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fpgaJPEGdcode
- 基于fpga的JPEG编解码器设计，采用流水线优化解决时间并行性问题，提高DCT/IDCT模块的运行速度。-based fpga JPEG codec design, the flow of time to solve optimization problems in parallel, enhance DCT / IDCT module of the operating speed.
Image-Hashing-based-on-Human-Visual-System
- 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。
JPEG图像压缩算法
- 基于DCT的JPEG图像压缩算法(matlab版)
SOFTWAREjpeg2
- jpeg 2D DCT transformation project
Brief-instructions-of-JPEG
- 里面是JPEG的标准变换过程，含有离散余弦变换，哈弗曼编码和行程编码-Inside the JPEG standard transform, DCT, Hafu Man coding, run length encoding
Standard-of-JPEG
- 里面是JPEG的标准变换过程，含有DCT变换，哈弗曼编码-Inside the JPEG standard transform, DCT, Hafu Man coding, run length encoding
jpegencoding
- 该文档详细描述了JPEG编码过程，涉及色系变换、DCT变换、量化、Huffman编码等关键步骤，适合JPEG编码入门学习。-The document is a detailed descr iption of the JPEG encoding process involves color transform, DCT transform, quantization and Huffman coding key steps, learning portal for JPEG encoding.
Amnprt-kaur..cmfd-using--DCT-and-SIFT
- Digital images are the most prevalent way to spread a message. So the authenticity of images is very essential. But due to advancement of the technology the editing of images has become very effortless. Copy-move forgery is most basic technique to al
proiect
- In this paper we present the usefulness of the algorithm DCT (Discrete cosine Transform) blocks applied level image compression JPEG (Joint Photographic Experts Goup). It has been shown that this algorithm is the most efficient in the case of compres
backup
- A discrete cosine transform (DCT) expresses a finite sequence of data points in terms of a sum of cosine functions oscillating at different frequencies. DCTs are important to numerous applications in science and engineering, lossy compression of audi
THE FAST COMPUTATION OF DCT IN JPEG ALGORITHM
- THE FAST COMPUTATION OF DCT IN JPEG ALGORITHM