Description: 利用矩特征可以从二维图像识别三维目标,4阶矩的图像峰值反映了目标的形状,为了使它具有平移、比例和旋转不变性,作者对其进行了归一化处理。-use Moments from the three-dimensional two-dimensional image recognition, four bands peak moments of images reflect the shape of the target, In order to give it scale, translation and rotation invariant, the author of its normalized treatment. Platform: |
Size: 142336 |
Author:王城 |
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Description: matlab编写的对灰度图像的数字水印添加与提取程序。压缩包中有示例图片。可以添加水印，结果肉眼不易分辨出变化，不影响使用。可加入信息长度达10k字节。提取时可验证是否被修改过，如未修改，可提取隐藏信息。可标记修改位置。当图像发生旋转，缩放，少量平移时，仍能提取出强水印信息，以确保图像来源。弱水印识别率高，强水印识别率不是很高，当图像变化较小时，可以工作，变化较大时，强水印也无法提取。-matlab prepared on the gray image to add the digital watermark and extraction procedures. Compression package has sample images. Can add watermarks, the results of the changes are not easily distinguishable from the naked eye, does not affect use. Information can be added up to 10k bytes in length. Verifiable extraction has been modified, if modified, can extract hidden information. Can modify the location of tags. Occurred when the image rotation, zooming, a small amount of translation were able to extract strong watermark information, to ensure that the image source. Weak watermark high recognition rate, strong watermark is not very high recognition rate, when the image changes in small, can work, changes in large, strong watermark can not be extracted. Platform: |
Size: 9216 |
Author:张亮 |
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Description: Lucas-Kanader-Tomasi Feature Tracker，由运动恢复结构的问题，目的是从一组由摄像机移动获得的图像来恢复一个场景的立体结构。对于这个问题，C.Tomasi和T.Kanade[1]于1992年提出了一种Factorization的方法，可以有效地避免噪声的干扰，同时不会受限于特定的运动模型，例如单纯的平移或是旋转。-Lucas-Kanader-Tomasi Feature Tracker, by the movement to restore the structure of the problem, aimed at a group of mobile access by the camera image to restore the three-dimensional structure of a scene. For this problem, C. Tomasi and T. Kanade [1] in 1992 proposed a factorization method which can effectively avoid noise interference, while not restricted to a particular motion model, such as pure translation or rotation . Platform: |
Size: 186368 |
Author:梁霄 |
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Description: Matlab_基于FFT的图像配准
粗估算两幅图像之间的平移差，返回水平方向平移差到xtran，返回垂直方向平移差到ytran
用在图像配准中的粗匹配中，对噪声、图像中物体发生运动等极为鲁棒！-FFT-based Matlab_ Image Registration rough estimate of the translation between two images, poor, poor translation to return to the horizontal direction to xtran, to return to the vertical direction to the poor translation ytran image registration used in the coarse matching of noise, image movement of objects, such as occurred in a very robust! Platform: |
Size: 135168 |
Author:yol |
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Description: 针对图像配准中常出现的RST(旋转-比例-平移)变换，推导出了相应的盒距离变换公式。与传统的基于广
义仿射变换的Hausdorff盒距离变换公式相比，缩小了搜索距离空间。在计算Voronoi表面时，根据Hausdorff距
离的计算需要提出比较滑动窗口的区域Voronoi表面，节省了计算Voronoi表面的时间。并且在利用边缘点计算
Hausdorff距离时，剔除琐碎的边缘，仅使用较长的边缘计算。试验结果表明，这些改进方法较大地提高了基于
Hausdorff距离的图像配准的计算速度。
-For image registration often appears RST (rotation- the ratio of- translation) transform, derived from the corresponding transformation formula box. With the traditional affine transform based on generalized distance transform of the Hausdorff formula box compared to the distance to narrow the search space. Voronoi surface in the calculation, according to the calculation of Hausdorff distance sliding window need to compare the regional Voronoi surface Voronoi surface is calculated to save time. Edge points and the calculation in the use of Hausdorff distance, remove the edge of trivial, only the edge of a longer calculation. Test results show that the method greatly improved Hausdorff distance-based image registration of the computing speed. Platform: |
Size: 401408 |
Author:媛媛 |
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Description: 基于傅立叶－梅林变换的matlab编写的配准系统，运行fm_gui.m后即出现演示界面，左侧的两个图形框选择待配准的两幅图像，图像可以进行缩放旋转变换。右侧的列表框"Window"下可以选择滤波窗，"Rotation"、"Scale"、"Log-polar"可分别选择旋转、缩放、以及对数极坐标变换所用的插值方法，按键"REGISTER"下的滑动
键可选备选的峰值点总数，点击"REGISTER"按键，
