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Description: %This is a simple function that resamples the image
%at a different pixel size
function nimg = imresample(oldpixsize,img,newpixsize,intmethod)
% This function resamples the images at the new grid points
% defined by the new pixel sizes. It assumes that intensities are
% defined at pixel centers
%
% img : original image to be resampled
% nimg : newly sampled image
% oldpixsize : a vector of the form [xpixsize, ypixsize]
% for the original image, e.g., [0.5,0.5]
% newpixsize : is a vector of the form [xpixsize, ypixsize]
% for the new image, e.g., [0.2,0.2]
% intmethod: same as interp2
% 'nearest' - nearest neighbor
% 'linear' - bilinear
% 'cubic' - bicubic
% 'spline' - spline
% Example:
%
% % Create a 2D gaussian function
% H = fspecial('gaussian',[31,31],5);
% % Resample it at a smaller pixel size
% NH = imresample([1,1],H,[0.2,0.2],'spline');
% figure;subplot(211);imshow(H,[]);title('Original');
% subplot(212);imshow(NH,[]);
% title('Resampled using spline interplolation');
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Size: 1714 |
Author: whitewalter |
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Description: 二维插值的应用。二维插值主要应用于图像处理和数据的可视话。主要方法有：最邻近插值；双线形插值；三次样条插值等方法。该源码可以看出其中区别。-Application of two-dimensional interpolation. Two-dimensional interpolation is mainly used in image processing and visualization of data words. Main methods are: the nearest interpolation double linear interpolation cubic spline interpolation and other methods. The source can be seen the difference between them.
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Size: 1024 |
Author: meng wei |
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Description: 根据所给样本数据用三种不同的方法绘制该公路并估计其长度。
分别用线性插值法、最近邻域插值法和三次样条插值法计算公路长度，并用勾股定理估计公路的长度
-According to the sample data in three different ways, the road map and estimate its length. , Respectively, by linear interpolation, nearest neighbor interpolation domain and cubic spline interpolation method to calculate the length of highways and roads with an estimated length of Pythagorean Theorem
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Size: 1024 |
Author: 云天 |
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Description: 图像插值程序，载入图像后可以进行变形处理，提供的差值方式包括最近邻插值、三次样条插值等。-Image interpolation process can be deformed after loading the image processing methods include providing the difference between the nearest neighbor interpolation, cubic spline interpolation.
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Size: 2205696 |
Author: 兰鹰 |
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Description: Resize
圖像大小變換
void cvResize( const CvArr* src, CvArr* dst, int interpolation=CV_INTER_LINEAR )
src
輸入圖像.
dst
輸出圖像.
interpolation
插值方法:
* CV_INTER_NN - 最近鄰插值,
* CV_INTER_LINEAR - 雙線性插值 (預設使用)
* CV_INTER_AREA - 使用象素關係重採樣。當圖像縮小時候，該方法可以避免波紋出現。當圖像放大時，類似於 CV_INTER_NN 方法..
* CV_INTER_CUBIC - 立方插值.
函數 cvResize 將圖像 src 改變尺寸得到與 dst 同樣大小。若設定 ROI，函數將按常規支持 ROI. -Resize the image size conversion void cvResize (const CvArr* src, CvArr* dst, int interpolation = CV_INTER_LINEAR) src input image. Dst output image. Interpolation interpolation method:* CV_INTER_NN- nearest neighbor interpolation,* CV_INTER_LINEAR- bilinear interpolation (default use)* CV_INTER_AREA- resampling using pixel relationship. The time when the image reduction, the method avoids ripple appears. When the image is zoomed in, like CV_INTER_NN method ..* CV_INTER_CUBIC- cubic interpolation. Function cvResize change the size of the image src and dst are the same size. If the setting ROI, will be general support functions ROI.
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Size: 1024 |
Author: 張天彥 |
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Description: Fast nearest, bi-linear and bi-cubic interpolation for image data,where method is one off nearest, linear, or cubic
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Size: 874496 |
Author: 朴美兰 |
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Description: Fast nearest, bi-linear and bi-cubic interpolation for image data,where method is one off nearest, linear, or cubic
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Size: 7168 |
Author: 朴美兰 |
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Description: 图像线性插值，包括nearest neighbor(pixel duplication)，bilinear，bicubic，lanczos，B-spline， cubic，Fourier zero-padding (sinc)-Image linear interpolation, including nearest neighbor (pixel duplication), bilinear, bicubic, lanczos, B-spline, cubic, Fourier zero-padding (sinc)
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Size: 76800 |
Author: richard |
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Description: 几种插值方法，双线性，三次，最邻近，sinc-Several interpolation, bilinear, cubic, nearest neighbor, sinc
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Size: 12288 |
Author: 苏林 |
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Description: DEM內差,簡單有限元DEM內插方式，包還最鄰近指定法、雙線性法、立方迴旋法。-Poor, simple finite element DEM interpolation of DEM, specify the method of the package also nearest neighbor, bilinear method, cubic roundabout method.
