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Description: 基于“鱼眼”的JPEG图像压缩，我毕业设计的内容。在压缩中，通过设置参数可以提高图像四周的压缩率而不破坏主体。提高压缩率- Based on "fish eye" JPEG image compression, my graduation
project content. In the compression, may enhance picture all around
compression ratio through the establishment parameter but not to
destroy the main body. Enhances the compression ratio
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Size: 1002496 |
Author: 王宁 |
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Description: vhdl实现的ＪＰＥＧ嘿嘿 嘿嘿圆圆嘿嘿另-VHDL achieve JPEG laughter laughter another round laughter
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Size: 103424 |
Author: window |
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Description: DIGITAL IMAGERY is pervasive in our world today. Consequently,
standards for the efficient representation and
interchange of digital images are essential. To date, some of
the most successful still image compression standards have resulted
from the ongoing work of the Joint Photographic Experts
Group (JPEG). This group operates under the auspices of Joint
Technical Committee 1, Subcommittee 29, Working Group 1
(JTC 1/SC 29/WG 1), a collaborative effort between the International
Organization for Standardization (ISO) and International
Telecommunication Union Standardization Sector (ITUT).
Both the JPEG [1–3] and JPEG-LS [4–6] standards were
born from the work of the JPEG committee. For the last few
years, the JPEG committee has been working towards the establishment
of a new standard known as JPEG 2000 (i.e., ISO/IEC
15444). The fruits of these labors are now coming to bear, as
JPEG-2000 Part 1 (i.e., ISO/IEC 15444-1 [7]) has recently been
approved as a new international standard.-DIGITAL IMAGERY is pervasive in our world t oday. Consequently, standards for the efficient representation an d interchange of digital images are essential. To date, some of the most successful still image compres sion standards have resulted from the ongoing w contex of the Joint Photographic Experts Group (JP EG). This group operates under the auspices of J oint Technical Committee 1 Subcommittee 29. Working Group 1 (JTC 1/SC 29/WG 1) a collaborative effort between the Internatio 44 Organization for Standardization (ISO) an d Stan International Telecommunication Union dardization Sector (ITUT). Both the JPEG [1-3] and JPEG-LS [4-6] standards were born from the w contex of the JPEG committee. For the last few years , the JPEG committee has been working towards th e establishment of a new
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Size: 1074176 |
Author: slam |
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Description: the loco-i lossless image compression algorithm, principle and standardization into jpeg-ls
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Size: 671744 |
Author: 洪瑞廷 |
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Description: 实现图像数据的JPEG-LS标准的压缩，可以实现无损压缩也可以进行有损压缩-Realize image data standard JPEG-LS compression, lossless compression can be lossy compression can also be carried out
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Size: 4096 |
Author: 小兵 |
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Description: 实现图像数据的JPEG-LS标准的压缩，可以实现无损压缩也可以有损压缩-Realize image data standard JPEG-LS compression, lossless compression can be achieved can also be lossy compression
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Size: 2048 |
Author: 小兵 |
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Description: 实现图像数据的JPEG-LS标准的压缩，可以实现无损压缩也可以进行有损压缩-Realize image data standard JPEG-LS compression, lossless compression can be lossy compression can also be carried out
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Size: 3072 |
Author: 小兵 |
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Description: 实现图像数据的JPEG-LS标准的压缩，可以实现无损压缩也可以进行有损压缩-Realize image data standard JPEG-LS compression, lossless compression can be lossy compression can also be carried out
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Size: 4096 |
Author: 小兵 |
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Description: 实现图像数据的JPEG-LS标准的压缩，可以实现无损压缩也可以进行有损压缩-Realize image data standard JPEG-LS compression, lossless compression can be lossy compression can also be carried out
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Size: 2048 |
Author: 小兵 |
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Description: 实现图像数据的JPEG-LS标准的压缩，可以实现无损压缩也可以进行有损压缩-Realize image data standard JPEG-LS compression, lossless compression can be lossy compression can also be carried out
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Size: 5120 |
Author: 小兵 |
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Description: 实现了JPEG-LS的标准算法，可以同时对BMP,PPM,PGN 图像进行解压缩，还可以支持点交叉扫描，隔行交叉扫描，非交叉扫描三种模式-Achieved a standard JPEG-LS algorithm, can also BMP, PPM, PGN decompressed images can also support the point of cross-scan, cross-interlaced scanning, non-cross-scanning three models
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Size: 4400128 |
Author: jason |
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Description: 改进的JPEG-LS算法，具有运算速度快、压缩比高等优点，可用于遥感图象的压缩。-Improved JPEG-LS algorithm, with a computing speed and high compression ratio can be used in remote sensing image compression.
