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hdjm
- 抽取子图像: 通过一个随机混沌标签序列从原图像中抽取 对子图像加密:小波变换 ,在高频部分加密 重构原图,把加密好的子图像重新放回到原图像中 -from sub-images : a random chaotic sequence label from the original image from a tradition image encryption : wavelet transform, the high-frequency part of remodeling the
用opencv类库两副图像的特征点匹配
- 两副图像的特征点匹配,其中用了opencv类库,功能包括:特征点的亚像素精度检测,特征点初始匹配,基本矩阵计算及对极约束引导匹配等。matcher.rar网上的都是有错误,而且缺少类库,我把错误改正了,把所有需要的类库都加上了,现在已经编译通过,保证能运行!希望大家喜欢,2 points, matching the characteristics of images, which used the opencv library, features include: Feature Point D
yanyan
- 把一个256*256的图像分成8*8小块,然后进行DFT变换,分别比较在空间域和频域内对图像进行二次抽样和差值最后得出的图像比较-1. Get a grey level image which size is N*N. (For example, 256*256, however, N = ), and partition to 8*8 sub images. 2. Apply DFT to these sub images, and get the fourier transfo
反演解析算法
- 仿真获取四幅互差半个像素的低分辨率图像,利用反演解析算法重建出一副高分辨率图像,属于亚像元技术或者超分辨率技术。-Simulation Interoperability poor access to four half-pixel low-resolution images, the use of inversion algorithm for the reconstruction of an analytic high-resolution images, belong to sub-pixe
hw2
- 1.对一个256*256的图像进行DCT变换得到图像D,将D得斜下角数值置为零,然后进行DCT反变换. 2.对源图像进行K-L转换 1和2比较-1.Get a grey level image which size is N*N. (For example, 256*256, however, N = ), and partition to 8*8 sub images. 2.. Apply DCT to these sub images, and get the transfo
1
- 将一幅256*256的图像分成8*8的小块,对其进行DFT变换。分别比较在空间域和频域内对源图像进行二次抽样和差值最后比较不同-1. Get a grey level image which size is N*N. (For example, 256*256, however, N = ), and partition to 8*8 sub images. 2. Apply DFT to these sub images, and get the fourier transfor
1122zhenyan
- 这个是C制作的源代码。。。 对一幅图像进行DFT变换,分别对源图像在空间域和频域里进行二次抽样和差值,最后得出结果比较。- Get a grey level image which size is N*N. (For example, 256*256, however, N = ), and partition to 8*8 sub images. Apply DFT to these sub images, and get the fourier transformed ima
fengezitu
- 可以将整幅图像分割成大小均一化的子图像,并将每幅子图像分割成单独的图像-Whole image can be divided into sub-image size of homogenization, and each piece of sub-image is divided into separate images
block4x4
- divide the image in to sub blocks
feature_extraction_face_GE
- An automatic facial feature extraction method is presented in this paper. The method is based on the edge density distribution of the image. In the preprocessing stage a face is approximated to an ellipse, and genetic algorithm is applied
RadarSceneMatchingImage
- :采用基于内容的图像检索方法,对雷达景象匹配数据库中的图像数据进行兴趣目标的查询检索与识别.由于 雷达图像具有受斑点噪音影响明显等特点,故综合运用迭代阈值选取以及区域生长的方法,进行兴趣目标(主要是 机场)的分离;由于匹配数据库中图像数据范围比较大,包含目标多,为了在检索过程中确定检索目标在图像中的 位置,预处理时,采用对同一图像多幅子图进行特征提取的方法,最终在检索时通过子图范围来确定目标在大幅图 像上的位置.由实验分析,证明在机场目标的检索识别中,这一方法是可行的.-Cont
xifenkuai1
- 将图像分成16个子块,并对两两块做功率谱密度-divide the image to 16 sub-images
image
- 将图像细分成16个子块,并对两两子块做相位相关-image divide into 16 sub-images, phase correlation
Matlab-Basic-Digital-Image-Processing-Functions.r
- Mut,Div, Add, Sub an image with a constant value.. Median Filtre Histogram Rotate Translate
Wavelet_Packet_group2
- 这两个函数是用来转换成记录的数组(即数组中的每个位置是一个子矩阵)小波包树的过程中这两个函数将有助于pogrammers子图像容易-These two functions are used to convert the wavelet packet tree into array of record (i.e. each location in the array is a sub-matrix)... These two function will help the pogrammers fo
improve-canny
- 这是一个改进的自适应canny算法,该方法采用改进的开关型中值滤波器对图像做去噪工作,再把整幅图像分割为若干子图像,最后在充分考虑全局以及各子图像的边缘梯度信息后,自适应地生成动态阈值。-The new Canny adaptive method divides image into sub-images,then determinates the thresholds automatically according to the whole image edge information and
GetSubImagebyopencv
- 前段时间在OPENCV中做一个小东西,使用到子图像的提取和拷贝,一时间没有找到好的方法,要么直接访问像素进行赋值,要么通过数组来转换,总是感觉别扭,后来终于弄清了一个比较简单的方法,需要利用一下OPENCV中的ROI方法,该方法对于任何格式的灰度或者彩色图像均适用-Do a small thing, some time ago in the OPENCV in sub-images used to extract and copy, for a time did not find a good
t4_4
- 利用离散余弦变换函数(dct2和idct2)模拟JPEG压缩过程。 对“lena.bmp”做压缩,观察压缩效果。(JPEG压缩过程: 首先把原始的图像划分为8×8的子图像,然后利用dct2分别 对各个子图像进行离散余弦变换,对变换系数仅保留左上角15个值, 然后利用这15个系数进行离散余弦反变换重新得到各个子图像,再 将子图像拼接成完整图像) -Using discrete cosine transform function (dct2 and idct2) analog JPEG co
code_13_10_14
- The fusion of images is the process of combining two or more images into a single image retaining important features from each of the images. A scheme for fusion of multi-resolution 2D gray level images based on wavelet transform is presented in this
fenxingbianmadigaijinsuanfa
- 分形图像编码是一个相对较新的图像压缩技术。在分形图像编码中,通过利 用自然图像中存在的不同子图像间的跨尺度相似性(即把图像视为分形) ,一幅图 像用一个使图像近似不变的压缩仿射变换 的参数来表达,压缩文件中储存的是这 些参数的量化值而不是图像本身的象素值-Fractal image coding is a relatively new image compression technology. In fractal image coding, by Lee Similarit