J. Romeo's profile - activity

What about using threshold on the depth image? Have you tried it?

In my experience, to achieve high speeds or to be able to access/modify certain camera config parameters I've always needed the manufacturer's SDK.

My usual approach is to use the manufacturer's SDK to allocate a memory buffer and save the sequence there. When capture of the sequence is finished, then I convert the images to the OpenCV format (or directly create the Mats with the data pointer pointing to this buffer). This is not a real-time process, but I've been able to capture at around 1000 FPS.

Hi Joan, I've sent you an e-mail message, to your company's headquarters. Found the e-mail address in the "Contact us" section of your webpage. Regards

Maybe cv::line from point to point and the last with the first?

I think so.

There are only a few modules which are not BSD. I can remember SIFT, but may be others...

Added info

Since OpenCV forces people to add stuff under BSD license, unless specifically stated otherwise in special licenses, the following rules apply

 // Copyright (C) 2013, OpenCV Foundation, all rights reserved.
 // Third party copyrights are property of their respective owners.
 //
 // Redistribution and use in source and binary forms, with or without modification,
 // are permitted provided that the following conditions are met:
 //
 //   * Redistribution's of source code must retain the above copyright notice,
 //     this list of conditions and the following disclaimer.
 //
 //   * Redistribution's in binary form must reproduce the above copyright notice,
 //     this list of conditions and the following disclaimer in the documentation
 //     and/or other materials provided with the distribution.
 //
 //   * The name of the copyright holders may not be used to endorse or promote products
 //     derived from this software without specific prior written permission.

So basically you can do anything you want with it, as long as you keep the copyright notice!

Thanks for the answer. What I really wanted was the users to forgive about printing options and to choose "real size (based on image dpi)".

As OpenCV doesn't manage this questions, I will get the work done by creating a high-res image and letting the user to choose the printing size... Basically a change in the user's manual :)

Regards,

Hi all, I'm trying to implement a class that automatically generates markers to locate and identify specific objects by means of a label. The markers are going to be printed and it is mandatory that the printed marker size is known, so I can accurately locate the objects in 3D with a single image.

The obvious approach to me is to modify the image's dpi, but that not seems to be possible in OpenCV. The default dpi of 96 is too small for my application, since at that dpi the mm per pixel are about 0.4. I would need something like 0.1 mm/px.

Does someone know how to change an image's dpi in OpenCV? Have someone found another way to get the images to be printed in a more precise way than printing at 96 dpi?