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Potrace: a polygon-basedtracing …
http://potrace.sourceforge.net/potrace.pdf
Fast voxel and polygon ray-tracing algorithms in intensity ...
https://pubmed.ncbi.nlm.nih.gov/16752572/
The three algorithms include: An improved point-in-polygon algorithm, incremental voxel ray tracing algorithm, and stereographic projection of beamlets for voxel truncation. The point-in-polygon and incremental voxel ray-tracing algorithms have been used in computer graphics and nuclear medicine applications while the stereographic projection algorithm was developed by …
Potrace: a polygon-based tracing algorithm
https://www.researchgate.net/publication/237244800_Potrace_a_polygon-based_tracing_algorithm
One of the well-known and widely used tools for tracing a raster image is Potrace, a polygon-based tracing algorithm [27]. The algorithm was introduced by Peter Selinger in …
Potrace: a polygon-basedtracing algorithm
https://www.mscs.dal.ca/~selinger/potrace/potrace.pdf
The algorithm is called Potrace, which stands for polygon tracer. However, the output of the algorithm is not a polygon, but a smooth contour made from Bezier curves. The name of the algorithm derives from the fact that it uses polygonsas an intermediate representationof images. The Potrace algorithmis designedto work well on high resolutionimages.
Fast voxel and polygon ray-tracing algorithms in intensity ...
https://www.osti.gov/scitech/biblio/20775206-fast-voxel-polygon-ray-tracing-algorithms-intensity-modulated-radiation-therapy-treatment-planning
U.S. Department of Energy Office of Scientific and Technical Information. Search terms: Advanced search options. ...
Point in polygon - Wikipedia
https://en.wikipedia.org/wiki/Point_in_polygon
This algorithm is sometimes also known as the crossing number algorithm or the even–odd rule algorithm, and was known as early as 1962. The algorithm is based on a simple observation that if a point moves along a ray from infinity to the probe point and if it crosses the boundary of a polygon, possibly several times, then it alternately goes from the outside to inside, then from …
Square Tracing Algorithm - ImageProcessingPlace
https://www.imageprocessingplace.com/downloads_V3/root_downloads/tutorials/contour_tracing_Abeer_George_Ghuneim/square.html
Output: A sequence B (b1, b2 ,..., bk) of boundary pixels i.e. the contour. Begin. Set B to be empty. From bottom to top and left to right scan the cells of T until a black pixel, s, of P is found. Insert s in B. Set the current pixel, p, to be the starting pixel, s. Turn left i.e. visit the left adjacent pixel of p.
1A) Ray tracing versus polygon scan conversion
https://www.cl.cam.ac.uk/teaching/2000/AGraphHCI/AG/p1a.html
Examples of polygon scan conversion algorithms are the painter's algorithm, the z-buffer, and the A-buffer (FvDFH chapter 15 or F&vD chapter 15). In this course we will generally assume that polygon scan conversion (PSC) refers to the z-buffer algorithm or one of its derivatives. The advantage of polygon scan conversion is that it is fast.
Tracing Algorithm - an overview | ScienceDirect Topics
https://www.sciencedirect.com/topics/computer-science/tracing-algorithm
ALGORITHM 5.3. Frontier tracing algorithm in the frontier grid. 1. Let q 0:= (x 0 − 1, y 0 + 1), p 0:= (x 0, y 0 + 1),σ 0:= RIGHT, i:= 0, and k:= 0. 2. Let q k → i q describe a step σ. If the step sequence σ i, σ is not possible at p i, go to Step 4. 3. q is the next grid point on the frontier circuit. Let i:= i + 1, p i:= q, and σ i:= σ.
Path tracing - Wikipedia
https://en.wikipedia.org/wiki/Path_tracing
Path tracing is a computer graphics Monte Carlo method of rendering images of three-dimensional scenes such that the global illumination is faithful to reality. Fundamentally, the algorithm is integrating over all the illuminance arriving to a single point on the surface of an object. This illuminance is then reduced by a surface reflectance function to determine how …
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