Location:
Search - imrotate
Search list
Description: 本文主要叙述的是利用MATLAB软件实现图像的几何操作。利用imresize() imrotate() imcrop() 等函数实现图像的缩放，选转，剪切。
在对图像的几种几何操作中，图像的缩放和旋转都要用到插值操作。-This paper describes the use of MATLAB software images of geometric operations. Use imresize () imrotate () imcrop () Function Image Scaling , elected to the shear. In the image of several geometric operation, image scaling and rotation should be used interpolation operation.
Platform: |
Size: 639055 |
Author: 刘鎏 |
Hits:
Description: 基于matlab的而二维图像几何变换。与库函数imrotate（a，angle）功能相同。
Platform: |
Size: 26112 |
Author: caoguangying |
Hits:
Description: 本文主要叙述的是利用MATLAB软件实现图像的几何操作。利用imresize() imrotate() imcrop() 等函数实现图像的缩放，选转，剪切。
在对图像的几种几何操作中，图像的缩放和旋转都要用到插值操作。-This paper describes the use of MATLAB software images of geometric operations. Use imresize () imrotate () imcrop () Function Image Scaling , elected to the shear. In the image of several geometric operation, image scaling and rotation should be used interpolation operation.
Platform: |
Size: 638976 |
Author: 刘鎏 |
Hits:
Description: 图像的旋转，数字图像处理与变换的一些学习资料，利用VC实现，比较不错-Image rotation, digital image processing and conversion of some learning materials, using VC to achieve, more good
Platform: |
Size: 200704 |
Author: 红日 |
Hits:
Description: 一个空间点P绕一个中心点C旋转可用接续的三个变换来实现：第1个变换平移点C到坐标系原点位置，第2个变换将点P绕原点旋转，第3个变换平移点C回到其相对于坐标系原点的原始位置。当原始图像点乘以变换矩阵，得到新的图像位置点时，其位置可能不是整数值，该位置的灰度值需要通过灰度插值获得。在不改变输出图像大小的情况下，超出原始图片范围的区域，MATLAB原有函数imrotate的处理方法为将其灰度值全部置零，本文通过取模操作对超出区域进行了另外一种控制方法imrotate_my函数，能够较好的显示出图像旋转的边界变化。
-A space around the center point P C available in three rotating to realize the transformation: the first one translation: C to coordinate transformation, the origin place of 2 transform point P around the rotation, the origin of the three points to the transformation of C translation relative to the original position of axis. When the original image point multiply the transformation matrix, a new image position, the position may not integer, this position gray value by gray interpolation gain needed. No change in the size of the image output circumstance, the area beyond the original image, the original function imrotate MATLAB treatment method for the grey value all zeros, based on beyond the area take mould operation on another control method imrotate_my function, to better show of image rotation boundaries.
Platform: |
Size: 2048 |
Author: 肥猪流 |
Hits:
Description: 基于双线性插值的图像旋转，似于MATlab的imrotate函数功能-imrotatePos
Platform: |
Size: 2048 |
Author: 涂洪国 |
Hits:
Description: clear all
I=imread( lena.bmp )
figure imshow(I)
I2=imrotate(I,-4, bilinear ) 逆时针旋转4度
figure imshow(I2)
I3=fliplr(I) 垂直镜像
figure imshow(I3)
I4=imresize(I,0.5, bilinear ) 缩小为原图的1/2
figure imshow(I4)
A=double(I) 转换为double类型
计算7个不变矩
[nc,nr]=size(A)
[x,y]=meshgrid(1:nr,1:nc) 得到网格
x=x(:)
y=y(:)
A=A(:)
m.m00=sum(A)
if m.m00==0
m.m00=eps
end
m.m10=sum(x.*A)
m.m01=sum(y.*A)
计算均值
xmean=m.m10/m.m00
ymean=m.m01/m.m00
计算中心矩-li9_23.rar
cm.cm00=m.m00
cm.cm02=(sum((y-ymean).^2.*A))/(m.m00^2)
cm.cm03=(sum((y-ymean).^3.*A))/(m.m00^2.5)
cm.cm11=(sum((x-xmean).*(y-ymean).*A))/(m.m00^2)
cm.cm12=(sum((x-xmean).*(y-ymean).^2.*A))/(m.m00^2.5)
cm.cm20=(sum((x-xmean).^2.*A))/(m.m00^2)
cm.cm21=(sum((x-xmean).^2.*(y-ymean).*A))/(m.m00^2.5)
cm.cm30=(sum((x-xmean).^3.*A))/(m.m00^2.5)
im(1)=cm.cm20+cm.cm02
im(2)=(cm.cm20-cm.cm02)^2+4*cm.cm11^2
im(3)=(cm.cm30-3*cm.cm12)^2+(3*cm.cm21-cm.cm03)^2
im(4)=(cm.cm30+cm.cm12)^2+(cm.cm21+cm.cm03)^2
im(5)=(cm.cm30-3*cm.cm12)*(cm.cm30+cm.cm12)...
