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watermark_dwt
基于变换域的可逆数字水印系统的设计,是本人的毕业设计,基于整数小波变换的嵌入,加上gui界面,记得自己把自己想用的载体图像放到文件夹中。(Design reversible transform domain watermarking system based on my graduation project is based on integer wavelet transform embedded, plus gui interface, the carrier image into your own folder.)
- 2021-03-18 12:09:20下载
- 积分:1
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src
说明: ORB-SLAM 基本延续了 PTAM 的算法框架,但对框架中的大部分组件都做了改进, 归纳起来主要有 4 点:
ORB-SLAM 选用了 ORB 特征, 基于 ORB 描述量的特征匹配和重定位, 都比 PTAM 具有更好的视角不变性。此外, 新增三维点的特征匹配效率更高, 因此能更及时地扩展场景。扩展场景及时与否决定了后续帧是否能稳定跟踪。ORBSLAM 加入了循环回路的检测和闭合机制, 以消除误差累积。系统采用与重定位相同的方法来检测回路(匹配回路两侧关键帧上的公共点), 通过方位图 (Pose Graph) 优化来闭合回路。PTAM 需要用户指定 2 帧来初始化系统, 2 帧间既要有足够的公共点, 又要有足够的平移量. 平移运动为这些公共点提供视差 (Parallax) , 只有足够的视差才能三角化出精确的三维位置。ORB-SLAM 通过检测视差来自动选择初始化的 2 帧。PTAM 扩展场景时也要求新加入的关键帧提供足够的视差, 导致场景往往难以扩展. ORB-SLAM 采用一种更鲁棒的关键帧和三维点的选择机制——先用宽松的判断条件尽可能及时地加入新的关键帧和三维点, 以保证后续帧的鲁棒跟踪; 再用严格的判断条件删除冗余的关键帧和不稳定的三维点,以保证 BA 的效率和精度。(Orb-slam basically continues the algorithm framework of PTAM, but most of the components in the framework have been improved, which mainly includes four points:)
- 2020-06-11 23:43:54下载
- 积分:1
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source
代码中包含在MATLAB中实现DICOM文件的VOILUT感兴趣区域转换。将DICOM文件的数据重新存储为PNG格式的灰度图像。打开一个文件夹的DICOM文件并将其存储在另一个文件夹中以PNG格式储存。(Included in the MATLAB code to implement DICOM files VOILUT region of interest conversion. The data will be re-stored DICOM files in PNG format, grayscale images. Open a folder and stored in the DICOM files to another folder in PNG format.)
- 2011-11-01 22:41:25下载
- 积分:1
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qtfm_2_0
利用四元数对彩色图像进行各种图像处理的,如滤波、快速傅立叶变化、图像质量评价等。(Use quaternion various images for color image processing, such as filtering, fast Fourier transform, the image quality evaluation.)
- 2013-10-18 09:10:43下载
- 积分:1
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new_metric_matlab_code
基于活动轮廓模型的图像分割算法,具体算法细节,可以见压缩包中的论文(Based on Active Contour Model of image segmentation algorithm, the details of the specific algorithm, you can see the archive of papers)
- 2009-12-23 09:53:50下载
- 积分:1
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sIFT
SIFT算法提取关键点,SIFT算法提取关键点(SIFT algorithm to extract key points, SIFT algorithm to extract key points)
- 2020-08-04 18:58:33下载
- 积分:1
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erjinxiaobo
二进小波多级分解。基于二进小波的图像度尺度分解和边缘检测,效果还行。(into two multi-level wavelet decomposition. Based on Wavelet Image degrees scale decomposition and edge detection, the results were OK.)
- 2007-06-08 21:51:39下载
- 积分:1
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NonLocalMeansFiltering
此算法为基于k-means聚类的非局部均值快速去噪算法,方法便捷有效,可保持边缘信息(this is a fast edge-preserving denoising method based on non-local means method with k-means clustering)
- 2020-12-04 17:19:25下载
- 积分:1
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K-SVD
详细介绍了K-SVD字典训练的详细过程,对稀疏表示研究很有帮助.(Detailed introduces the K- SVD dictionary of detailed training process, the sparse say that research to have the help very much.
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- 2012-10-30 14:11:04下载
- 积分:1
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ART
CT图像重建中经典的代数重建算法,其中还有我算的A矩阵的数据(CT image reconstruction in classical algebraic reconstruction algorithm, which there I counted A data matrix)
- 2020-11-23 15:29:34下载
- 积分:1