对应的下方图形框即显示配准后的两幅图像，最下方的"Translation"、"Rotation"和"Scale"文本框分别显
示待配准图像间的偏移、旋转、缩放参数。-Based on the Fourier- Mellin transform matlab prepared with System, after having run the demo fm_gui.m interface, the left side of the box to choose the two graphics to be matching the two images, the image can zoom in and out rotation. The list on the right box " Window" under the option of filtering window, " Rotation" , " Scale" , " Log-polar" can choose to rotate, zoom, as well as the number of polar coordinate transform of the interpolation method used, button " REGISTER" sliding under the optional options key points of the total number of peaks, click on " REGISTER" button below the corresponding graphic box that is displayed after the registration of two images, the bottom of the " Translation" , " Rotation" and " Scale" text box Registration to be, respectively, show the offset between images, rotation, scaling parameters. Platform: |
Size: 532480 |
Author:刘子木 |
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Description: 基于SIFT的图像配准程序
SIFT特征匹配算法是目前国内外特征点匹配研究领域的热点与难点,其匹配能力较强,可以处理两幅图像之间发生平移、旋转、仿射变换情况下的匹配问题,甚至在某种程度上对任意角度拍摄的图像也具备较为稳定的特征匹配能力-SIFT-based image registration procedure is the SIFT feature matching algorithm for matching feature points at home and abroad a hot area of research and the difficulties in matching their ability to deal with translation between two images, rotation, affine transformation to match the case of problems, and even to some extent in any angle images will also be able to match the characteristics of a more stable capacity Platform: |
Size: 617472 |
Author: |
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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 |
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Description: 修改后的计算Hu归一化中心距的代码，与matlab程序计算结果一致，并附带测试对比图片，通过对放大前后两张图像的Hu计算，发现结果是一样的，证明了Hu矩在图像尺寸变化时保持不变，旋转、平移情况自己做吧-The revised calculation of Hu normalized center distance of the code results are consistent with the matlab program to calculate and compare with test images, through the larger images before and after the two Hu calculations and found that the result is the same, proof of Hu moments in image size changes remain the same, rotation, translation of their own do it Platform: |
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Author: |
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Description: 在Contourlet变换的基础上发展而来的非下采样Contourlet变换，可以得到图像变换之后的平移不变性。-In Contourlet Transform evolved on the basis of non-sampling Contourlet transform, the image can be transformed after the translation invariance. Platform: |
Size: 271360 |
Author:tanpeipei |
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Description: Perform rotation, translation and scaling on any image using MATLAB. The function has five inputs. These include at the first place the image which is to be rotated, translated and scaled. The second includes the scale factor. Scale factor less than 1 results in compression whereas that more than 1 results expansion. The value in this field cannot be 0.The third includes rotation which can have values like 0,10 30,etc. The fourth is x translation value and the fifth being the y translation value. The output images will be a combination of all the inputs provided. Platform: |
Size: 256000 |
Author:mo |
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Description: 二维傅立叶变换的Matlab实现，是利用图像处理软件对给
出的图像进行傅立叶变换处理。
自行设计一幅图像，验证离散傅立叶变换的性质，如：
频谱图中高频分量迅速衰减，可分离性，平移，周期性与共
轭对称性，旋转、线性和比例性，平均值。(The Matlab implementation of two-dimensional Fu Liye transform is based on image processing software. The image is processed by Fu Liye transform. An image is designed to verify the properties of the discrete Fu Liye transform, such as: The high frequency components in the spectrogram decay rapidly, separability, translation, periodicity and total. Yoke symmetry, rotation, linearity and proportionality, average.) Platform: |
Size: 2048 |
Author:SmaICG |
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Search - translation of image in matlab