Making Accompaniment for Guitar Solo on Mac

I recently found out a solution to get the accompaniment to my phone, so that I can play along with it. There are some quality-wise compromises but overall it is good enough for me.

Minimalist-Style Demo of Running Neural Networks in Web Browser

This demo shows how to run a pre-trained neural networks in web-browser. The user would first download the pre-trained style transfer model to local by opening up the webpage. Then everything will get processed locally without accessing any remote resource. The user can then open-up a picture from their hard drive and click “run” to let the style transferring neural networks to do its job.

A PyTorch GPU Memory Leak Example

I ran into this GPU memory leak issue when building a PyTorch training pipeline. After spending quite some time, I finally figured out this minimal reproducible example. Kicking off the training, it shows constantly increasing allocated GPU memory. This “AverageMeter” has been used in many popular repositories (e.g., https://github.com/facebookresearch/moco). It’s by-design tracking the average of […]

How to contact USCIS and what to expect

For any foreigner in the US, when it comes to immigration related issues, there are always a lot of stories to tell. My recent story is about renewing my EAD (work authorization in the US) card. After I sent out my renewal application, I have tried multiple methods to contact USCIS and would like share […]

“Distribute” an under development app without enrolling iOS Developer Program

You are developing an iOS App. Prior to Xcode 7, you have to enroll into Apple’s iOS Developer Program (IDP) to install an App to a device, either yours or your friend’s. Now in Xcode 7, you can compile and deploy an under development App to your device. The problem is: How do you “distribute” […]

Build a Robot From A Power Wheelchair (1/2)

I have been working on a robotic project for a while. In this project, we build a robotic wheelchair controlled by head motions. It starts from a commercial powered wheelchair (Titan Front Wheel Drive Power Chair). We took over the control signals, added a number of sensors and wrote some computer vision softwares. It is […]

Convert the saved checkpoint of cuda-convenet to the proto of Caffe

*Credits of the scripts go to jamt9000 on github, thanks for the helpful work! You are a deep learning consumer, you have a saved check point you trained with the cuda-convenet. You want to use Caffe to evaluate the trained neural networks on new data possiblely due to the absent of GPU. Hence you need […]

[OpenCV] detectMultiScale: output detection score

OpenCV provides quite decent implementation of the Viola-Jones Face detector. A quick example looks like this (OpenCV 2.4.5 tested): // File: main.cc #include using namespace cv; int main(int argc, char **argv) { CascadeClassifier cascade; const float scale_factor(1.2f); const int min_neighbors(3); if (cascade.load(“./lbpcascade_frontalface.xml”)) { for (int i = 1; i < argc; i++) { Mat img […]