homography

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Calculating homography matrix using arbitrary known geometrical relations

I am using OpenCV for an optical measurement system. I need to carry out a perspective transformation between two images, captured by a digital camera. In the field of view of the camera I placed a se[详细]

2023-04-12 10:59 分类：问答
Affine homography computation

Suppose you have an homography H between two images. The first image is the reference image, where the planar object cover the entire image (and it is parallel to the image). The second image depicts[详细]

2023-04-10 02:55 分类：问答
Quadrilateral Detection & Pose Estimation

How can i estimate the pose of a quadrilateral using OpenCV. I only need to de开发者_如何学Gotect a Rectangle on the frame..not all the quadrilaterals on the screenYes with correspondences between the[详细]

2023-03-29 14:39 分类：问答
Homography computation of a deformed square planar object

suppose you have a square planar object (a piece of paper). You take a photo of it. Generally speaking, it will appear deformed. Suppose you process the image and compute the four corners of the plana[详细]

2023-03-20 04:15 分类：问答
How to augment cube onto a specific position using 3x3 homography

I am able to track 4 coordinates over different images of the same scene by calculating a 3x3 homography between them. Doing this I can overlay other 2D images onto these coordinates. I a开发者_StackO[详细]

2023-02-17 23:49 分类：问答
RANSAC Algorithm

Can anybody please show me how to use RANSAC algorithm to select common feature points开发者_运维问答 in two images which have a certain portion of overlap? The problem came out from feature based ima[详细]

2023-02-03 19:19 分类：问答
Projection matrix + world plane ~> Homography from image plane to world plane

I thi开发者_高级运维nk I have my wires crossed on this, it should be quite easy. I have a projection matrix from world coordinates to image coordinates (4D homogeneous to 3D homgeneous), and therefor[详细]

2022-12-28 11:48 分类：问答
Python newbie - Input strings, return a value to a web page

I\'ve got a program I would like to use to input a password and one or multiple strings from a web page. The program takes the strings and outputs them to a time-datestamped text file, but only if the[详细]

2022-12-17 16:44 分类：问答