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c++ Programming Glossary: contourarea

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

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

with the contour orientation if approx.size 4 fabs contourArea Mat approx 1000 isContourConvex Mat approx double maxCosine..

Calculate the area of an object with OpenCV

http://stackoverflow.com/questions/11631533/calculate-the-area-of-an-object-with-opencv

or to get all coordinates of the contour and then use contourArea to calculate the area of my object. I deleted all noise and.. The contour area is calculated by a function nicely called contourArea for unsigned int i 0 i contours.size i cout # of contour points..

OpenCV C++: Sorting contours by their contourArea

http://stackoverflow.com/questions/13495207/opencv-c-sorting-contours-by-their-contourarea

C Sorting contours by their contourArea How can I sort contours by the size of their contour areas.. Point contour1 std vector cv Point contour2 double i fabs contourArea cv Mat contour1 double j fabs contourArea cv Mat contour2 return.. double i fabs contourArea cv Mat contour1 double j fabs contourArea cv Mat contour2 return i j Usage ... find contours std vector..

contour is not equal to contour[i]?

http://stackoverflow.com/questions/14582270/contour-is-not-equal-to-contouri

largest_area 0 for int i 0 i contours.size i double area contourArea contours i if area largest_area largest_area area largest_contours.. and how to resolve it Thanks in advance. EDIT 1 Changed contourArea contours to contourArea contours i . Added declaration for largest_contours.. Thanks in advance. EDIT 1 Changed contourArea contours to contourArea contours i . Added declaration for largest_contours and contours..

Square detection doesn't find squares

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

with the contour orientation if approx.size 4 fabs contourArea Mat approx 1000 isContourConvex Mat approx double maxCosine..

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

cv Mat contours i true 0.02 true if approx.size 4 fabs contourArea cv Mat approx 1000 cv isContourConvex cv Mat approx double.. with the contour orientation if approx.size 4 fabs contourArea Mat approx 1000 isContourConvex Mat approx double maxCosine..