Performance optimation MATLAB Image Processing

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?

Answer 1

[Walter Roberson]

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.

Answer 2

[Madhura Suresh]

Have you tried gigecam?

It might give you better performance.

Also, instead of using snapshot - you can increase the FramesPerTrigger, get all the frames and process them later