Description: 数字图像处理实验
根据原图像的直方图，发现背景和目标的分割值大约在130左右，并将灰度图像转为二值图像，分割效果比较理想。
图像处理实验（六）图像压缩与编码
实验目的： 学习JPEG压缩编码
实验内容：
一．实现基本JPEG的压缩和编码分三个步骤：
1． 首先通过DCT变换去除数据冗余；
2． 使用量化表对DCT系数进行量化；
3． 对量化后的系数进行Huffman编码。-digital image processing experiments based on the original image histogram, found background and objectives of the divided about the value of around 130 and two gray-scale image to image, Segmentation more satisfactory results. Image processing experiments (6) Image Compression and Coding of the experiment : Learning JPEG compression coding experiment : one. Basically JPEG compression and coding in three steps : 1. First through DCT remove data redundancy; 2. Using quantitative table right DCT coefficient quantization; 3. Right quantized coefficients of Huffman coding. Platform: |
Size: 4096 |
Author:qq |
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Description: 直方图均衡：原始图的直方图变换为均匀分布的形式，这样就增加了象素灰度值的动态范围从而达到增强对比度的效果
中值滤波：中值滤波属于非线性平滑滤波器，它可以消除噪声又能保护图象的细节-histogram equalization : the original plan to transform the histogram in the form of uniform distribution. This will increase the value of the pixel gray areas so as to achieve dynamic contrast enhanced effect of filtering : Median filter is nonlinear smoothing filter, it can eliminate noise while preserving image details Platform: |
Size: 1024 |
Author:xuhua |
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Description: 所谓直方图就是在某一灰度级的象素个数占整幅图像的象素比 h=nj/N,其中nj是灰度级在j的象素数，N是总象素数，扫描整幅图像得出的h的离散序列就是图像的直方图，h求和必然＝1，所以直方图可以看成是象素对于灰度的概率分布函数。-Histogram is the so-called gray level in a given number of pixels representing the entire image pixel than h = nj/N, which nj is the gray level of pixels in the j number, N is the total number of pixels, scanning the whole lot images derived from the discrete sequence h is the image histogram, h summation is bound = 1, so the histogram can be viewed as the probability of pixel gray-scale for the distribution function. Platform: |
Size: 1024 |
Author:范灯辉 |
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Description: 基于常用的灰度变换法和直方图均衡化法等图像增强算法,提出了一种对比度增强算法.该算法首先对直方图进行平滑处理,再进行直方图均衡化,然后在整个显示范围内对图像灰度级进行等间距排列,最后对图像进行中-Gray-scale transformation based on common law and the histogram equalization method, such as image enhancement algorithm, a contrast enhancement algorithm. The algorithm first histogram smoothing processing, and then histogram equalization, and then displayed in the entire range of image gray level spacing, etc. with the final image in Platform: |
Size: 1024 |
Author:ivy |
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Description: 图象直方图及均衡.图象直方图的计算方法以及直方图均衡化图象增强技术处理过程。-Image histogram and balanced. Image histogram calculation method as well as the histogram equalization process image enhancement technology. Platform: |
Size: 1024 |
Author:赵少敏 |
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Description: 本实验要求编写一个计算图像直方图的程序并要求讨论直方图均衡化技术，最后对图3.8（a）进行均衡化处理。直方图是多种空间域处理技术的基础，直方图操作能有效的用于图像增强。在实验中根据直方图对应的离散函数可以编写出计算一个图像直方图的函数，直方图均衡化则是借助于直方图灰度变换实现灰度映射从而达到图像增强的目的。实验通过得到原始图像的直方图，直方图均衡化变换函数图和增强后的图像增强后图像的直方图这些实验数据来解释图像被增强的原因。-In this study requested to prepare a procedure for calculating the image histogram and asked to discuss histogram equalization technology, the last of Figure 3.8 (a) a balanced treatment. Histogram is a variety of spatial processing technology foundation, histogram operation can be effective for image enhancement. In the experiment under the histogram corresponding discrete function can be calculated to prepare an image histogram function, histogram equalization is a means of gray-scale transformation to achieve gray histogram mapping so as to achieve the purpose of image enhancement. Experiments have been the original image through the histogram, histogram equalization transformation function maps and enhanced image after image enhancement histogram of these experimental data to explain the reasons for the image was enhanced. Platform: |
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Author:jhm |
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Description: hai I m doing digital image processing project in matlab. so I wnat source code for edge dector algorithm, color histogram and texture algorithm using matlab related source code. Platform: |
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Author:tnp |
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Description: 在进行车牌识别的预处理过程中,如何有效地提高车牌图像质量是一个关键,这一步处理的好坏将直接影响到后面车牌识别的效果。 本文重点研究直方图修改技术增强图像方法在车牌识别预处理中的应用,给出了直方图修改技术的原理,以及直方图均衡化、规定化和对比度调整的原理,最后用MATLAB来实现车牌图像增强的效果。-License Plate Recognition in the pre-treatment process, how to effectively improve the image quality license plate is a key to dealing with the merits or demerits of this step will directly affect the effectiveness of the back license plate recognition. This article focuses on the image histogram modification method to enhance license plate recognition in the pre-processing of applications, given the principle of histogram modification techniques, as well as histogram equalization, contrast adjustment provisions and the principles of using MATLAB to achieve the final vehicle the effect of brand image enhancement. Platform: |
