Category Archives: NVIDIA Jetson Xavier NX

Jetson Xavier NX Lesson 5: Improving Raspberry Pi Camera Image Quality in Gstreamer

In this video we show you the keys to radically improving the image quality from the Raspberry Pi Camera. We show how to set Gstreamer caps and props in OpenCV to get stunning image ‘pop’ from this inexpensive camera. If you follow this lesson you will be able to get better image quality from your Raspberry Pi cameras.

The code below has the improved camSet string we developed in this lesson. I have noticed that there can be variation between different Raspberry Pi cameras. Hence, you can adjust the parameters to get the best quality image from your particular camera. Also, results will depend on lighting conditions. You can adjust the wbmode to match your lighting situation, and you can tweak the contrast, brightness and saturation to dial in the perfect picture quality.

 

Jetson Xavier NX Lesson 4: Understanding and Using Gstreamer for Absolute Beginners

In this lesson we show you how to understand the great mystery known as Gstreamer.  Most folks using the NVIDIA Jetson Nano or the NVIDIA Jetson Exavier NX just copy and past the launch string they found on the internet, but do not have a clue how Gstreamer actually works. In this video we will take you through it step-by-step, and show you how to actually understand what you are doing, and how to design your own pipes for maximum performance and image quality. Below are all the commands we used in the video lesson

Jetson Xavier NX Lesson 3: Using a WEB cam or Raspberry Pi camera in OpenCV with Gstreamer

In this video lesson we learn how to launch the Raspberry Pi Camera or a simple WEB cam on the Jetson Xavier NX using openCV and a Gstreamer command. This simple code shows you how to set up the camera, and then how to grab a frame and show a frame to create live video from the cameras.

Jetson Xavier NX Lesson 1: Getting Started and First Boot on the NVIDIA Xavier NX


 

In this video lesson we take you thought the initial setup on the Xavier NX to get you to first boot.  Below are links to the equipment I am using. As you go through these lessons, it will help if we are working on identical hardware:

  1. First, you will need the Jetson Xavier NX, which you can get HERE:
  2. You will want a quality, large SD card, I have very good luck with this one HERE:
  3. You will need a camera. I have found that the Jetson Xavier NX works very well with most Logitech Webcams, but these cameras are a little hard to find right now. I suggest the best option if you do not have a logitech webcam is to get the Raspberry Pi Version 2 camera, which works very well. You can pick the camera up HERE.
  4. It is optional, but I have found that it is nice to have an extra, longer cable for the Raspberry Pi camera, which is available HERE. Also, a small case/stand for the camera is nice and you can get the one I use HERE.
  5. The Jetson Nano has a slot for a SSD drive. I really like having the SSD drive attached, and makes it much easier to keep your work backed up. The projects in these lessons will work fine with just the SD card, but if you like, the SSD drive makes life easier (note even with SSD drive, you will still need the SD card above). You can get the SSD drive I am using HERE.
  6. You can use USB keyboard and mouse, but I like to preserve my USB slots for other things, so like using a wireless keyboard and mouse. This is optional, but I have found these work well on the Jetson Xavier NX, and you can get what I am using HERE.
  7. You will need an HDMI cable and monitor, which you probably already have.

OK, that is it. Get your gear ordered and lets get ready to learn Artificial Intelligence, Machine Learning, Deep Neural Networks and some other really cool things.