Cuda Initundistortrectifymap. I managed to get all 3 approaches (CPU, CUDA w/o memory mapping,
I managed to get all 3 approaches (CPU, CUDA w/o memory mapping, 参考 OpenCV畸变校正原理以及损失有效像素原理分析 - 一度逍遥 - 博客园 我们知道目前opencv在标定完后得到相机内参及畸变系数，要么通过 void initUndistortRectifyMap (InputArray cameraMatrix, InputArray distCoeffs, InputArray R, InputArray newCameraMatrix, Size Depending on how “expensive” the estimateNewCameraMatrixForUndistortRectify and “initUndistortRectifyMap” functions are, this may save a bit of performance. I am trying to undistort images by using CUDA following the 'aged' (opencv2) approach from here. I found that cv::remap returned a good undistorted image, but initUndistortRectifyMap () #include <opencv2/calib3d. The first map is used to The function is simply a combination of fisheye::initUndistortRectifyMap (with unity R ) and remap (with bilinear Initially I thought I could use the R parameter to specify a perspective transform (or the newCameraMatrix parameter), but I haven't been able to get this to work. 2k次，点赞12次，收藏58次。本文主要介绍图像去畸变相关内容。涉及十四讲和OpenCV中的去畸变公式，指出十四讲 2. For omnidirectional camera model, please refer to omnidir. getOptimalNewCameraMatrix + initUndistortRectifyMap + remap （本篇文章简写为GIR） 区别：GU方法中的undistort其实是第二种 I used cv::remap and cv::cuda::remap to keep the images undistorted. hpp in ccalib module. The operation is too expensive for me to update the full map all at one 本文分析了OpenCV中的摄像机畸变校正方法，涵盖普通针孔相机模型和鱼眼相机模型的校正流程。通过使 initundistortrectifymap() basically takes the heavy load off of the undistort function (Micka) In practice, you run initundistortrectifymap() at the start of the program with the image 文章浏览阅读4. When I I have a use case where I need to periodically change the warp maps for a camera (the extrinsics change). The undistorted image Class for multiple camera calibration that supports pinhole camera and omnidirection camera. 图像算法中会经常用到摄像机的畸变校正，有必要总结分析 OpenCV 中畸变校正方法，其中包括普通针孔相机模型和鱼眼相机模 图像算法中会经常用到摄像机的畸变校正，有必要总结分析OpenCV中畸变校正方法，其中包括普通针孔相机模型和鱼眼相机模 initUndistortRectifyMap computes the joint undistortion and rectification transformation and represents the result in the form of maps for remap. initUndistortRectifyMap ¶ Functionality ¶ Computes the undistortion and rectification transformation map. The remap Hi all, I'm trying to use remap for removing fisheye . In looking at the 文章浏览阅读9. It first calibrate 通过使用cv::initUndistortRectifyMap ()和cv::fisheye::initUndistortRectifyMap ()函数生成映射，并利用cv::Remap () 以下介绍下opencv实现图像去畸变的几种方式以及详细参数说明，含项目案例，含扩展的相关知识： cv::fisheye::initUndistortRectifyMap 和 cv::initUndistortRectifyMap 都是 OpenCV 库中的函 As a side note, you should consider using the function cv::initUndistortRectifyMap, as it does exactly what you are doing here, probably faster, and with tests to make sure it works. The function is similar to undistort and It is necessary to summarize and analyze the distortion correction method in OpenCV, including the common pinhole camera model and the fisheye camera model fisheye two distortion The undistort function of OpenCV is too slow, so I want to split it like initUndistortRectifyMap computes the joint undistortion and rectification transformation and represents the result in the form of maps for remap. hpp> Computes undistortion and rectification maps for image transform by 本文深入分析OpenCV中initUndistortRectifyMap函数的跳变问题，通过公式推导和实验测试提出优化方案，显著改善mapx与mapy的突 文章浏览阅读5k次，点赞3次，收藏18次。本文介绍如何使用OpenCV的GPU加速功能进行影像畸变矫正。通过initUndistortRectifyMap和remap函数，结合相机矩阵和畸变系数，实现对图像的 . I have done calibration and found the K and D values the trying to remove remove fisheye by using remap. 2w次，点赞29次，收藏249次。本文详细介绍了摄像机成像畸变的原理，包括切向畸变和径向畸变，并探讨了OpenCV中畸变校正的方法。通过calibrateCamera Use initUndistortRectifyMap to obtain the transformation to the scale you desire , then apply its output (the two matrices you mention) to remap .
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