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Description: 包含了对于灰度图像的8种jpeg无损压缩的预测方法，这是用来学习jpeg loseless compression的非常好的例子。idc.h为头文件, image_size.c和readimage.c用来读取目标文件的大小和每个像素的灰度值, jpegll_enc.c和jpegll_dec.c为编码和解码文件。-Contains the eight kinds of gray-scale images jpeg lossless compression of the prediction method, which is used to study jpeg loseless compression very good example. idc.h for the header files, image_size.c and readimage.c used to read the target file size and each pixel gray value, jpegll_enc.c and jpegll_dec.c for encoding and decoding files.
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Size: 7168 |
Author: nan kang |
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Description: jpeg解码器源代码
cjpeg.cpp 解码器类原程序
idct.cpp 解码器类原程序,idct解码函数
cjpeg.h 解码器类头文件
showjpeg.cpp 例子程序原文件
showjpeg.exe 使用本原代码的例子程序
-jpeg decoder source code types of the original decoder cjpeg.cpp procedures decoder category idct.cpp original procedure, idct decoding function of decoder cjpeg.h category header file example showjpeg.cpp procedures using the original document showjpeg.exe primitive example of the procedure code
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Size: 50176 |
Author: zhu |
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Description: 最简单解析jpg文件头的代码。
可以在j2me上运行。
在S60系统上测试通过-Analysis of the most simple jpg file header code. Can run on j2me. In the S60 system test
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Size: 553984 |
Author: Frank |
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Description:
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Size: 309248 |
Author: 金梦 |
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Description: 自动添加jpeg头信息,需要修改一些大小参数-????添 ?觠peg?信?? 需??修 ?囊 恍 ?
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Size: 108544 |
Author: kyo |
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Description: 这是一个用于获取Jpeg文件信息的类模块。-Library to extract various information from the header of JPEG (Joint Photographic Experts Group) image files
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Size: 6144 |
Author: 朱建国 |
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Description: Extracting Header and Data from Jpeg Images
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Size: 4096 |
Author: Rajesh |
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Description: This project features a complete JPEG Hardware Compressor (standard Baseline DCT, JFIF header) with 2:1:1 subsampling, able to compress at a rate of up to 24 images per second (on XC2V1000-4 @ 40 MHz with resolution 352x288).
Image resolution is not limited. It takes an RGB input (row-wise) and outputs to a memory the compressed JPEG image. Its quality is comparable to software solutions.
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Size: 3416064 |
Author: Bill Guan |
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Description:
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Size: 271360 |
Author: Alton |
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Description: 编译源文件生成可执行文件TestLibjpeg.exe，
此程序可以转换bmp位图为jpg格式，或解压缩
jpg格式图像为bmp格式。
将需转换的bmp格式图片存到和TestLibjpeg.exe
相同的文件夹下，在DOS界面下使用命令行参数
bmp到jpeg的转换使用：TestLibjpeg.exe j 原图片名.bmp 目标图片名.jpg
jpeg到bmp的转换使用：TestLibjpeg.exe b 原图片名.jpg 目标图片名.bmp-
AppWizard has created this TestLibjpeg application for you.
This file contains a summary of what you will find in each of the files that
make up your TestLibjpeg application.
TestLibjpeg.dsp
This file (the project file) contains information at the project level and
is used to build a single project or subproject. Other users can share the
project (.dsp) file, but they should export the makefiles locally.
TestLibjpeg.cpp
This is the main application source file.
/////////////////////////////////////////////////////////////////////////////
Other standard files:
StdAfx.h, StdAfx.cpp
These files are used to build a precompiled header (PCH) file
named TestLibjpeg.pch and a precompiled types file named StdAfx.obj.
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Size: 323584 |
Author: cy |
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Description: 本文介绍了Jpeg图像的压缩各个环节设计方案及相关公式及图表，并详细介绍了Jpeg文件的头文件格式-information about Jpeg encoder and Jpeg File Header in Chinese
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Size: 9216 |
Author: 倾泠月 |
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Description: JPEG 静态图像压缩
各文件功能说明如下：
1) JPEG压缩程序：gendat.exe
2) 为压缩后的数据加上JPEG文件头的程序genjpg.exe
3) 解JEPG压缩程序extrdat.exe
其中：（1）的输入参量是需要生成的压缩文件的名字。
主程序流程为：
a) 程序初始化，读取文件名称、原始图像数据等基本数据；
b) 从AC.TAB和DC.TAB两个文件生成AC表和DC表，存入数组
c) 以8×8为样本单位进行DCT变换
d) 以8×8为样本单位进行量化
e) 以8×8为样本单位进行Z形扫描
f) 以8×8为样本单位进行熵编码
g) 以8×8为样本单位进行解量化
h) 以8×8为样本单位进行IDCT变换
-JPEG still image compression
Function of the documents as follows:
1) JPEG compression process: gendat.exe
2) For the compressed JPEG file header data, together with the procedures genjpg.exe
3) The solution JEPG compression program extrdat.exe
Of which: (1) the input parameters is the need to generate the compressed file s name.
The main program flow is:
a) procedures for initialization, read the file name, the original image data and other basic data
b) From the AC.TAB and DC.TAB two file generation AC table and DC table, into an array of
c) with 8 × 8 sample units for the DCT-
d) to 8 × 8 for the sample unit to quantify
e) to 8 × 8 for the sample units of Z-scan
f) to 8 × 8 for the sample units of entropy coding
g) to 8 × 8 for the sample unit to extract the quantitative
h) with 8 × 8 for the sample units IDCT transform
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Size: 12288 |
Author: 太平洋 |
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Description: Implementation of JPEG compression algorithm with JFIF header being appended.This project involves writting code for following steps : Chroma subsampling,partitioning ,level shifting,DCT,quantization,zigzag scanning(involves DC differential coding & AC huffman coding) & adding jfif header following the rules specified in itu-t.81.
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Size: 966656 |
Author: dwn |
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Description: 一个用于与MJPEG标准视频流通讯的Android客户端.基于纯Socket,手动解JPEG帧头.-A standard MJPEG video streams for communication with the Android client based on pure Socket, manually extracting JPEG header.
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Size: 571392 |
Author: czy |
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Description: JPEG-LS的实现方法，可以用于算法仿真分析-JPEG-LS implementations, can be used for algorithm simulation
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Size: 4694016 |
Author: changliang |
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Description: 实现jpeg编码过程源代码，VC++6.0完整工程文件，包括详细注释
包含添加jpeg文件头的工具，测试图片-Jpeg encoding process to achieve the source code, VC++6.0 complete project documentation, including detailed annotation tools to add jpeg file header contains the test image
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Size: 447488 |
Author: mk |
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Description: Insert a JPEG header at start of frame.
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Size: 2048 |
Author: vourvfw |
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Description: Header file of the register interface for JPEG driver on Exynos4x12.
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Size: 2048 |
Author: cpldrer |
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Description: Insert a JPEG header at start of frame.
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Size: 2048 |
Author: waitims |
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Description: jpeg ls head coding in C-jpeg ls head coding
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Size: 5120 |
Author: Alisa |
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