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

Lossy audio formats, Lossy Audio Formats: These are based on sound models ...

Lossy Audio Formats: These are based on sound models which eliminate audio data such humans cannot or can hardly hear, for example: a low volume sound after a large volume sound.

Bresenham line generation algorithm, Bresenham Line Generation Algorithm ...

Bresenham Line Generation Algorithm This algorithm is exact and efficient raster line generation algorithm. Such algorithm scan converts lines utilizing only incremental integ

Jas file formats, JAS: The JAS file formats were implemented to form the s...

JAS: The JAS file formats were implemented to form the smallest possible picture files for 24bits per pixel image and 8 bit per pixel gray scaled pictures. This uses a discrete co

Computer arthcther, How many 128 x 8 RAM chips are needed to provide a memo...

How many 128 x 8 RAM chips are needed to provide a memory capacity of 4096 16 bits?

Composite transformation, program to prove 2 consecutive rotation & scaling...

program to prove 2 consecutive rotation & scaling are additive in nature

What is seed fill, What is seed fill?  One way to fill a polygon is to ...

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

Definitions of hypertext, Definitions of Hypertext A manner of pre...

Definitions of Hypertext A manner of presenting information online along with links among one piece of information and the other. These links are termed as hypertext links

Basic approaches for visible surface determination, Basic Approaches for Vi...

Basic Approaches for Visible Surface Determination There are two basic approaches for visible-surface determination, as per if they deal along with their projected images or a

Can you give some basic features of computer graphics, Can you give some ba...

Can you give some basic features of computer graphics? The methods of computer graphics are the manipulation and creation of graphics (artificial images) by computer.

How does resolution of a system influence graphic display, 1. How does the...

1. How does the resolution of a system influence graphic display? Ans. In a high resolution system the adjacent pixels are so near spaced such approximated line-pixels lie extr

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