# Stitch-a-ton Contest Submission

## Installation

### 1. Build

Install dependencies:
```
wget https://packages.microsoft.com/config/debian/12/packages-microsoft-prod.deb
sudo dpkg -i packages-microsoft-prod.deb
sudo apt update
sudo apt install -y dotnet-sdk-8.0
```

Build the project in `App` folder using command:
```
dotnet publish -c Release -r linux-arm64 --self-contained true -o ./publish
```

### 2. Running the app

After publishing, enter the folder `/publish` then run
```
./StitchATon2.App
```

## Approach
Since we only serve a static assets and the output is downscale only, I think it's good to pre-process each image to [image integral](https://en.wikipedia.org/wiki/Summed-area_table) first and then save it to another directory (eg. temp).

Later, we can apply Box Filter averaging on the fly to output Stream (HttpResponse).