Category "contour"

Fitting a contour inside another contour using OpenCV

The idea is to have a rectangular contour, searching for the points of intersection with the triangle one (as shown in the image below) and then move the recta

Contour plots for multivariate gaussian

I'm trying to use a contour plot to visualize a multivariate normal distribution. import numpy as np from scipy.stats import multivariate_normal mean = (0, 0)

are contour data (X,Y) ordered in a connected clockwise path in matplotlib?

As in the title: pl = plt.contour(X,Y,Z,levels=[0]) paths = pl.allsegs I wonder how are the data points in paths ordered. Specifically is it oriented clockwis

Join lines to create closed contours using OpenCV

I have the following image: And I would like to join all of these "green" linear pixels to create a bounding box contour - is this something that is possible w

Drawing zone over plt.imshow

I'm plotting some .tiff images using GDAL and matplotlib. Currently images look like the one in the example and I would like to mark a zone over the image.I hav

Image contour tracing: Jacob's stopping criterion issue

I am trying to adopt Moore-Neighbor contour tracing algorithm in my JavaScript project and at the moment I'm reading this tutorial on contour tracing: http://ww

Error: (-215:Assertion failed) npoints > 0 while working with contours using OpenCV

When I run this code: import cv2 image = cv2.imread('screenshoot10.jpg') cv2.imshow('input image', image) gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY) edg

cv2.findContours function is not working in both versions

I am new to computer vision and haven't really went through any tutorials on thresholding or blurring or other filters. I am using the below two piece of codes

Calculate the non-projected area inside a contour line created by Basemap

I am currently trying to determine the area inside specfic contour lines on a Mollweide map projection using Basemap. Specifically, what I'm looking for is the

Python OpenCV Contour Tree Hierarchy Structure

I am trying to implement the algorithm found here in python with OpenCV. I am trying to implement the part of the algorithm that remove irrelevant edge boundari