ImageZero

标签：imagezero   无损压缩   图像处理   

ImageZero简介

ImageZero is a high-performance lossless RGB color image compressor/decompressor.

Compared to PNG, it compresses 24 bit PPM files about 20 times faster, and decompresses to PPM about 2 times faster, while the compression rate is nearly as good as PNG for natural photos. ImageZero is not suited for "flat" (computer generated) graphics or grayscale images.

The code is "early work in progress", and neither the image format, nor the library API are fully outlined yet.

下载源码

<span style="font-size:18px;color:#006600;">git clone git://gitorious.org/imagezero/imagezero.git</span>

首先生成配置文件

./buildconf.sh

make: aclocal: Command not found

度娘帮助： 没有安装 libtool

安装libtool

sudo apt-get install libtool

发现要安装autuoconf

sudo apt-get install autoconf

rebuilding configure
rebuilding iz_config.h.in
rebuilding Makefile.in files
configure.in:13: installing `./config.guess'
configure.in:13: installing `./config.sub'
configure.in:7: installing `./install-sh'
configure.in:7: installing `./missing'
Makefile.am: installing `./depcomp'

生成Makefile文件

在buildconf.sh目录中可以看到一个叫做configure的文件，执行它生成配置文件：

./configure

此时在目录中看到有一个叫Makefile的文件

make

/bin/sh ./libtool --tag=CXX   --mode=link g++  -g -O2 -O2 -mmmx -Winline -fomit-frame-pointer -fno-rtti -fno-exceptions   -o iz_test file.o main.o portableimage.o libiz.la 
libtool: link: g++ -g -O2 -O2 -mmmx -Winline -fomit-frame-pointer -fno-rtti -fno-exceptions -o .libs/iz_test file.o main.o portableimage.o  ./.libs/libiz.so
make[1]: Leaving directory `/home/XXX/XXX/ImageZero/imagezero'

测试ImageZero

./iz_test [ c | d ]  inputFile  outputFile

./iz_test --help

./iz_test is a high-performance lossless RGB color image codec

To compress a 24 bit binary PPM image to an IZ file, use
   ./iz_test c input.ppm output.iz
To decompress an IZ file to a 24 bit binary PPM image, use
   ./iz_test d input.iz output.ppm

-rw-r--r-- 1 XXX XXX 2883576 2014-10-25 13:33 ttto.iz
-rwxr--r-- 1 XXX XXX 6718481 2014-10-25 13:30 ttt.ppm

ImageZero

标签：imagezero   无损压缩   图像处理   

原文地址：http://blog.csdn.net/sun_star1chen/article/details/40452001