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c++ Programming Glossary: scalar

Why is `i = ++i + 1` unspecified behavior?

http://stackoverflow.com/questions/1860461/why-is-i-i-1-unspecified-behavior

53 Between the previous and next sequence point a scalar object shall have its stored value modified at most once by.. rule that between the previous and next sequence point a scalar object shall have its stored value modified at most once by..

Unsequenced value computations (a.k.a sequence points)

http://stackoverflow.com/questions/3852768/unsequenced-value-computations-a-k-a-sequence-points

initiation of side effects. 1.9 15 If a side effect on a scalar object is unsequenced relative to either another side effect.. relative to either another side effect on the same scalar object or a value computation using the value of the same scalar.. object or a value computation using the value of the same scalar object the behavior is undefined. Note Value computations and..

Undefined Behavior and Sequence Points

http://stackoverflow.com/questions/4176328/undefined-behavior-and-sequence-points

§5 4 says 1 Between the previous and next sequence point a scalar object shall have its stored value modified at most once by..

What are Aggregates and PODs and how/why are they special?

http://stackoverflow.com/questions/4178175/what-are-aggregates-and-pods-and-how-why-are-they-special

a 1 2 3 is equivalent to int a 3 1 2 3 When an object of scalar type bool int char double pointers etc. is value initialized.. 3 array of non POD class POD classes POD unions scalar types and arrays of such types are collectively called POD types... memcpy obj buf N at this point each subobject of obj of scalar type holds its original value goto statement. As you may know..

Object destruction in C++

http://stackoverflow.com/questions/6403055/object-destruction-in-c

objects are determined by destructors the destruction of a scalar object is always a no op. Specifically destructing a pointer..

Will using `goto` leak variables?

http://stackoverflow.com/questions/7334952/will-using-goto-leak-variables

where it is in scope is ill formed unless the variable has scalar type class type with a trivial default constructor and a trivial..

how to achieve 4 FLOPs per cycle

http://stackoverflow.com/questions/8389648/how-to-achieve-4-flops-per-cycle

Since that is true for packed addpd as well as the scalar addsd versions and sse registers can contain 2 double 's the.. xmm2 addsd xmm9 xmm2 cmp eax ebx jne .L4 Changing the scalar versions with packed versions addpd and mulpd would double the..

Inverse fourier transformation in OpenCV

http://stackoverflow.com/questions/10269456/inverse-fourier-transformation-in-opencv

q2 dst dst Rect 0 0 dst.cols 2 dst.rows 2 exp dst dst dst Scalar all 1 Mat planes 2 polarToCart dst Mat zeros dst.rows dst.cols..

OpenCv 2.3 C - How to isolate object inside image

http://stackoverflow.com/questions/10315551/opencv-2-3-c-how-to-isolate-object-inside-image

imgSrc int min int max int i int minFound 0 CvMat data CvScalar maxVal cvRealScalar imgSrc width 255 CvScalar val cvRealScalar.. max int i int minFound 0 CvMat data CvScalar maxVal cvRealScalar imgSrc width 255 CvScalar val cvRealScalar 0 For each col sum.. CvMat data CvScalar maxVal cvRealScalar imgSrc width 255 CvScalar val cvRealScalar 0 For each col sum if sum width 255 then we..

OpenCV C++/Obj-C: Advanced square detection

http://stackoverflow.com/questions/10533233/opencv-c-obj-c-advanced-square-detection

Intersection is i x i y endl circle occludedSquare i 1 Scalar 0 255 0 3 imshow intersect occludedSquare waitKey return 0..

watershed segmentation opencv xcode

http://stackoverflow.com/questions/11435974/watershed-segmentation-opencv-xcode

Create markers image cv Mat markers binary.size CV_8U cv Scalar 0 markers fg bg Create watershed segmentation object WatershedSegmenter.. Create markers image cv Mat markers binary.size CV_8U cv Scalar 0 markers fg bg imshow markers markers Create watershed segmentation..

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

int i 0 i 4 i cv line img vertices i vertices i 1 4 cv Scalar 0 255 0 1 CV_AA cv imshow Original img cv waitKey 0 Set the..

Delaunay triangulation opencv c++

http://stackoverflow.com/questions/16603780/delaunay-triangulation-opencv-c

display function void draw_subdiv Mat img Subdiv2D subdiv Scalar delaunay_color vector Vec6f triangleList subdiv.getTriangleList.. image imread argv 1 1 ..... .... creat delaunay Scalar delaunay_color 255 255 255 point_color 0 0 255 Rect rect 0 0.. function write void draw_subdiv Mat img Subdiv2D subdiv Scalar delaunay_color bool draw vector Vec6f triangleList subdiv.getTriangleList..

Can't C++ POD type have any constructor?

http://stackoverflow.com/questions/5442717/cant-c-pod-type-have-any-constructor

of these types 3.9.3 are collectively called scalar types. Scalar types POD struct types POD union types clause 9 arrays of such..

Square detection doesn't find squares

http://stackoverflow.com/questions/7731742/square-detection-doesnt-find-squares

i 0 int n int squares i .size polylines image p n 1 true Scalar 0 255 0 3 CV_AA imshow wndname image int main int argc char..

Executing cv::warpPerspective for a fake deskewing on a set of cv::Point

http://stackoverflow.com/questions/7838487/executing-cvwarpperspective-for-a-fake-deskewing-on-a-set-of-cvpoint

Mat draw src.clone polylines draw point n 1 true Scalar 0 255 0 3 CV_AA imwrite draw.jpg draw Assemble a rotated rectangle.. Mat draw src.clone polylines draw point n 1 true Scalar 0 255 0 3 CV_AA imwrite draw.jpg draw Assemble a rotated rectangle..

How to detect the Sun from the space sky in OpenCv?

http://stackoverflow.com/questions/8218997/how-to-detect-the-sun-from-the-space-sky-in-opencv

img maxLoc Point maxLoc.x templ.cols maxLoc.y templ.rows Scalar 0 255 0 2 rectangle result maxLoc Point maxLoc.x templ.cols.. maxLoc Point maxLoc.x templ.cols maxLoc.y templ.rows Scalar 0 255 0 2 imshow img img imshow result result imwrite outputName..

Finding Contours in OpenCV?

http://stackoverflow.com/questions/8449378/finding-contours-in-opencv

the contours cv Mat contourImage image.size CV_8UC3 cv Scalar 0 0 0 cv Scalar colors 3 colors 0 cv Scalar 255 0 0 colors 1.. cv Mat contourImage image.size CV_8UC3 cv Scalar 0 0 0 cv Scalar colors 3 colors 0 cv Scalar 255 0 0 colors 1 cv Scalar 0 255.. CV_8UC3 cv Scalar 0 0 0 cv Scalar colors 3 colors 0 cv Scalar 255 0 0 colors 1 cv Scalar 0 255 0 colors 2 cv Scalar 0 0 255..

OpenCV C++/Obj-C: Detecting a sheet of paper / Square Detection

http://stackoverflow.com/questions/8667818/opencv-c-obj-c-detecting-a-sheet-of-paper-square-detection

i draw contour cv drawContours image squares i cv Scalar 255 0 0 1 8 std vector cv Vec4i 0 cv Point draw bounding rect.. cv Mat squares i cv rectangle image rect.tl rect.br cv Scalar 0 255 0 2 8 0 draw rotated rect cv RotatedRect minRect minAreaRect.. 0 j 4 j cv line image rect_points j rect_points j 1 4 cv Scalar 0 0 255 1 8 blue return image c objective c image processing..