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c++ Programming Glossary: edgesOpenCV C++/Obj-C: Advanced square detection http://stackoverflow.com/questions/10533233/opencv-c-obj-c-advanced-square-detection GaussianBlur thresh thresh Size 7 7 2.0 2.0 Mat edges Canny thresh edges 66.0 133.0 3 vector Vec2f lines HoughLines.. thresh thresh Size 7 7 2.0 2.0 Mat edges Canny thresh edges 66.0 133.0 3 vector Vec2f lines HoughLines edges lines 1 CV_PI.. thresh edges 66.0 133.0 3 vector Vec2f lines HoughLines edges lines 1 CV_PI 180 50 0 0 cout Detected lines.size lines. endl..
How to find where to cast a ray to avoid collision in Bullet? http://stackoverflow.com/questions/14326654/how-to-find-where-to-cast-a-ray-to-avoid-collision-in-bullet the any angle pathfinding problem. If you can limit the edges of obstacles to a grid then a popular solution is to just use..
How to determine a region of interest and then crop an image using OpenCV http://stackoverflow.com/questions/15693900/how-to-determine-a-region-of-interest-and-then-crop-an-image-using-opencv in all images. So I will need to somehow detect the edges of the square. What are some pre processing methods I can perform..
What is better, adjacency lists or adjacency matrices for graph problems in c++? http://stackoverflow.com/questions/2218322/what-is-better-adjacency-lists-or-adjacency-matrices-for-graph-problems-in-c or absence of a specific edge but slow to iterate over all edges. Adjacency lists use memory in proportion to the number edges.. Adjacency lists use memory in proportion to the number edges which might save a lot of memory if the adjacency matrix is.. adjacency matrix is sparse. It is fast to iterate over all edges but finding the presence or absence specific edge is slightly..
Determine if two rectangles overlap each other? http://stackoverflow.com/questions/306316/determine-if-two-rectangles-overlap-each-other parallel to the x and the y axis that is all of their edges will have slopes of 0 or infinity. I've tried to implement what..
http://stackoverflow.com/questions/5493474/graph-implementation-c its i'th place the Edge List struct Edge representing the edges starting in the i'th node. but when trying to DFS on this graph..
Calculating normals in a triangle mesh http://stackoverflow.com/questions/6656358/calculating-normals-in-a-triangle-mesh face normals by evaluating the cross product of the faces edges. Say you have a triangle with points A B C then these points.. B C then these points have position vectors ‘A ‘B ‘C and the edges have vectors ‘B ‘A and ‘C ‘A so the face normal vector is ‘N f ‘B.. share vertices. And in fact if you have some creases hard edges in your geometry then the faces on either side don't share vertices...
How do you introduce unit testing into a large, legacy (C/C++) codebase? http://stackoverflow.com/questions/748503/how-do-you-introduce-unit-testing-into-a-large-legacy-c-c-codebase code that's absolutely essential. Don't nibble around the edges at junk. Pick a component that's important and somehow can be..
Square detection doesn't find squares http://stackoverflow.com/questions/7731742/square-detection-doesnt-find-squares threshold from slider and set the lower to 0 which forces edges merging Canny gray0 gray 0 thresh 5 dilate canny output to.. 5 j find the maximum cosine of the angle between joint edges double cosine fabs angle approx j 4 approx j 2 approx j 1 ..
Area of rectangle-rectangle intersection http://stackoverflow.com/questions/8011267/area-of-rectangle-rectangle-intersection operation is to choose a counterclockwise ordering of the edges and then evaluate edge segments between critical points intersections.. is to find all intersections and order them on their edges with an appropriate data structure. Choose an intersection if.. of the coordinates of the direction vectors for the edges that meet. If the determinant for the ordered pair of directed..
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