*((cm.cm30+cm.cm12)^2-3*(cm.cm21+cm.cm03)^2)...
+(3*cm.cm21-cm.cm03)*(cm.cm21+cm.cm03)...
+(3*(cm.cm30+cm.cm12)^2-(cm.cm21+cm.cm03)^2)
im(6)=(cm.cm20-cm.cm02)*((cm.cm30+cm.cm12)^2-(cm.cm21+cm.cm03)^2)...
+4*cm.cm11*(cm.cm30+cm.cm12)*(cm.cm21+cm.cm03)
im(7)=(3*cm.cm21-cm.cm03)*(cm.cm30+cm.cm12)...
*((cm.cm30+cm.cm12)^2-3*(cm.cm21+cm.cm03)^2)...
+(3*cm.cm12-cm.cm30)*(cm.cm21+cm.cm03)...
*(
Platform: |
Size: 1024 |
Author: lzp_llz |
Hits:
Description: 二位图像投影到一维通过imrotate指令完成。可以选择投影的任意角度。同时包括基于一维投影完成重构图像。-Using imrotate commond line to realize the projection of image from 2D to 1D for any view angle. And also include the reconstruction process
Platform: |
Size: 1024 |
Author: tianya |
Hits:
Description: 3 图像基本处理操作（图像显示、读写、像素统计处理、图像文件I/O等）
4 图像质量的客观评价（峰值信噪比PSNR及其应用）
5 图像的代数运算（绝对值差函数imabsdiff，叠加函数imadd，图像的旋转imrotate）
6 视频处理（创建AVI视频）
7 图像增强（直方图、直方图均化、均值滤波、中值滤波）
8 图像形态学分析（膨胀、腐蚀、开、闭运算、轮廓提取）
-3 basic image processing operations (image display, read and write, pixel statistics processing, image file I/O, etc.) 4 objective evaluation of image quality (PSNR peak signal to noise ratio and its application) 5 images of algebraic operations (sum of absolute differences function imabsdiff , superimposed function imadd, image rotation imrotate) 6 video processing (creating AVI video) 7 image enhancement (histogram, histogram equalization, mean filtering, median filtering) 8 image morphology analysis (expansion, erosion, opening and closing operations, contour extraction)
Platform: |
Size: 4096 |
Author: 李辛昭 |
Hits:
Description: MATLAB数字图像处理张德丰这本书中的大部分源程序-MATLAB Digital Image Processing Zhang Defeng this book most of the source
Platform: |
Size: 38912 |
Author: 荣沐 |
Hits:
Description: 自己编写的旋转算法，没有用imrotate函数-havne t use the function imrotate of matlab
Platform: |
Size: 2048 |
Author: zyr_lucia |
Hits:
Description: 练习读入lena.bmp图像，在workspace中查看图像，显示图像，并将此图像存储在C盘根目录下，命名为1.bmp。
读入两幅尺寸相同的图像(lena.bmp和sky.bmp)，做加法，实现双曝光的效果。
读入两幅尺寸相同的图像(2.bmp和2background.bmp)，做减法，实现减背景效果。
读入lena.bmp图像，编写一个模板，此模板是以图像中心为圆心，64像素为半径的圆内为1，其他位置为0，以此模板乘以读入的lena图像，显示结果。
用图像除法完成减背景操作（ 5.bmp和5background.bmp运用公式：f=g ÷ b х m ）。
已知信号整数时刻1至10秒的幅值为[10,25,33,17,50,5,76,17,78,80]，用线性插值方法，求[1.3,1.77,2.58,3.85,9.65]这5个时刻的信号幅值。（要自己写函数完成此题目，不要直接用matlab现成的插值函数）。
利用help文档，自学imrotate、imresize和imcrop函数的用法-Practice reading into lena.bmp images, view the image in the workspace, display images, and the images are stored in the root directory of C named 1.bmp.
Read into two of the same size the image (lena.bmp and sky.bmp) do addition, to achieve the effect of double exposure.