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Size: 8249344 |
Author: 張庭榮 |
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Description: 图像缩放，里面有各种插值算法，很全
OpenGL Nearest Interpolation
OpenGL Linear Interpolation
GLSL Bi-Linear
GLSL Bi-Cubic
Triangular
Bell
B Spline
CatMull-Rom-Image scaling, there are a variety of interpolation algorithm, it is OpenGL Nearest Interpolation OpenGL Linear Interpolation GLSL Bi-Linear GLSL Bi-Cubic Triangular Bell B Spline CatMull-Rom
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Size: 2112512 |
Author: wu |
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Description: 用matlab编写逆投影变换程序，三个m文件分别代表最近邻插值法，双线性插值法，立方卷积插值法，通俗易懂，含有测试图片，打开就能用-Inverse projection transformation program, matlab prepared three m documents represent the nearest neighbor interpolation, the bilinear interpolation and cubic convolution interpolation method, easy to understand, contain a test image, open the can
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Size: 13680640 |
Author: 李雪松 |
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Description: 输入一wav格式声音信号
输出对声音信号进行抽取并插值后的频谱图(源程序为8倍重采样)，并可使用play函数进行播放试听，如play(nearest),play(ori)
有ori原始音质、ups插值音质、downs抽取音质三种及以下五种重采样音质
重采样试听种类有nearest,linear,spline,pchip,cubic，插值算法详见interp1函数
可用过取消注释“高斯白噪声”、“高频噪声”对声音信号加入噪声-Wav format input-output audio signal and extracting the sound signal spectrum after interpolation (resampling source 8 times), and can be played using the play function audition, such as play (nearest), play (ori) with ori original sound, ups interpolation quality, downs and extracted three kinds of sound quality resampling the following five types of resampling audition with nearest, linear, spline, pchip, cubic, interpolation algorithm described interp1 function can be used to abolish the comment " Gaussian white noise" , " frequency noise " of the sound signal to the noise
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Size: 1024 |
Author: jiamenghan |
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Description: 图像缩放是本人参与过的一个项目。本人利用常用的图像缩放算法（如最近邻插值法，双线性插值算法，三次插值算法，B-样条插值等）对图像进行缩放并分析各个算法的优缺点（本文有相应的算法源程序代码）。最后在对算法进行改进。-Image scaling is a project I worked on. I use common image scaling algorithms (such as nearest neighbor interpolation, bilinear interpolation algorithm, cubic interpolation algorithm, B-spline interpolation, etc.) for image scaling and analyze the advantages and disadvantages of each algorithm (corresponding algorithm source code in this article code). Finally, improvements in the algorithm.
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Size: 1465344 |
Author: 小陈 |
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Description: 图像处理，对源图像进行扭曲，采用最近邻、二维插值和三次样条插值。-Image processing, image distortion source, using the nearest neighbor, the two-dimensional interpolation and cubic spline interpolation.
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Size: 91136 |
Author: Freda |
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Description: In mathematics, bicubic interpolation is an extension of cubic interpolation for interpolating data points on a two dimensional regular grid. The interpolated surface is smoother than corresponding surfaces obtained by bilinear interpolation or nearest-neighbor interpolation. Bicubic interpolation can be accomplished using either Lagrange polynomials, cubic splines, or cubic convolution algorithm.
In image processing, bicubic interpolation is often chosen over bilinear interpolation or nearest neighbor in image resampling, when speed is not an issue. In contrast to bilinear interpolation, which only takes 4 pixels (2×2) into account, bicubic interpolation considers 16 pixels (4×4). Images resampled with bicubic interpolation are smoother and have fewer interpolation artifacts.
Suppose the function values f and the derivatives f_x, f_y and f_{xy} are known at the four corners (0,0), (1,0), (0,1), and (1,1) of the unit square. The interpolated surface can then be written
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Size: 11264 |
Author: saadati |
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Description: 提供灰度图的最近邻，双线性，双三次缩放程序，简单易懂，三通道图，对每个通道进行缩放即可。-It s the image resized method of nearest, linear and cubic.
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Size: 2048 |
Author: 小鱼 |
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Description: 插值法处理图像包含最近邻，双线性，双三次插值法处理图像-Interpolation processing image contains nearest neighbor, bilinear, bi-cubic interpolation image processing
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Size: 3276800 |
Author: lilu |
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Description: 采用下拉菜单的方式实现数字插值方式的选择，并通过回调函数完成相应的插值算法和图像显示，在原始数据的输入和处理上，主要采用字符串的写入和读取与处理方式，实现对原始数据读入和分析。本次设计是对单选按钮的使用、按钮控件的应用及轴显示图形应用的综合设计，最终实现了多种插值算法的切换。通过设计与调试，本工具包集成了一维插值和二维插值中的最邻近插值，最小立方插值，线性插值等插值算法，最后达到对同一组数据可以用不同插值方法设计，通过优化处理得到适合插值算法。(The drop-down menu select digital interpolation method, and the callback function completed corresponding interpolation algorithm and image display, in the original data input and processing, mainly uses the string write and read and treatment, to read and analyze the original data. This design is on the radio button, button control application and axis shows the comprehensive design of graphics applications, finally realizes the switching of various interpolation algorithms. Through the design and debugging, the kit integrates the one-dimensional and two-dimensional interpolation method of the nearest interpolation, the smallest cubic interpolation, linear interpolation, such as interpolation algorithm, and finally achieve the same set of data can be designed using different interpolation methods. By optimizing the processing for the interpolation algorithm.)
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Size: 15360 |
Author: jrhc
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