opencv_webcam/README.md

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<p align="center">
<a href="https://simpleicons.org/">
<img src="./imgs/火箭.svg" alt="Simple Icons" width=64 height=64>
</a>
<h3 align="center">OpenCV Webcam Script</h3>
<p align="center">
基于OpenCV的Webcam程序可用于视频帧采集、重塑尺寸等。具有安装便捷、操作简单等特点</p>
</p>
<p align="center">
<a href="https://pypi.org/project/opencv-webcam-script/"><img src="https://img.shields.io/badge/PyPi-pip%20install-brightgreen?logo=pypi" alt="pip install" /></a>
<a href="#"><img src="https://img.shields.io/badge/latest%20version-v0.1-green" alt="Version" /></a>
<a href="#"><img src="https://img.shields.io/badge/docker-v0.1-blue" alt="Docker" /></a>
<a href="https://gitee.com/CV_Lab/opencv_webcam/blob/master/LICENSE"><img src="https://img.shields.io/badge/license-GPL--3.0-blue" alt="License" /></a>
</p>
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<h3 align="center">更新走势</h3>
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<hr>
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- `2021-12-29` **:zap: [opencv-webcam-script v0.1](https://pypi.org/project/opencv-webcam-script/0.1/)正式上线**
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<h3 align="center">安装教程</h3>
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<hr>
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#### :white_check_mark: 方法一Linux Shell安装开发版
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```shell
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# 克隆项目
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git clone https://gitee.com/CV_Lab/opencv_webcam.git
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# 创建conda虚拟环境以python 3.8为例
conda create -n ow python==3.8 # 虚拟环境名称为ow
conda activate ow # 激活虚拟环境
pip install -r ./requirements.txt -U # 安装OpenCV Webcam脚本
```
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#### :white_check_mark: 方法二pip 快速安装API版
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- 第一步创建ow虚拟环境参见方法一
- 第二步执行pip指令
```shell
pip install opencv-webcam-script
```
- 第三步编写python程序
```python
from opencv_webcam.opencv_webcam import webcam_opencv
# 直接使用webcam_opencv
webcam_opencv(device_index=0, quit_key='q', is_autoSaveFrame=False, frame_saveDir='./webcam', frame_nSave=1, is_headSaveFrame=False, frame_capKey='a', is_resizeFrame=False, resize_frame=[640, 480], resizeRatio_frame=1.0)
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```
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<h3 align="center">使用教程</h3>
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<hr>
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#### :bulb: 常规调用
```shell
# 默认按q键退出
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python opencv_webcam.py
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```
#### :bulb: 设置退出键
```shell
# 默认按q键退出
# 设置z键退出
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python opencv_webcam.py -q z
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# 设置k键退出
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python opencv_webcam.py -q k
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```
#### :bulb: 自动保存帧
```shell
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python opencv_webcam.py -isasf
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```
#### :bulb: 每隔n帧保存一次帧
```shell
# 每隔10帧保存一次帧
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python opencv_webcam.py -isasf -fns 10
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```
#### :bulb: 手动保存帧
```shell
# 默认按a键捕获一帧
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python opencv_webcam.py -ishsf
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```
#### :bulb: 自定义捕获键
```shell
# 设置z键为捕获键
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python opencv_webcam.py -ishsf -fck z
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```
#### :bulb: 重塑帧尺寸(自定义宽高)
```shell
# 重塑宽度300 高度200
# 自动版
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python opencv_webcam.py -isasf -isrf -rf 300 200
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# 手动版
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python opencv_webcam.py -ishsf -isrf -rf 300 200
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```
#### :bulb: 重塑帧尺寸(自定义宽高缩放比)
```shell
# 宽高缩放比为0.5
# 自动版
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python opencv_webcam.py -isasf -isrf -rrf 0.5
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# 手动版
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python opencv_webcam.py -ishsf -isrf -rrf 0.5
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```
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#### :bulb: 设置保存路径
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```shell
# 设置保存路径,默认保存路径为./WebcamFrame
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python opencv_webcam.py -fsd custom_dir -isasf # 以自动版为例
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```