openjpeg使用教程
时间: 2023-09-06 16:11:13 浏览: 464
OpenJPEG是一款用于图像压缩和解压缩的开源库,支持JPEG 2000格式。以下是使用OpenJPEG进行图像压缩和解压缩的简单教程:
### 安装OpenJPEG
在Linux中,可以使用以下命令安装OpenJPEG:
```
sudo apt-get install libopenjp2-7-dev
```
### 图像压缩
使用OpenJPEG进行图像压缩的基本命令如下:
```
opj_compress -i input_image -o output_file.jp2
```
其中,`input_image`是要压缩的图像文件名,`output_file.jp2`是压缩后的JPEG 2000文件名。
可以通过添加参数来定制压缩过程。例如,以下命令将使用4个线程进行压缩,压缩质量为50:
```
opj_compress -i input_image -o output_file.jp2 -n 4 -q 50
```
### 图像解压缩
使用OpenJPEG进行图像解压缩的基本命令如下:
```
opj_decompress -i input_file.jp2 -o output_image
```
其中,`input_file.jp2`是要解压缩的JPEG 2000文件名,`output_image`是解压缩后的图像文件名。
可以通过添加参数来定制解压缩过程。例如,以下命令将使用4个线程进行解压缩:
```
opj_decompress -i input_file.jp2 -o output_image -n 4
```
希望本教程能够对你有所帮助。
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