Search - JPEG image compression in c

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[mpeg mp3] C++0314085 DL : 0: JPEG 标准的最新进展是 1996 年开始制定， 2001 年正式成为国际标准的 JPEG 2000 。与 JPEG 相比， JPEG 2000 作了大幅改进，其中最重要的是用离散小波变换（ DWT ）替代了 JPEG 标准中的离散余弦变换。在文件大小相同的情况下， JPEG 2000 压缩的图像比 JPEG 质量更高，精度损失更小。作为一个新标准， JPEG 2000 暂时还没有得到广泛的应用，不过包括数码相机制造商在内的许多企业都对其应用前景表示乐观， JPEG 2000 在图像压缩领域里大显身手的那一天应该不会特别遥远。 -JPEG standard on the latest progress of the development started in 1996 and in 2001 became the international standard JPEG 2000. Compared with JPEG, JPEG 2000 made substantial improvements, the most important of which is discrete wavelet transform (DWT) instead of the JPEG standard discrete cosine transform. The file size under the same circumstances, JPEG 2000 compressed images of higher quality than JPEG, precision small loss. As a new standard, JPEG 2000 has not yet been widely applied, including digital camera manufacturers in many enterprises have their applications are optimistic about the prospects of the JPEG 2000 image compression areas prone to the day should not particularly remote.
Update : 2008-10-13 Size : 67.35kb Publisher : ldwe
[Multimedia program] jpeg中数据的时频转换 DL : 0: 这是一个用C写的傅立叶变换，以及离散余弦变换的代码，在图象压缩中会用到-This is a C wrote Fourier transform, discrete cosine transform, and the code in image compression will be used
Update : 2008-10-13 Size : 1.3kb Publisher : 陈中
[Other] Peanut DL : 0: 本作品是基于Windows平台使用Visual C++工具开发的多文档应用程序。本课题组成员在对DICOM3.0医学影像存储与传输的国际标准和JPEG 2000静态图像压缩标准学习的基础上，实现了基于JPEG 2000标准的医学图像高效压缩功能，压缩比可在1～300间可调；同时该软件兼容JPEG压缩，压缩比可在1～100间可调。该软件操作简单、界面友好，是PACS系统的一个重要组成部分，对于缓解传输带宽和存储容量的压力具有一定意义。-of the book is based on the Windows platform using Visual C development tool for the multi-document applications. The members of the task group on DICOM3.0 medical imaging storage and transmission of international standards and JPEG 2000 Static state image compression standard on the basis of studies, Based on the realization of the JPEG 2000 standard medical image compression function efficiently, compression ratio can be an adjustable-300; The software also compatible JPEG compression, compression ratio in a ~ 100 adjustable. The software is simple, friendly interface and PACS system is an important component of the For ease transmission bandwidth and storage capacity of the pressure with a certain sense.
Update : 2008-10-13 Size : 899.39kb Publisher : 袁耀辉
[mpeg mp3] C++0314085 DL : 0: JPEG 标准的最新进展是 1996 年开始制定， 2001 年正式成为国际标准的 JPEG 2000 。与 JPEG 相比， JPEG 2000 作了大幅改进，其中最重要的是用离散小波变换（ DWT ）替代了 JPEG 标准中的离散余弦变换。在文件大小相同的情况下， JPEG 2000 压缩的图像比 JPEG 质量更高，精度损失更小。作为一个新标准， JPEG 2000 暂时还没有得到广泛的应用，不过包括数码相机制造商在内的许多企业都对其应用前景表示乐观， JPEG 2000 在图像压缩领域里大显身手的那一天应该不会特别遥远。 -JPEG standard on the latest progress of the development started in 1996 and in 2001 became the international standard JPEG 2000. Compared with JPEG, JPEG 2000 made substantial improvements, the most important of which is discrete wavelet transform (DWT) instead of the JPEG standard discrete cosine transform. The file size under the same circumstances, JPEG 2000 compressed images of higher quality than JPEG, precision small loss. As a new standard, JPEG 2000 has not yet been widely applied, including digital camera manufacturers in many enterprises have their applications are optimistic about the prospects of the JPEG 2000 image compression areas prone to the day should not particularly remote.
Update : 2025-02-17 Size : 67kb Publisher : ldwe
[Picture Viewer] mjpgTools DL : 0: mjpeg静止图像压缩算法库文件M-JPEG（Motion- Join Photographic Experts Group）技术即运动静止图像（或逐帧）压缩技术，广泛应用于非线性编辑领域可精确到帧编辑和多层图像处理，把运动的视频序列作为连续的静止图像来处理，这种压缩方式单独完整地压缩每一帧。 -heavier still image compression algorithm libraries M-JPEG (Motion-Join Photographic Experts Group) technology that movement still image (or frame by frame) compression technology, widely used in the field of non-linear editing to be precise frame editing and multi-image processing, video campaign as a continuous sequence to deal with static images, such compression to separate integrity compresses each frame.
