What are the various area filling techniques?
Filled Area Primitives: Region filling is the process of filling image or region. Filling can be of boundary or interior region as shown in fig. Boundary Fill algorithms are used to fill the boundary and flood-fill algorithm are used to fill the interior.
What are the filled area algorithm in computer graphics?
The Scan-Line Algorithm is an area filling algorithm. In this algorithm, we can fill the polygons through horizontal lines or scan lines. The scan-line intersects the edges of the polygon, and the polygon is filled between pairs of the intersection.
What is fill area?
fill area primitive A computer-graphics output primitive that specifies a closed curve to be filled with a solid color, a hatching, or a pattern.
What are flood fill techniques?
Flood fill is an algorithm mainly used to determine a bounded area connected to a given node in a multi-dimensional array. It is a close resemblance to the bucket tool in paint programs. The most approached implementation of the algorithm is a stack-based recursive function, and that’s what we’re gonna talk about next.
What methods are used to fill polygons?
Another approach to fill the polygon is to apply the inside test i.e. to check whether the pixels is inside the polygon or outside the polygon and then highlight pixels which lie inside the polygon. This approach is known as scan-line algorithm It avoids the need for seed pixel it requires some computation.
What is seed filling?
Flood fill, also called seed fill, is an algorithm that determines and alters the area connected to a given node in a multi-dimensional array with some matching attribute.
What is Seed Point?
Seed points are grid points selected to agglomerate the surrounding control volumes. The list of seed points can contain either those points which form an approximate maximal independent set [81], or simply all points of the current grid level.
What are the two approaches used in seed filling algorithm?
2. Boundary Fill Algorithm This algorithm picks a point inside the polygon and starts to fill until it hits the boundary of the object. Assumption: In this algorithm, we assume that color of the boundary is same for the entire object.
What is scanline algorithm in computer graphics?
Scanline rendering (also scan line rendering and scan-line rendering) is an algorithm for visible surface determination, in 3D computer graphics, that works on a row-by-row basis rather than a polygon-by-polygon or pixel-by-pixel basis.
Which of these is a characteristic of midpoint circle algorithm?
which of these is a characteristic of midpoint circle algorithm? Produces pixel points for an semicircle.
Which of the following is line drawing algorithm?
There are following algorithms used for drawing a line: DDA (Digital Differential Analyzer) Line Drawing Algorithm. Bresenham’s Line Drawing Algorithm. Mid-Point Line Drawing Algorithm.
Which algorithm is a faster method for calculating pixel positions *?
DDA