Is it possible to draw 2D and 3D contour plot like this in python. Sorry I couldn’t provide much detail on the plot in terms of mathematical equations and all. Answer Use plot_surface along with contour to project the contour. It is not limited to the Z plane; you can do this to the X and Y planes as well.
Tag: contour
Problem with 3D contour plots in matplotlib
I created a 3D contour map in Mathematica a while back, and I am trying to do it in Python this time. First let me show you what I obtained: Mathematica: Python: Now, I would like the foreground (the visible part of the hills) to hide the background (the invisible part). In the Python version, it seems as if you
Non overlapping random shapes on 2D plane
Objective: I want to create random non-overlapping irregular rounded shapes (contours) on a 2D plane, similar to a sandstone microstructure as shown below, to perform an oil flooding experiment using computer vision. Approach: I have previously done a similar thing but with circular shapes instead of random shapes. The result is as below. Also, I am aware of the programming
OpenCV transform image shape transformation into a given contour
Does anyone know whether it’s possible to transform image A into image B contour if their shapes are random, using OpenCV or any other python libraries that work with images? Here is what I have so far with 2 images: I’ve been able to find draw contours of the bulb and insert a fox in it using bitwise_and method, but
Matplotlib with variable upper limit
I need to contourplot one huge expression which is: which is not so much relevant here. Usually the task is trivial and can be done this way: That all in common yields which is okay, but I have an issue I cannot handle. The problem is that I need to plot it assuming that my y is not a simple
Plotting a particular set of contour line at desired point or location
I want a contour plot showing contour levels corresponding to a particular set of x,y. I tried increasing the number of contour lines but it doesn’t give the contour line near the required point. I want to get a contour line to suppose around (0.1,0.1) but am not able to do so, I tried increasing the number of contours but
shrink and enlarge contour image with Python OpenCV
I have an image with an object like below: I can detect the contour and get a mask with only ball region, but my ROI is the edge region, that means I need a bigger and a smaller mask which combine to get this: so my question is: how can I shrink/enlarge the mask of contour around contour’s center? Answer
Plot a triangle contour/surface matplotlib python: tricontourf/meshgrid
Given the following image, where plt.Polygon was used to create the triangle and plt.contourf the contour, i would like to ‘cut’ off the regions marked in X so that i only get the contour inside the triangle. How would i do this? I’ve tried placing NaN values in the mentioned regions but the edges are square and therefore requires a
How to improve rectangles from image using opencv?
I’ve an input image like below : ] I did some processing and got lines from my input image as below Lined Image : I want to have output with cell detected like this: Output Image I tried to found cells Bounding box using findContours and connectedComponentsWithStats method but they’re not giving me a satisfying results. My Code: For Contours:
Drawing a contour in a specific region of an image and finding the outermost contour in opencv-python
My code selects a frame from a video which is than subtracted with a background frame selected from the same video. It is then converted to grayscale, blurred, and then an image threshold is applied. Then a contour is drawn which outputs this image. However, I would only like to have the outermost contour and also not have any contours