Read into the two dimensions same of images (2.bmp 2background.bmp), and subtract to achieve the effect of background subtraction.
The image reads lena.bmp write a template, this template is the center of the image to the center and 64 pixels for the radius of the circle is 1 other location, this template is multiplied by lena image reads and displays the results.
Image division completed less background operation (5.bmp, and 5background.bmp use of the formula: f = the g ÷ b х m).
The known signal integer time of 1-10 seconds amplitude [10,25,33,17,50,5,76,17,78,80 using a linear interpolation method,, [1.3,1.77,2.58,3.85, , 9.65] this is five times the signal amplitude. (To write your own functions to complete t
Platform: |
Size: 2048 |
Author: 单车少年 |
Hits:
Description: 对“2.1.bmp”图像操作，将其放大至原来大小的1.5倍，采用双线性插值方法放大。
对“2.1.bmp”绕图像中心逆时针旋转20度，采用双线性插值方法。此题目不要使用imresize和imrotate函数，自己写程序完成。
2.对畸变图像进行矫正:”2.2.bmp”为畸变后的图像，已知畸变后图像上的四个点（118，88）（90，140）（139，168）（168，116）对应畸变前的点分别为为（98，98）（98，158）（158，158）（158，68），用对应点约束法求畸变前的图像。（题目中的坐标为行-列坐标；涉及到的插值用双线性插值法）
3.利用离散余弦变换函数（dct2和idct2）对“lena.bmp”做压缩，观察压缩效果。
-Image manipulation, "2.1.bmp" zoom to 1.5 times the original size, using bilinear interpolation method to enlarge.
"2.1.bmp" around the center of the image counterclockwise rotation of 20 degrees, a bilinear interpolation method. This topic Do not use imresize, and imrotate function, write your own program to complete.
2 of the distortion of the image to be corrected: "2.2.bmp" image after distortion, it is known that the four points on the image of the distortion (118,88) (90,140) (139,168) (168,116) corresponding to distortion prior to the point were to (98,98) (98,158) (158,158) (158,68), with a corresponding point constraint method seeking the image in front of the distortion. (Coordinates in the subject line- column coordinate involves interpolation with bilinear interpolation)
3 using discrete cosine transform the function (dct2, and idct2) "lena.bmp" do the compression, to observe the compression effect.
Platform: |
Size: 2048 |
Author: 单车少年 |
Hits:
Description: 实现图像的逆时针旋转任意角度。关键部分：通过p=inputdlg(prompt, input ,1,defans) p1=str2num(p{1}) 来输入旋转参数。
通过函数f=imrotate(handles.img,p1, bilinear , crop ) 实现翻转。
-Counterclockwise rotation of the image at any angle. Key part of the input rotation parameters: p = inputdlg (prompt, ' input' , 1, defans) p1 = str2num (p {1}) By function f = imrotate the (handles.img, p1 ' bilinear' , ' crop' ) achieve flip.
Platform: |
Size: 1024 |
Author: zhang keshi |
Hits:
Description: IMAGE ROTATE PROGRA-IMAGE ROTATE PROGRAMMMMMMMM
Platform: |
Size: 3072 |
Author: dhaval |
Hits:
Description: 使用双线性插值的图像旋转，和本站的其余旋转不同，我的旋转不会使图像缺角，好处就是旋转后他的傅里叶变换的频域图也旋转同样的角度，同样可以用来处理矩阵，来做滤波器，我在做方向滤波器，有兴趣要的可以m我。-Using bilinear interpolation, image rotation, and the rest of the rotation is the rotation does not make the image Cutaway, the advantage is that the rotation after his Fourier transform frequency domain also rotates the same angle, can also be used to handle the matrix, do the filter, I was doing directional filter, interested to m.
Platform: |
Size: 1024 |
Author: 陈雨露 |
Hits:
Description: 适用于matlab 的图形旋转代码，可自定义旋转角度，使用邻近插值不全图像-Applicable to matlab graphical rotation code, the rotation angle can be customized using the neighbor interpolation incomplete picture
Platform: |
Size: 11264 |
Author: 王隶桢 |
Hits:
Description: radon自编函数，简单算法，imrotate实现-radon self function, a simple algorithm, imrotate achieve
Platform: |
Size: 1024 |
Author: 邹 |
Hits:
Description: 用于计算图像旋转角度以及进行校正，利用matlab语言开发-image imrotate degree
Platform: |
Size: 51200 |
Author: tostar |
Hits:
Description: image roate with random angle
Platform: |
Size: 1024 |
Author: kfir |
Hits: