Boundary-fill algorithm or flood-fill algorithm , Computer Graphics

Assignment Help:

boundary-fill algorithm or flood-fill algorithm

As you saw the implementation of scan line polygon fill requires that boundaries should be straight line segments.  The seed fill algorithms do not require any such constraints.  You only need to know an interior point of the closed boundary object to fill it.  This interior point is called a seed point.

However, determination of interior point for complex polygons such as the one shown in figure itself is a challenging task.The following methods are used to determine an interior point of the area to be filled. 

1.  Odd-even rule,

2.  Nonzero winding number rule.

Once an interior point of the object is determined, the boundary-fill algorithm or, flood-fill algorithm may be applied to fill the given area.


Related Discussions:- Boundary-fill algorithm or flood-fill algorithm

Objectives of three dimensional transformations, Objectives  of Three dimen...

Objectives  of Three dimensional transformations explain basic 3D transformations-translation, rotation, scaling, shear and reflections-applied to objects in space; ex

Transformation for 3-d shearing, Transformation for 3-D Shearing 2-dim...

Transformation for 3-D Shearing 2-dimensional xy-shearing transformation, as explained in equation, can also be simply extended to 3-dimensional case. All coordinates are tran

Representational animation - computer animation, Representational Animation...

Representational Animation - Computer Animation This method permits an object to change its shape throughout the animation. There are three sub-types to this. The initial is th

Steps of cohen sutherland line clipping algorithm, Cohen Sutherland line cl...

Cohen Sutherland line clipping algorithm The algorithm uses the following main steps Divide the entire plane into nine disjoint regions using the four window boundaries

Line drawing algorithm, Adavantage and disadvantages of DDA and Bresenhams ...

Adavantage and disadvantages of DDA and Bresenhams line drawing algorithm

Non-zero accelerations - computer animation, Non-Zero Accelerations - Compu...

Non-Zero Accelerations - Computer Animation This method of simulating the motion is fairly helpful introducing the realistic displays of speed changes, particularly at the sta

What do you understand by the term branding, Question 1: (a) Explain th...

Question 1: (a) Explain the term ‘Corporate Identity'. (b) Give four examples of what a Corporate Identity comprises of and briefly explain their uses. (c) You are an employe

Overview of hardware primitives, Overview of Hardware Primitives With t...

Overview of Hardware Primitives With the advancement of computer technology, computer graphics has become a practical tool used in real life applications in diverse areas such

Define picture composition, Question 1: (a) The studio provides a perfe...

Question 1: (a) The studio provides a perfect environment for various types of video production where precise control is necessary. Discuss. (b) Studio lighting is an import

Animate 3d articulated character - forward kinematic method, In this progra...

In this programming assignment, you will animate and pose 3D articulated characters by implementing forward and inverse kinematic methods. You should be able to animate character j

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd