How to increase USB camera resolution?

At the recommendation of this wiki:
http://elinux.org/Talk:Jetson/Cameras
I purchased a Logitech C615 USB web cam to use with my NVIDIA TK1.
I’m running Ubuntu 14.04.1 LTS

The camera is capable of 1920x1080, which I have verified using Cheese, as well as:
sudo apt-get install luvcview
luvcview -d /dev/video0 -L

However, when I run my Python code using OpenCV, the most I can get is 800 x 448.
I’ve tried using the embedded OpenCV that comes with L4T (2.4.13) so that I could benefit from the “built in optimizations” that NVIDIA has done for this special version of OpenCV, however, several websites specifically indicate that the resolution is fixed at 640 x 480 and that since Feb 1, 2016 NVIDIA is still “working on a fix”. More info here:
https://devtalk.nvidia.com/default/topic/913233/jetson-tk1/-opencv4tegra-changing-camera-resolution-solved-/

Next, I tried a native compile of OpenCV (2.4.8) but I still can’t get higher resolutions. Here’s the instructiosn I used:
http://elinux.org/Jetson/Installing_OpenCV

I tried enabling USB 3.0, but that didn’t make a difference.
I bought a USB 3.0 hub <-- no luck here either.
I also tried adding usbcore.usbfs_memory_mb=1000 to the end of extlinux.conf <-- no luck.
I also tried adding vmalloc=384M to the end of extlinux.conf <-- no luck.
I also tried patching lib4vl as described at this site <-- no luck!
https://www.e-consystems.com/Articles/Camera/opencv-jetson-using-13MP-MIPI-camera.asp

I’m running out of options. Has anyone figured out a way to get max resolution out of a USB webcam plugged into the TK1 so that it can be used with Python / OpenCV? I’m a bit disappointed that NVIDIA has all the hype of being the “go-to” platform for computer vision, yet a simple plug-and-play webcam doesn’t work right out of the box.

Thanks in advance for your help!

Hello, x92127:
You can get openCV package and compile the source to support resolution change for USB camera.
To enable libv4l support in V4L/V4L2 for openCV, and resolution can be configured.
Just confirm that the USB camera supports such configuration.

br
ChenJian

Unfortunately, I had to use a non-optimized version of OpenCV to get it to work.
Instructions at this site:
http://docs.opencv.org/3.0-beta/doc/tutorials/introduction/linux_install/linux_install.html

I hope NVIDIA releases an optimized version of OpenCV 3.x for the TK1.