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Description: 实现输入一个数字，产生这个位数的所有格雷码-Enter a number of implementation, resulting in the median of all the Gray code
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Size: 5120 |
Author: 叶 |
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Description: 格雷码问题
1.问题描述
对于给定的正整数n，格雷码为满足如下条件的一个编码序列：
(1) 序列由2n个编码组成，每个编码都是长度为n的二进制位串。
(2) 序列中无相同的编码。
(3) 序列中位置相邻的两个编码恰有一位不同。
例如：n=2时的格雷码为：{00, 01, 11, 10}。
设计求格雷码的递归算法并实现。
-Gray-code problem 1. Problem description for a given positive integer n, Gray code to meet the following conditions of a coding sequence: (1) coding sequence by the 2n months, each code is a length of n-bit binary string. (2) without the same sequence number. (3) the location of sequences adjacent to exactly two has a different encoding. For example: n = 2 when the Gray code is: (00, 01, 11, 10). Designed for Gray code and implementation of the recursive algorithm.
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Size: 1746944 |
Author: 刘珊珊 |
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Description: 摘 要
文章以空间监控系统为背景,深入研究了JPEG图像压缩标准的实现方法,并基于FPGA对其进行了实现和优化。文中给出了详细的实现方法和优化过程,测试表明达到了很好的效果。
简单介绍了有损静态图像压缩当前有两种比较流行的标准JPEG和JPEG2000。说明了用JPEG方法压缩的原因。
介绍JPEG基本原理：JPEG对灰度图像的压缩处理过程主要包括:图像分割,离散余弦变换(DCT),量化(Quantization),“Z”形排序(Zigzag Scan),差分脉冲编码调制(Differential Pulse Code Modulation,DPCM)对直流系数(DC),行程长度编码(Run-Length Encoding,RLE)对交流系数(AC),霍夫曼(Huffman)编码等。
JPEG标准的特点是离散余弦变换。
比较详细介绍压缩系统的构成和实现。实现提及步骤， JPEG压缩模块设计和编码模块实现细节。
-Abstract
Article in the space monitoring system for the background, in-depth study of the JPEG image compression standard implementation methods and carried out based on FPGA implementation and optimization. In this paper, a detailed method of implementation and optimization of the process, testing showed that to achieve good results.
Easy introduction of harmful static image compression has two kinds of comparisons that the current popular standard JPEG and JPEG2000. Illustrated by the reasons for JPEG compression method.
JPEG introduce the basic principles: JPEG compression of gray-scale image processing include: image segmentation, discrete cosine transform (DCT), quantization (Quantization), "Z"-shaped sort (Zigzag Scan), differential pulse code modulation (Differential Pulse Code Modulation, DPCM) on the DC coefficient (DC), Run Length Encoding (Run-Length Encoding, RLE) of the exchange coefficient (AC), Hoffman (Huffman) coding.
JPEG standard is characterized by discrete
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Size: 523264 |
Author: 压子 |
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Description: it s a matlab code for reduce gray level
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Size: 1000448 |
Author: carl |
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Description: 用VC编写得灰度拉伸、拉普拉斯高斯边缘检测和图像的3D灰度显示得代码-VC with the preparation of a gray-scale stretch, Laplacian of Gaussian edge detection and 3D images show a gray code
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Size: 3072 |
Author: bunny |
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Description: 图像自适应分割，大津法计算灰度阈值，MATLAB源程序。-Adaptive image segmentation, gray Otsu threshold method, MATLAB source code.
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Size: 1024 |
Author: xuyajun |
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Description: 一种基于格雷码的异步FIFO设计与实现,8*8位的fifo VHDL 源码-Gray-code based on the Asynchronous FIFO Design and Implementation
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Size: 90112 |
Author: qwe |
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Description: 图像的边缘是指图像中邻域灰度有显著变化
的像素的集合。它是图像的基本特征, 因此边缘检
测方法在图像处理中成为一个十分重要的课题。经
典的边缘提取方法是考察图像的每个像素在某个邻
域内灰度的变化, 利用边缘邻近一阶或二阶方向导
数变化规律, 用简单的方法检测边缘。但是, 因为边
缘和噪声都是高频信号, 因此许多经典边缘检测算
法很难在边缘和噪声中做出取舍。在众多的边缘检
测算子中, 算子因为具有优良的边缘检测能
力, 因此在图像处理中得到广泛应用。-The edge of the image refers to the neighborhood gray-scale images have seen a significant change
A collection of pixels. It is the basic feature of image, so the edge of the seizure
Measurement method in image processing has become a very important issue. By
Code extraction method is to investigate the edge of each image pixel in a neighborhood
Gray-scale changes in the region, using the edge of the neighboring first-order or second-order directional derivative
Changes of a few simple ways to detect the edge. However, because the edge
Edge and noise are high-frequency signals, so many of the classical edge detection operator
Law at the edge and noise it is difficult to make trade-offs. At the edge of a large number of seized
Son of measurement, because the operator has an excellent edge detection can
Force, so image processing is widely used.
