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Scan conversion:
For display of a continuously defined object, a method to map a continuous abstract object or shape into a discrete plane of computer display is needed. This process is called rasterization or scan conversion.
What is the need of homogeneous coordinates? To perform more than one transformation at a time, use homogeneous coordinates or matrixes. They decrease unwanted calculations in
B-spline curves are piecewise smooth polynomial curves. B-spline curves are defined over an interval which has been partitioned into sub-intervals. On each subinterval B-sp
normal vector
Example1: Translate a square ABCD along with the coordinates as: A(0,0),B(5,0),C(5,5),D(0,5) via 2 units in x-direction and 3 units in y-direction. Solution: We can show the
Introduction of Curves and Surfaces This section has covered the methods of generating polygons, closed and curves surfaces. Under those methods we have discussed different ty
What is shearing? The shearing transformation actually slants the object with the X direction or the Y direction as needed.ie; this transformation slants the shape of an obje
Curve segment - properties of bezier curves Note : 1) The joining point on the curve along w.r.t. the parameter based upon second derivates of Q(t) is the acceleration. Wh
Characteristics of vector drawings: Vector drawings are generally pretty small files as they include only data about the Bezier curves which form the drawing. The EPS-file format
What is seed fill? One way to fill a polygon is to begin from a given point (seed) known to be inside the polygon and highlight outward from this point i.e. neighboring pixel
Obtain an MRI image using the Open Source internet resources. i. Read the image into Scilab ii. Plot the image iii. Covert it into grayscale image and plot it iv. Find/
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