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Size: 135168 |
Author: 吴天 |
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Description: JPEG-LS中的边缘检测器在高光谱图像谱内预测中的应用-JPEG-LS in the Edge Detection in Hyperspectral Image spectrum prediction application
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Size: 1024 |
Author: 陈永红 |
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Description: 论文主要介绍了JPEG的编码和解码过程。该程序的编码部分能把一张BMP格式的图象进行JEPG编码，压缩成以二进制形式保存的文件；通过相应的解码程序又可以把图象解压缩出来。在图象传送过程中，我们经常采用JPEG格式对静态图象进行编码。JPEG基本系统是一种有损编码，无法完全恢复出原图象，信息有一定的丢失，称为有损压缩。尽管我们希望能够无损压缩，但是通常有损压缩的压缩比(即原图象占的字节数与压缩后图象占的字节数之比，压缩比越大，说明压缩效率越高)比无损压缩的高。JPEG编码先把图象色彩RBG变成亮度Y和色度Cr、Cb，它利用人的视觉对色度不敏感的特点，减少一部分色度数据，以达到压缩。 JPEG采取多种编码方式，包含有行程编码(Run Length Coding)和哈夫曼(Huffman)编码，有很高的压缩比。在编码前，先对数据进行分块，离散余弦变换（DCT）及量化，保留能量大的低频信号，丢弃高频信号以达到压缩。解码时，进行熵解码，反量化，反离散余弦变换（IDCT）。
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Size: 1959936 |
Author: 李明 |
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Description: 该程序主要实现图像的无损压缩，具体算法包括：
（1）整数小波变换＋SPIHT无损压缩
其中整数小波可以采用JPEG2000提供的5－3小波，也可以采用S＋P变换，本程序均已给出。
（2）DPCM＋算术编码
DPCM采用的是JPEG中采用的方法；
（3）JPEG－LS标准
JPEG－LS的无损压缩性能非常好，超过JPEG2000。-The program mainly realize lossless image compression, the specific algorithm include: (1) integer wavelet transform SPIHT Integer Wavelet lossless compression which can be used to provide the 5-3 wavelet JPEG2000, can also adopt the S P transform, the procedures are given. (2) DPCM arithmetic coding DPCM is used in JPEG methodology (3) JPEG-LS standard JPEG-LS lossless compression of very good performance, more than JPEG2000.
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Size: 103424 |
Author: yang |
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Description: 图象压缩(JPEG)编码算法及压缩过程的实现-Image Compression (JPEG) coding algorithm and compression process to achieve
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Size: 41984 |
Author: 朱里 |
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Description: JPEG-LS的可执行代码，程序有详细说明，与算法结合紧密。-JPEG-LS executable code, the program has detailed instructions, and algorithms are linked closely together.
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Size: 2048 |
Author: xurongli |
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Description: Various papers on improvements to the JPEG-LS algorithm. Excellent for research!
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Size: 10853376 |
Author: JP |
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Description: 介绍了静止图像编码方法，特别是对Jpeg,Jpeg2000,Jpeg-LS作了比较和分析。-Introduced the still image coding method, especially for Jpeg, Jpeg2000, Jpeg-LS were compared and analyzed.
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Size: 262144 |
Author: wupeng |
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Description: 基于改进JPEG-LS算法的遥感图像近无损压缩专利，由航天五院508所申报，很详细的介绍了算法和fpga的实现-Improved JPEG-LS algorithm near lossless compression patent, the space the five branches of 508 reporting, a detailed explanation of the algorithm and implementation fpga
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Size: 673792 |
Author: 小化 |
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