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Size: 299008 |
Author: wangbin |
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Description: 在数字图像中虹膜位置的有效定位是虹膜识别的关键问题。用一种基于主动轮廓线模型的方法定位虹膜的位置，先用灰度投影法检测出瞳孔内的一点作为瞳孔的伪圆心，该圆心只要能落在瞳孔内部即可。然后以该伪圆心为中心，在其周围等角度间隔地取N个点作为初始的snake基准点，按照snake 的运行机制不断进化，直到虹膜的内边界为止。最后，计算进化后的snake形心和snake上的控制点与该形心的距离，取其平均值作为瞳孔的半径，动态轮廓模型的形心作为瞳孔的圆心，即可准确定位出虹膜内边界的位置。实验表明，与常见的定位方法相比，文中的方法速度快、精度高，而且，对瞳孔初始的伪圆心要求不高，鲁棒性更强。-Digital image of the iris in the location of the effective positioning of the key issues of iris recognition. With a model based on the active contour method of positioning the location of the iris, the first gray projection method used to detect the pupil as the point of the pseudo-pupil center, the center of a circle as long as it can fall within the pupil. And then to the pseudo-center as the center, in terms of their spacing around the N points to get the snake as the initial reference point, the operating mechanism in accordance with the snake continued to evolve until the border until the inner iris. Finally, after calculating the evolution of snake and snake-shaped heart of the control point on the centroid distance, choose the average as the radius of the pupil, the dynamic contour model of the centroid as the center of pupil can be an accurate positioning within the borders of the iris position. The experimental results show that the position with common methods, the methods o
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Size: 1764352 |
Author: 侯汶杉 |
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Description: a very handy code to compress gray scale images useing spiht algorithm it the original file without improvement
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Size: 2365440 |
Author: code_breaker |
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Description: 灰色预测GM（1，1）模型的matlab源代码，包括预测模型的建立，以及模型的精度检验指标c,p的计算-Gray prediction GM (1,1) model matlab source code, including the prediction model, as well as indicators of model accuracy test c, p calculation-Gray prediction GM (1,1) model matlab source code, including the establishment of forecasting model, as well as test the accuracy of the model indicators c, p calculation-Gray prediction GM (1,1) model matlab source code, including the prediction model, as well as indicators of model accuracy test c, p calculation
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Size: 1024 |
Author: zhanghaibo |
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Description: 非常简单的代码，包括工程文件、运行功能的灰化代码-Very simple code, including engineering documents, operational features of the gray code
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Size: 1092608 |
Author: 猴子 |
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Description: This code compress the image using wavelets. Both gray scale and RGB images can be applied and some
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Size: 1024 |
Author: vt2k8 |
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Description: matlab简易游程编码，针对二值灰度图像。
有压缩和加压及主程序部分，压缩和加压函数调用。-matlab simple run-length coding for gray image binarization. There are compression and pressure and the main program of the compression and compression function call.
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Size: 1024 |
Author: 陈自远 |
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Description: ofdm code in matlab,use bpsk,gray code,-ofdm code in matlab,use bpsk,gray code,..
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Size: 5120 |
Author: fery |
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Description: code for computing the entropy of gray scale image, including to calculate the local entropy (especially for matlab 7.0 and lower that dont have entropy and entropyfilt function)
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Size: 1024 |
Author: herlina |
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Description: 本程序通过对图像进行灰度化、去噪和边缘提取，能检测出不垂直的刻度线边缘并能将其旋转校正，从而达到使刻度线标准化的目的-This procedure of gray-scale images, and de-noising and edge detection can not detect the edge of the vertical line of the scale and be able to spin correction, so as to achieve so that the purpose of standardization of calibration line
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Size: 3072 |
Author: sunhong |
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Description: 一个格雷码计数器，利用Verilog语言实现，一个初学者的好例子。-A Gray-code counters, the use of Verilog language, a good example for beginners.
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Size: 1024 |
Author: speed |
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Description: 本代码主要实现图像类文件的转换已经相应的图像处理，包括图像融合，灰度变换，模板匹配等-The main achievement of the code conversion of image types of documents have a corresponding image processing, including image fusion, gray-scale transformation, template matching, etc.
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Size: 4004864 |
Author: 廖小超 |
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Description: 算法设计中经典的格雷码生成问题，采用分治法解决，代码精炼-Algorithm design in the classic Gray code generation problems, the use of sub-rule law, code refined
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Size: 1024 |
Author: |
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