Update : 2025-02-17 Size : 1.48mb Publisher : 王力
[Multimedia Develop] jpeg中数据的时频转换 DL : 0: 这是一个用C写的傅立叶变换，以及离散余弦变换的代码，在图象压缩中会用到-This is a C wrote Fourier transform, discrete cosine transform, and the code in image compression will be used
Update : 2025-02-17 Size : 1kb Publisher : 陈中
[Compress-Decompress algrithms] jpenhuff DL : 0: 此源码为按照jpeg标准编写的huffman压缩程序源代码，主要是进行图像数据压缩-source of this according to jpeg standards prepared by the Huffman compression source code, mainly for image data compression
Update : 2025-02-17 Size : 4kb Publisher : 张
[Graph program] Peanut DL : 1: 本作品是基于Windows平台使用Visual C++工具开发的多文档应用程序。本课题组成员在对DICOM3.0医学影像存储与传输的国际标准和JPEG 2000静态图像压缩标准学习的基础上，实现了基于JPEG 2000标准的医学图像高效压缩功能，压缩比可在1～300间可调；同时该软件兼容JPEG压缩，压缩比可在1～100间可调。该软件操作简单、界面友好，是PACS系统的一个重要组成部分，对于缓解传输带宽和存储容量的压力具有一定意义。-of the book is based on the Windows platform using Visual C development tool for the multi-document applications. The members of the task group on DICOM3.0 medical imaging storage and transmission of international standards and JPEG 2000 Static state image compression standard on the basis of studies, Based on the realization of the JPEG 2000 standard medical image compression function efficiently, compression ratio can be an adjustable-300; The software also compatible JPEG compression, compression ratio in a ~ 100 adjustable. The software is simple, friendly interface and PACS system is an important component of the For ease transmission bandwidth and storage capacity of the pressure with a certain sense.
Update : 2025-02-17 Size : 899kb Publisher : 袁耀辉
[CSharp] openjpeg2000sourcecode DL : 0: 影像压缩的工具 JPEF2000 在 Visual c的原始码-Image compression tools JPEF2000 source code in Visual c
Update : 2025-02-17 Size : 2.66mb Publisher : jeff
[Industry research] Image-Hashing-based-on-Human-Visual-System DL : 0: 提出一种基于视觉特性的图像摘要算法，增大人眼敏感的频域系数在计算图像Hash时的权重，使得图像Hash更好地体现视觉特征，并提高鲁棒性。将原始图像的分块DCT系数乘以若干由密钥控制生成的伪随机矩阵，再对计算的结果进行基于分块的Watson人眼视觉特性处理，最后进行量化判决产生固定长度的图像Hash序列。本算法比未采用视觉特性的算法相比，提高了对JPEG压缩和高斯滤波的鲁棒性。图像摘要序列由密钥控制生成，具有安全性。-Based on the visual characteristics of the image digest algorithm, increasing the human eye-sensitive frequency-domain coefficients in the calculation of the image when the weight of Hash, Hash makes images better reflect the visual characteristics, and improve robustness. Will block the original image multiplied by the number of DCT coefficients generated by the key control of pseudo-random matrix, then the results of calculation based on the sub-block of Watson HVS treatment, and finally quantify the judgments arising from fixed-length sequence of images Hash . Than the algorithm did not use the visual characteristics of the algorithm, improve the JPEG compression and Gaussian filtering robustness. Abstract image sequence generated by the key control, with security.
Update : 2025-02-17 Size : 164kb Publisher : kurt
[Graph program] JPEG_compress_using_MATLAB_and_c DL : 0: 用matlab 和 c联合编程实现JPEG图像压缩,包括量化，霍夫曼编码，解码-Using matlab and c joint programming to achieve JPEG image compression, including quantization, Huffman encoding, decoding
Update : 2025-02-17 Size : 686kb Publisher : liujuan
[Compress-Decompress algrithms] JPEG DL : 0: 处理图形图像,JPEG图像压缩的C语言完整源代码-Handle graphics images, JPEG image compression complete C language source code
Update : 2025-02-17 Size : 4kb Publisher : anlina
[Special Effects] JPEG DL : 0: JPEG源代码C语言实现压缩与解，对学习图像处理有一定的参考意义。-C language source code for JPEG compression and the realization of solutions for image processing to learn some reference significance.
