points

I am having some troubles trying to connect separate points in my picture (see below). Right now, the code I have is as follows: first_time = resulting_coords[0:40] for i in range(len(first_time)): if(i < (len(first_time))-1): cv2.line(copy_test_image[0], (resulting_coords[i,0],resulting_coords[i,1]), (resulting_coords[i+1,0],resulting_coords[i+1,1]), (0,0,225), 2) elif(i>=(len(first_time))-1): # print(i) cv2.line(copy_test_image[0], (resulting_coords[i,0],resulting_coords[i,1]), (resulting_coords[0,0],resulting_coords[0,1]), (0,0,225), 2) Which actually gives the result I want: Results in But

I have a list of Vector3 points in c#, and I need to calculate the concave contour of these. There's really a lot of references around, especially for -convex- resolution (which I have successfully implemented already, thanks to graham's algorithm), however, since my need is now to effectively compute a concave contour, I'm lost: wikipedia does list a lot of resources for convex calculation, but none for -concave-. Anybody with math knowledge that can give me a lead on the available concave hull algorithms? I have a concern for performance, too, so being able to benchmark the algorithm speed a

I am using this FLANN matcher algorithm to match interest points in 2 pictures the code is displayed below). There is a moment when the code finds a list of matched points: std::vector<DMatch> good_matches; I would like to get the points localization (x,y) in both pictures. To create a displacement map. How could I access these points localization? Cheers, #include <stdio.h> #include <iostream> #include "opencv2/core/core.hpp" #include "opencv2/nonfree/features2d.hpp" #include "opencv2/highgui/highgui.hpp" using namespace cv; void readme(); /** @function main */ int main(int argc, char** argv)

Is there a way to add bullet points to an HTML textarea? I want to add a simple feature where a bullet point is added for every line in a text area (similar to a list bullet points). You can't do that but there is another way. delete the textarea. '<section id="textarea" contenteditable="true"> <ul> <li>List item here</li> <li>List item here</li> <li>List item here</li> <li>List item here</li> </ul> </section>' As far as I know, you can't. But, you can get WYSIWYG editor where you can use bullets lists, and more (like images, bold, italic, etc .). Those WYSIWYG editor are fully customizable,

I have raster maps which are generated using the raster package in R. These raster layers can be visualized using the rasterVis package's levelplot function: levelplot(rasterstack, layout=c(1, 2), col.regions=colorRampPalette(c('darkred', 'red3', 'orange2', 'orange', 'yellow', 'lightskyblue', 'steelblue3', 'royalblue3', 'darkblue'))) Now, I would like to add some z values defined by xy cordinates to the levelplot map. The dataframe containing z values has 4 columns. Columns 1 & 2 contain x & y coordinates, column 3 contains z values for map 1 in layout(1, 1) and column 4 for layout(1, 2). The