![]() Now onto the first shape on Drawing Simple Geometrical Shapes on Python.ĭoes everyone know what a circle is but only a few care how it originated? Thanks to Euclid and his contribution to modern Mathematics. # lets read our new image that we are going to use for drawing simple shape read_image ( "./cb.jpg", mode = 0 ) cv = ip. readmode = " ) return cimg ip = ImageProcessing () img = ip. Using primary-grade mathematics, I will start drawing simple geometrical shapes on python and compare them with OpenCV’s own methods.Ĭlass ImageProcessing : def _init_ ( self ): self.Writing an Image Processing Class from Scratch on Python.So it will be helpful to view that one also. The method I am including here will be added to the previous Image Processing Class (which is also given below) I have used to do Convolution and Colorspace changes. And the author also introduced the awesome book The Housekeeper and the Professor. Author really has a great way of describing the mathematical terms and I have learned a lot of concepts on Mathematics from there. In fact I am going to use some simple geometrical concepts to draw these basic shapes using only NumPy and Matplotlib.Īlso, I have to mention the awesome book named The Journey of X: A Guided Tour of Mathematics by Steven Strogatz. I am highly inspired by the book named Image Operators: Image Processing in Python by Jason M. Now is the time to start drawing simple geometrical shapes on python like circles, rectangles, ellipses and get the flashback of childhood. Last time I did Convolution operations from Scratch and RGB to GrayScale conversion, etc. Now in this series of tasks, I am going to tackle some of the interesting image processing concepts from scratch using Python and then will compare them with the popular OpenCV framework. So all other quadrilaterals are irregular.Drawing Simple Geometrical Shapes on Python Using NumPy and Visualize Itĭrawing Simple Geometrical Shapes on Python from scratch, have you tried it? The only regular (all sides equal and all angles equal) quadrilateral is a square. and that's it for the special quadrilaterals. one of the diagonals bisects (cuts equally in half) the other.the diagonals, shown as dashed lines above, meet at.The KiteĮach pair is made of two equal-length sides that join up. (the US and UK definitions are swapped over!)Īn Isosceles trapezoid, as shown above, has left and right sides of equal length that join to the base at equal angles. NOTE: Squares, Rectangles and Rhombuses are allĪ trapezoid (called a trapezium in the UK) has a pair of opposite sides parallel.Īnd a trapezium (called a trapezoid in the UK) is a quadrilateral with NO parallel sides: Also opposite anglesĪre equal (angles "A" are the same, and angles "B" The ParallelogramĪ parallelogram has opposite sides parallel and equal in length. In other words they "bisect" (cut in half) each other at right angles.Ī rhombus is sometimes called a rhomb or a diamond. The RhombusĪ rhombus is a four-sided shape where all sides have equal length (marked "s").Īlso opposite sides are parallel and opposite angles are equal.Īnother interesting thing is that the diagonals (dashed lines) meet in the middle at a right angle. The SquareĪ square has equal sides (marked "s") and every angle is a right angle (90°)Ī square also fits the definition of a rectangle (all angles are 90°), and a rhombus (all sides are equal length). The little squares in each corner mean "right angle"Ī rectangle is a four-sided shape where every angle is a right angle (90°).Īlso opposite sides are parallel and of equal length. Let us look at each type in turn: The Rectangle Some types are also included in the definition of other types! For example a square, rhombus and rectangle are also parallelograms. There are special types of quadrilateral: They should add to 360° Types of Quadrilaterals Try drawing a quadrilateral, and measure the angles. interior angles that add to 360 degrees:. ![]() ![]() (Also see this on Interactive Quadrilaterals) Properties ![]()
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