Update : 2025-02-17 Size : 358kb Publisher : yubua
[Embeded-SCM Develop] DCT DL : 0: ARM汇编，实现DCT算法，图像压缩，JPEG 需要loadmemory，里面附带load文件示例以及样子图片，raw格式-ARM compilation and realizing DCT algorithm, image compression, JPEG need loadmemory, incidental load inside sample documents, as well as look like picture, raw format
Update : 2025-02-17 Size : 10kb Publisher : 林锋
[Special Effects] jpeg_dsp DL : 0: 有关图像压缩的jpeg实现算法介绍及其源码-Related to the jpeg image compression algorithm introduced and its source
Update : 2025-02-17 Size : 159kb Publisher : 刘荣国
[2D Graphic] JPEGv1.2.1.tar DL : 0: MPEG, CCITT H.261 (P*64), JPEG Image and Image sequence compression/decompression C software engines. The Portable Video Research Group at Stanford have developed image/image sequence compression and decompression engines (codecs) for MPEG, CCITT H.261, and JPEG. The primary goal of these codecs is to provide the functionality - these codecs are not optimized for speed, rather completeness, and some of the code is kludgey. Development of MPEG, P64, and JPEG engines has not been the primary goal of the Portable Video Research Group. Our research has been focused on software and hardware for portable wireless digital video communication. The charter of this group ended in the summer of 1994.-MPEG, CCITT H.261 (P*64), JPEG Image and Image sequence compression/decompression C software engines. The Portable Video Research Group at Stanford have developed image/image sequence compression and decompression engines (codecs) for MPEG, CCITT H.261, and JPEG. The primary goal of these codecs is to provide the functionality - these codecs are not optimized for speed, rather completeness, and some of the code is kludgey. Development of MPEG, P64, and JPEG engines has not been the primary goal of the Portable Video Research Group. Our research has been focused on software and hardware for portable wireless digital video communication. The charter of this group ended in the summer of 1994.
Update : 2025-02-17 Size : 169kb Publisher : Mic
[2D Graphic] PVRG_JPEG DL : 0: MPEG, CCITT H.261 (P*64), JPEG Image and Image sequence compression/decompression C software engines. The Portable Video Research Group at Stanford have developed image/image sequence compression and decompression engines (codecs) for MPEG, CCITT H.261, and JPEG. The primary goal of these codecs is to provide the functionality - these codecs are not optimized for speed, rather completeness, and some of the code is kludgey. Development of MPEG, P64, and JPEG engines has not been the primary goal of the Portable Video Research Group. Our research has been focused on software and hardware for portable wireless digital video communication. The charter of this group ended in the summer of 1994. -MPEG, CCITT H.261 (P*64), JPEG Image and Image sequence compression/decompression C software engines. The Portable Video Research Group at Stanford have developed image/image sequence compression and decompression engines (codecs) for MPEG, CCITT H.261, and JPEG. The primary goal of these codecs is to provide the functionality - these codecs are not optimized for speed, rather completeness, and some of the code is kludgey. Development of MPEG, P64, and JPEG engines has not been the primary goal of the Portable Video Research Group. Our research has been focused on software and hardware for portable wireless digital video communication. The charter of this group ended in the summer of 1994.
Update : 2025-02-17 Size : 332kb Publisher : Mic
[Special Effects] Jpeg-Test2 DL : 0: C# 实现的jpeg图像压缩压缩标准中的主要算法和实现。vs2008打开。可以使用-C# Implementation of the jpeg image compression standard compression algorithm and implementation in the main. vs2008 open. You can use
Update : 2025-02-17 Size : 308kb Publisher : HolyWang
[Linux-Unix] jpeg DL : 0: 压缩包的内容包括：1.有关JPEG和DPCM算法的文章；2.实现其算法的压缩程序3.有关图像压缩方面的资料。读者请注意： <1>这里讨论的是灰度图像的压缩不涉及彩色图像。 <2>实现压缩时，输入的图像数据采用一种自定义的格式（com 格式），前四个字节记录图像的宽度和高度，之后就是逐行的图像数据，图像的开头和结尾没有任何标记。这种格式的图像数据是从BMP图像中得到的。 <3>这里没有JPEG算法的解压程序，压缩后的数据存成标准的JPEG文件格式，任何视图软件都可以打开。DPCM方法中的解压缩程序将数据仍然存成com格式，可以将其转成PGM格式观看，压缩包中由com转为PGM格式的程序。 <4>所有的C程序均是在Linux（Rethat7.3)下完成。-Compressed package includes: 1. The JPEG and DPCM algorithm article 2. To achieve its compression algorithm procedure 3. The image compression information. Readers please note: <1> discussed here is the gray image compression does not involve color images. <2> to achieve compression, the input image data using a custom format (com format), record the first four bytes of the image width and height, and then is gradually Line of image data, image mark the beginning and no end. This format of image data is obtained from the BMP image. <3> There are no procedures for JPEG decompression algorithm, compressed data stored as a standard JPEG file format, you can open in any view. DPCM method of solution Compressed program data is still stored as com format, you can watch it turn into a PGM format, compressed in the com format to PGM program. <4> All the C programs are in Linux (Rethat7.3) to complete.
Update : 2025-02-17 Size : 1.73mb Publisher : shikaichang
[DSP program] encoderJ DL : 0: 基于BF533芯片,在VisualDSP++4.0开发环境下,使用C语言编写实现Jpeg压缩图片-BF533-based chip, in the VisualDSP++4.0 development environment, using C language realization of Jpeg image compression
Update : 2025-02-17 Size : 476kb Publisher : edward

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