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Author:storm |
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Description: 应用matlab或VC语言编制图像处理软件，软件功能如下：
一、实验类型
1． 读入图像，并对灰度图像或彩色图像进行显示，对彩色图像可以转化为灰度图像；（8学时）
2． 对读入的图像可以实现减小和提高图像分辨率的功能（16学时）
3． 计算灰度图像的直方图并进行显示，讨论不同图像灰度分布的直方图特征（16学时）
4． 对上述图像进行直方图均衡化处理，分析直方图均衡化的处理结果；（16学时）
5． 对给定的彩色图像，显示其R、G、B三分量图像的噪声图像及H、S、I三分量完成中值滤波和均值滤波，模板大小取 ， ， ， ；（16学时）
6． 对上述功能设计功能界面（8学时）
二、设计类型
1、 噪声分析 在不同光照条件下获取图像，从图像中截取一部分背景灰度区（单一灰度），对该子图像进行直方图统计，分析不同光照条件下的噪声强度。
2、 设计一高斯平滑滤波器和加权平滑滤波器，分别采用两种滤波器取模板大小为 ， ， ， 的情况下进行图像平滑，分析两种滤波器的处理结果，并讨论不同模板大小情况下的处理结果。
3、 对上述功能设计功能界面
-VC application or language matlab image processing software, software features are as follows:
First, the experiment type
1. Read into the image, and gray-scale images or color images show that color images can be transformed into gray-scale image (8 hours)
2. To read the image can be reduced and improve the function of image resolution (16 hours)
3. Gray-scale image histogram calculation and display, to discuss the distribution of different gray-scale image histogram features (16 hours)
4. The above histogram equalization image processing, analysis, histogram equalization processing results (16 hours)
5. Of a given color image shows the R, G, B three-component image and the noise image H, S, I completed three-component median filter and mean filter, template size check,,, (16 hours)
6. Functional design features of the above-mentioned interface (8 hours)
Second, design the type of
1, the noise analysis in different light conditions to obtain images from the image Platform: |
Size: 83968 |
Author:yangyong |
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Description: 判断分析法从图象灰度直方图中把灰度值的集合用阀值 T分成两类，然后根据两个类的均值方差(类间方差)和各类的方差(类内方差)的比为最大来确定阀值。-Analysis to determine from the image histogram of the gray value threshold with the set T into two categories, and then based on two types of mean-variance (between-class variance) and various types of variance (intra-party worse) than to determine the threshold for the largest. Platform: |
Size: 88064 |
Author:qinyongming |
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Description: 计算灰度图像的直方图，再对图像进行灰度变换，利用直方图进行图像均衡-Gray-scale image histogram calculation, and then gray-scale transformation of the image, using a balanced image histogram Platform: |
Size: 1024 |
Author:宋立通 |
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Description: 可以对一幅图像提取边缘直方图，很有用的，用与图像匹配-Can extract the edge of an image histogram, useful, and image matching using Platform: |
Size: 5120 |
Author:dd |
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Description: 此程序为基本的图像直方图处理，图像像素的填充处理及像素的平移处理，经过调试可以直接用-This program for basic image histogram processing, image processing and pixel fill-pixel translational processing, through commissioning can be directly used Platform: |
Size: 1024 |
Author:熊淑芬 |
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Description: 灰度直方图是灰度级的函数，描述的是图像中具有该灰度级的像素的个数。它是多种空间域处理技术的基础。直方图操作能够有效用于图像增强；提供有用的图像统计资料，其在软件中易于计算，适用于商用硬件设备。直方图均衡化是通过对原图像进行某种变换，使原图像的灰度直方图修正为均匀分布的直方图的一种方法。图像灰度 直方图均衡化使得图像的灰度分布趋向均匀，图像所占有的像素灰度间距拉开，加大了图像反差，改善了视觉效果，达到增强目的。MATLAB是数字图像处理的常用工具，应用MATLAB的各种函数能够对数字图像进行各种处理。-Histogram (histogram) is the gray level function, describes the gray level image with the number of pixels, the horizontal axis is the gray-scale, vertical axis is the frequency of the gray scale (pixel)
Image gray histogram is a one-dimensional discrete function:
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Author:colin |
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Description: this was my homework in the lesson "digital image processing" it compares my histogram programm with the matlab s original function imhist. i uploaded whole the material but you can find it completely in "ö dev1 rg.docx" my whole homework.-this was my homework in the lesson "digital image processing" it compares my histogram programm with the matlab s original function imhist. i uploaded whole the material but you can find it completely in "ö dev1 rg.docx" my whole homework. Platform: |
Size: 308224 |
Author:ali fatih |
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Description: 在MATLAB环境中得到图像的边缘直方图，这对于做此类毕业设计的人很有用。-In the MATLAB environment by the edge of the image histogram, which for those who do such useful graduation. Platform: |
Size: 1024 |
Author:chengsao |
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Search - Image histogram in matlab