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DCT-and-Image-Compression
DCT and Image Compression
In the JPEG image compression algorithm, the input image is divided into
8-by-8 or 16-by-16 blocks, and the two-dimensional DCT is computed for each
block. The DCT coefficients are then quantized, coded, and transmitted. The
JPEG receiver (or JPEG file reader) decodes the quantized DCT coefficients,
computes the inverse two-dimensional DCT of each block, and then puts the
blocks back together into a single image. For typical images, many of the
DCT coefficients have values close to zero these coefficients can be discarded
without seriously affecting the quality of the reconstructed image.
The example code below computes the two-dimensional DCT of 8-by-8 blocks
in the input image, discards (sets to zero) all but 10 of the 64 DCT coefficients
in each block, and then reconstructs the image using the two-dimensional
inverse DCT of each block. The transform matrix computation method is used.
- 2014-01-28 16:55:07下载
- 积分：1
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StudyofGPScarrirphaseestimatioethodinhighdynamicci
鉴于载波相位观测量可提供高精度定位信息的特点,分析了在高动态环境获得载波相位观测量的三种可
能方法,对三种方法的估计精度和动态跟踪能力进行了比较. 提出了一种适合GPS 系统的高动态环境载波相位
测量方案.(View of the carrier phase measurements can provide accurate location information, analyzes the dynamic environment in the high carrier phase measurements to obtain three possible methods, three methods of estimation accuracy and dynamic tracking ability was compared. Presents a GPS system for high dynamic carrier phase measurement program.)
- 2010-11-23 23:20:16下载
- 积分：1
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CTSP_SA
用模拟退火算法解决经典的旅行商问题，有数据，有程序，有解决问题前后的图形对照。有已经过调试。(Simulated annealing algorithm to solve the classical traveling salesman problem, data, procedures, and solve problems before and after the graphics control. Has been debugged.)
- 2012-05-31 22:07:34下载
- 积分：1
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1
说明： calculator using matlab
- 2011-11-17 22:27:30下载
- 积分：1
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HEV_Model_Simulink
文件包含一个混合电动汽车模型，使用SimSCAPE、SimSCAPE电子学、Simscape Driveline和SimSCAPE电力系统构建，这些系统可以被配置为系统级测试或电能质量分析。可以使用不同的子系统来选择电气、电池和车辆动力学系统的模型变型。将SimSCAPE语言创建的电池模型结合到模型中。监控逻辑是用StaseFuffic实现的。该模型可以配置为硬件在环测试。(This file contains a hybrid-electric vehicle model built using Simscape, Simscape Electronics, Simscape Driveline, and Simscape Power Systems that can be configured for system-level tests or power quality analyses. Model variants for the electrical, battery, and vehicle dynamics systems can be selected using variant subsystems. A battery model created with the Simscape language is incorporated into the model. Supervisory logic is implemented with Stateflow. This model can be configured for hardware-in-the-loop testing.)
- 2018-04-28 13:54:56下载
- 积分：1
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Examples
support vector pso examples
- 2011-07-05 19:13:42下载
- 积分：1
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K-medoids-with-the-analysis-
基于聚类的K中心点算法，附带说明文档，代码简单高效，很好的利用了矩阵的代数运算。数学思想较为高深，但通过仔细研读说明文档和动手操作，matlab数学分析能力可以得到有效的提高(K medoids clustering annotated document, the code is simple and efficient, good use of matrix algebra operations. Mathematical thinking is more profound, but by carefully studying the documentation and hands-on the Matlab mathematical analysis ability can be effective to improve)
- 2013-04-09 19:31:42下载
- 积分：1
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code
matlab code for colour ball identificaition
- 2015-02-04 13:46:45下载
- 积分：1
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ANT_AN04_Burst_Transfers
ANT协议中的burst数据传输方式详解，包括收发时序及数据格式。(ANT protocol Detailed burst data transmission, including the timing and receive data format.)
- 2014-01-12 10:07:36下载
- 积分：1
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svm
this code implements a svm face recognition
- 2010-09-25 15:58:30下载
- 积分：1
