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| 2013-02-28 08:38:54 -0600 | commented answer | Using external image data in a cv::Mat I now wonder how I didn't see that when I was looking at it before. Thank you both. |
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| 2013-02-27 16:40:22 -0600 | asked a question | Using external image data in a cv::Mat I am working on integrating some OpenCV functionality into an existing application that passes data around with pointers. What I want to do is wrap a Mat around the existing data, use some OpenCV functions, then let the data go when I'm done. However, the program is time-sensitive, and I would like to avoid making any copies of the data. I see a few options. First, is there anything equivalent to Eigen's Map<arrayxxd> that does exactly what I want? Secondly, can I simply re-assign Mat's ptr, width, and height variables, then put them back when I'm done? Or is there a different option? Thank you for your help. |