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python Programming Glossary: contourHow to remove convexity defects in a Sudoku square? http://stackoverflow.com/questions/10196198/how-to-remove-convexity-defects-in-a-sudoku-square OpenCV 2.3.1. Below is what I did Read the image Find the contours Select the one with maximum area and also somewhat equivalent.. gives the result below The red line drawn is the original contour which is the true outline of sudoku boundary. The green line.. of sudoku boundary. The green line drawn is approximated contour which will be the outline of warped image. Which of course there..
How can I attach a pyplot function to a figure instance? http://stackoverflow.com/questions/14254379/how-can-i-attach-a-pyplot-function-to-a-figure-instance 0.5 1 1 Z 10.0 Z2 Z1 from matplotlib.pyplot import figure contour fig1 figure figsize 4 4 facecolor 'white' contour X Y Z response.. figure contour fig1 figure figsize 4 4 facecolor 'white' contour X Y Z response HttpResponse content_type 'image png' fig1.savefig.. response format 'png' fig1.clear return response The contour pyplot function in the example above can get rendered in fig1..
Is it possible to plot implicit equations using Matplotlib? http://stackoverflow.com/questions/2484527/is-it-possible-to-plot-implicit-equations-using-matplotlib the equation G is the other F Y X G X Y matplotlib.pyplot.contour X Y F G 0 matplotlib.pyplot.show See the API docs for contour.. X Y F G 0 matplotlib.pyplot.show See the API docs for contour if the fourth argument is a sequence then it specifies which.. the fourth argument is a sequence then it specifies which contour lines to plot. But the plot will only be as good as the resolution..
How do I track motion using OpenCV in Python? http://stackoverflow.com/questions/3374828/how-do-i-track-motion-using-opencv-in-python grey_image None 10 storage cv.CreateMemStorage 0 contour cv.FindContours grey_image storage cv.CV_RETR_CCOMP cv.CV_CHAIN_APPROX_SIMPLE.. cv.CV_RETR_CCOMP cv.CV_CHAIN_APPROX_SIMPLE points while contour bound_rect cv.BoundingRect list contour contour contour.h_next.. points while contour bound_rect cv.BoundingRect list contour contour contour.h_next pt1 bound_rect 0 bound_rect 1 pt2..
matplotlib - extracting data from contour lines http://stackoverflow.com/questions/5666056/matplotlib-extracting-data-from-contour-lines extracting data from contour lines I would like to get data from a single contour of evenly.. from contour lines I would like to get data from a single contour of evenly spaced 2D data an image like data . Based on the example.. can I get the x y values of the line that is ploted by a contour plot matplotlib import matplotlib.pyplot as plt x 1 2 3 4 y..
Python : 2d contour plot from 3 lists : x, y and rho? http://stackoverflow.com/questions/9008370/python-2d-contour-plot-from-3-lists-x-y-and-rho 2d contour plot from 3 lists x y and rho I have a simple problem in python.. and 1. but they are not in a specific order. How to make a contour plot like with imshow of the density rho interpolated at the.. between 10 000 and 1 000 000 elements python matplotlib contour share improve this question You need to interpolate your..
Simple Digit Recognition OCR in OpenCV-Python http://stackoverflow.com/questions/9413216/simple-digit-recognition-ocr-in-opencv-python a It loads the image. b Selects the digits obviously by contour finding and applying constraints on area and height of letters.. ################# Now finding Contours ################### contours hierarchy cv2.findContours thresh cv2.RETR_LIST cv2.CHAIN_APPROX_SIMPLE.. 0 100 responses keys i for i in range 48 58 for cnt in contours if cv2.contourArea cnt 50 x y w h cv2.boundingRect cnt if h..
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