Performance optimation MATLAB Image Processing
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Hello,
i created a code to do some image processing with the videostream of a gige-Camera. Unfortunately i have some performance issues. May you could help me with some trick?
Here is a short summary of my program:
// get the videostream:
vid = videoinput('gige', 1, 'Mono8');
// use a loop to grap a single frames from the videostream and do some image processing (here corner detection):
for k = 1:100
frame = getsnapshot(vid);
corner_detection = corner(frame, 9,'SensitivityFactor',0.10,'QualityLevel',0.1)
end
Unfortunately this solution is very slow. So is there a way in MATLAB to increase the performance? For exampel use pointer instead of variables?
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回答(2 个)
Walter Roberson
2016-1-19
If you have the Computer Vision toolbox, try http://www.mathworks.com/help/vision/ref/vision.cornerdetector-class.html
Note: No, MATLAB does not offer pointers at the user interface. If you care to write your code in C or C++ then when it is possible to get a true pointer to the data block that stores the array.
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Madhura Suresh
2016-1-20
It might give you better performance.
Also, instead of using snapshot - you can increase the FramesPerTrigger, get all the frames and process them later
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