Why does number of contours differ on picture resolution
Hi all, Quick question on findContours. I ran findContours on a picture with resolution of 640 x 960 and findContours returned more contours. I resized the same picture to 320x480 and it returned...
View ArticleCapture photo with specifications
Hi, I am trying to build a photo capturing app which can click picture in a given specifications. An example will be like below image. The app should automatically click the image if person in front...
View ArticlefindContours contour points order and connectivity
I discovered that the order of the points in contours found by findContours are not in any apparent connected order. However, when I draw them with drawContours, I see the contours drawn with connected...
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View ArticleInformation Regarding Music Downloads You Won't Study In other places
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View ArticleImage Comparison in IOS
Hi, I checked for IOS Samples for Image Comparison but couldn’t find any related links.I am working on a new project,in which i need to compare two images and find out if both images are same.I would...
View ArticleCUDA initialization delay for successive methods
Hello. I'm working on a simple program to evaluate the performance of some cv::cuda methods. I am using Opencv 3.1 on Unbuntu 15 with a GeForce 770. (CUDA 7.5) There's something a I really don't...
View ArticleHi How we can use posix threads in opencv program
Hi , I am new on opencv development . I want open more than 2 video files independently I mean by using posix threads . But when I am doing that my application is crashing , no imshow working . I...
View ArticleAdd trained data to makefile Tesseract-OCR
Hi I have created new Trained data "eng2.traineddata", now i want to add it to config folder. not by this step "sudo cp eng2.traineddata /usr/local/share/tessdata/" want to add in makefile and then...
View Articlewhy may detectMultiScale() give too many points out of the interested object?
I trained my pc with opencv_traincascade all one day long to detect 2€ coins using more than 6000 positive images similar to the following:  Now, I...
View ArticleLineSegmentDetector in java
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View ArticledetectMultiScale speed
Hello,I've recently upgraded to OpenCV 3.0 and found out, that (atleast in my case) the detectMultiScale overload that takes reject_levels and level_weights parameters is twice as fast as the other...
View ArticleError LNK2019: unresolved external symbol
I am using opencv 3.1.0, cuda 6.5 and visual studio 2013 on 64 bit machine. I am getting the following error and I searched for a solution like 3-4 days and I tried every solution that I found. I am...
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