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Boundary tracing - Wikipedia
https://en.wikipedia.org/wiki/Boundary_Tracing
6. Border Tracing Algorithm
http://users.utcluj.ro/~rdanescu/PI-L6e.pdf
Border Tracing Algorithm. The border tracing algorithm is used to extract the contours of the objects (regions) from an image. When applying this algorithm it is assumed that the image with regions is either binary or those regions have been previously labeled. Algorithm’s steps: 1.
algorithm to trace border in 2D array - Stack Overflow
https://stackoverflow.com/questions/8874873/algorithm-to-trace-border-in-2d-array
take color C of point (x,y) which will be the color to trace. run x+=dx,y+=dy until at (x+dx,y+dy) you have another color and are on a boundary. peek at (x+dx,y+dy), if it is not the same color C, you are hitting a boundary: turn left and goto 4. x+=dx, y+=dy, i.e. take a step. record (x,y) as part of the boundary.
Border-tracing algorithm implementation for the femoral …
https://www.ncbi.nlm.nih.gov/pubmed/11339979
In this research, an automatic procedure (border-tracing method) for the extraction of bone contours was implemented and validated. A composite replica of the human femur was scanned and the CT images processed using three different methods, a manual procedure; the border-tracing algorithm; and a threshold-based method.
Linear-time border-tracing algorithms for quadtrees
https://link.springer.com/article/10.1007/BF01758835
In applications where the quadtree is used as an underlying object representation, a number of basic operations are implemented as a trace along the border of the object's region. A technique is presented that determines a way to shift any given scene (as well as its quadtree), so that the border of all the objects in the scene can be traversed in time proportional to the length of all …
contour tracing algorithms | TheAILearner
https://theailearner.com/tag/contour-tracing-algorithms/
Contour Tracing Square Tracing algorithm Moore Boundary Tracing algorithm Radial Sweep Theo Pavlidis’ algorithm Dr. Kovalevsky algorithm Suzuki’s Algorithm (OpenCV) Fast contour tracing algorithm
Suzuki’s Contour tracing algorithm OpenCV-Python
https://theailearner.com/2019/11/19/suzukis-contour-tracing-algorithm-opencv-python/
Step-1 If it’s an outer border (i.e. f ij = 1 and f i,j-1 = 0) then increment the NBD and set (i2, j2) as (i, j-1). Else if it is a hole border, increment NBD. Set (i2, j2) as (i, j+1) and LNBD = f ij in case f ij > 1. Otherwise, go to step 3.
4-Border and 4-Boundary - University of Auckland
http://www.mi.auckland.ac.nz/DATA/CCV/books/KR/pdf-LectureNotes/10slides.pdf
Algorithms for Picture AnalysisLecture 10: Borders, Boundaries, and Cycles. 4-Border and 4-Boundary. set S = black and white pixels; set M ⊆ S = black pixels invalid edges = all edges between M and M = S \ M p ∈ M 4-inner pixel iff A. 4(p) ⊆ M (shown in gray) p ∈ M 4-border pixel iff p not a 4-inner pixel (shown in black) p ∈ M 4-coborder pixel iff A.
Contour Tracing - ImageProcessingPlace
https://www.imageprocessingplace.com/downloads_V3/root_downloads/tutorials/contour_tracing_Abeer_George_Ghuneim/alg.html
Contour Tracing Algorithms. What follows are four of the most common contour tracing algorithms. The first two, namely: the Square Tracing algorithm and Moore-Neighbor Tracing are easy to implement and are therefore used frequently to trace the contour of a given pattern. Unfortunately, both of these algorithms have a number of weaknesses which ...
Plotting algorithms for the Mandelbrot set - Wikipedia
https://en.wikipedia.org/wiki/Plotting_algorithms_for_the_Mandelbrot_set
Border tracing works by following the lemniscates of the various iteration levels (colored bands) all around the set, and then filling the entire band at once. This can be a good speed increase, because it means that large numbers of points can be skipped. [12]
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