There may be many applications such as wildlife monitoring, baby monitoring, or in general security system applications where you may need to monitor both video and audio stream. One such interesting example importance of audio stream is the Rainforest Connection Species Audio Detection challenge on Kaggle. I wanted to use Raspberry Pi to accomplish video + audio streaming using USB camera and a USB microphone. I have this special requirement since I did not want to buy a Pi Camera as I already have a good quality USB camera and just wanted to use this to accomplish what I needed…

Motion Planning essentially answers the question How to get from point A to point B? given the map of the environment. In this project on Udacity, the drone had to navigate through an urban environment with tall buildings to reach the destination specified as GPS coordinates. You can checkout the Udacity project along with my solution to the project here. In this blog post, we will port the Udacity project to Crazyflie, a micro-UAV that can be safely used indoors. …

Udacity Flying Car and Autonomous Flight Engineer (FCND) nanodegree starts out with basics of autonomous flight and provides a broad overview of Unmanned Aerial Vehicles (UAVs) and their history. The first project called the Backyard Flyer is designed mostly to understand ways to interact with the simulator though event-driven python code. Event-driven programming deals with asynchronous nature of a drone where the state of the system changes over time and our code should respond to these state changes as they occur.

I’m in the process of wrapping up my Flying Car and Autonomous Flight Engineer Udacity nanodegree and thought of sharing my experience in porting some of the projects to a real drone a.k.a. UAV (Unmanned Aerial Vehicle). However, before porting any code to a UAV, I had to buy an UAV. Deciding on a specific UAV to buy was a hard decision to make since there are so many options. Someone like me starting out in this space of UAVs would have many questions. Among them, two major questions I had were: Should I build my own UAV?

Tensorflow is a popular choice if you are working on Computer Vision projects such as image classification, object detection, pose estimation, or just any Machine Learning task. I have a MacBook Pro and while using tensorflow, I noticed a warning when importing tensorflow which stated the following.

2020-05-08 19:57:50.106998: I tensorflow/core/platform/] Your CPU supports instructions that this TensorFlow binary was not compiled to use: AVX2 FMA
2020-05-08 19:57:50.128346: I tensorflow/compiler/xla/service/] XLA service 0x7febdd364b60 initialized for platform Host (this does not guarantee that XLA will be used). Devices:
2020-05-08 19:57:50.128370: I tensorflow/compiler/xla/service/] StreamExecutor device (0): Host, Default Version

This warning is…

Stereo vision is the term used for the process of inferring 3D depth information from 2D images¹. 2D images may be from a Stereo Rig, usually consisting of two cameras slightly displaced horizontally similar to our two eyes. In fact, stereopsis¹ takes inspiration from our ability to infer depth information using our eyes. For a deeper explanation of stereo vision, you can refer to²³. A comprehensive and clear explanation of Stereo Vision is presented here⁴. If you would like to understand depth calculation clearly, you can refer to⁵. …

Pramod Anantharam

I’m a Researcher and Engineer working on Machine Learning and Computer Vision related topics. I enjoy working on fun projects in my spare time.

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