el 5 de Dic. de 2017
sir
I have a doubt.I am currently doing a project on vehicle speed detection. when I am using your code I am getting an error ??? Undefined function or variable 'vision'. what is the problem with this code. What is an alternative of this error.
sir currently i am using Matlab 2010 b version
waiting for reply thanks you in advance
1 comentario
Walter Roberson
el 5 de Dic. de 2017
The Computer Vision Toolbox did not exist in R2010b. In R2010b, all that existed was https://www.mathworks.com/help/releases/R2010b/toolbox/vipblks/ Video and Image Processing Blockset which was for Simulink.
You would need at least R2012a to use the Computer Vision Toolbox.
Thilakam kuttiannan
el 28 de Ag. de 2018
Editada: Image Analyst
el 28 de Ag. de 2018
Sir
I have a doubt.I am currently doing a project on vehicle speed detection. when I am using your code I am getting an error ??? Insufficient number of outputs from right hand side of equal sign to satisfy assignment.
Error in main (line 28)
BB= stats.BoundingBox;
What is the problem with this code? What is an alternative of this error?
Sir currently I am using Matlab 2015 b version.
Waiting for reply thanks you in advance
Herewith i have attached the coding also
5 comentarios
Ameni chetouane
el 18 de Jun. de 2019
can i send you the video test to your mail address because i couldn't attach the video.
NGUYEN THE VY
el 14 de Mayo de 2022
i dont know how to do the theoretical basis part for this project. I hope anyone help me list me
theory section.
thank you very much!
1 comentario
Walter Roberson
el 14 de Mayo de 2022
See my comment above. You might need to click to expand comments.
https://www.mathworks.com/matlabcentral/answers/22194-vehicle-speed-detection-using-image-processing#comment_516852
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