# gpu-based-image-stitching

**Repository Path**: imoonx/gpu-based-image-stitching

## Basic Information

- **Project Name**: gpu-based-image-stitching
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2024-02-19
- **Last Updated**: 2024-02-19

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

## 0x00 Intro

> This project is a simple implementation of opencv for the following papers.
>
> Du, Chengyao, et al. (2020). GPU based parallel optimization for real time panoramic video stitching. Pattern
> Recognition Letters, 133, 62-69.

Fast panorama stitching method using UMat.

Speed of 4 cameras at 4k resolution is greater than 200fps in 1080ti.

This project does not provide a dataset so it cannot be used out of the box.

一个使用 OpenCV 进行快速全景视频拼接的方法。通过巧妙的流并行策略，在 1080ti 上可以对 4k 视频进行超过 200fps 的图像拼接。

## 0x01 Quick Start

```
$ mkdir build && cd build
$ cmake ..
$ make
$ ./image-stitching
```

## 0x02 Known Issue

* **`Real FPS` is much slower than `FPS`**: `imwrite` takes a lot of time.
* **Stitching will never stop**: I didn't think about the way to use the dataset before, so I added a `dataset branch`. 
You can follow [this commit](https://github.com/duchengyao/gpu-based-image-stitching/commit/210fe9a17eb15a92f5d5eb9dc16d53605abbf44b) to modify your code. 
It will stop after stitching, but the program will not exit. The dataset `datasets/air-4cam-mp4` will generate 149 pictures.

Welcome to pull requests!

## 0x03 Example

> About these procedure below (chinese) http://s1nh.com/post/image-stitching-post-process/ .

| 00.mp4                    | 01.mp4                    | 02.mp4                    | 03.mp4                    |
|---------------------------|---------------------------|---------------------------|---------------------------|
| ![](assets/origin-00.png) | ![](assets/origin-01.png) | ![](assets/origin-02.png) | ![](assets/origin-03.png) |

stitching  
![](assets/01.origin-stitching.png)

exposure-mask  
![](assets/02.exposure-mask.png)

exposure-mask-refine  
![](assets/03.exposure-mask-refine.png)

apply-mask
![](assets/04.apply-mask.png)

final-panorama
![](assets/05.final-stitching.png)