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2018-06-22 22:54:41 -0500 commented answer likely position of Feature Matching.

One small point out is this example is FLANN based and my question is related to Brute Force Matcher with L2 norm :) Tha

2018-06-21 22:11:10 -0500 commented answer perspectiveTransform() fails

It seems this is the problem :(

2018-06-21 22:10:52 -0500 marked best answer perspectiveTransform() fails

I'm trying to retrieve the position of my matched object, I'm using this tutorial https://docs.opencv.org/3.4.1/d7/dff/...

So far my code is https://gist.github.com/Menuka5/de971...

Instead FlannBasedMatcher which is given in the tutorial I use BFMatcher with NORM_L2.

Problem is when I go to perspectiveTransform it gives an error like below.

image description

I have no idea what makes the cv::Exception? Please help

2018-06-19 19:45:29 -0500 edited answer Uninstalling Opencv 4.0.0 to 3.4

I hope you have a folder which you run cmake command to OpenCV? In my case, I created a folder name release to put build

2018-06-19 19:02:39 -0500 edited answer Uninstalling Opencv 4.0.0 to 3.4

I hope you have a folder which you run cmake command to OpenCV? In my case, I created a folder name release to put build

2018-06-19 19:00:15 -0500 received badge  Editor (source)
2018-06-19 19:00:15 -0500 edited answer Uninstalling Opencv 4.0.0 to 3.4

I hope you have a folder which you run cmake command to OpenCV? In my case, I created a folder name release to put build

2018-06-19 18:58:57 -0500 answered a question Uninstalling Opencv 4.0.0 to 3.4

I hope you have a folder which you run cmake command to OpenCV? In my case, I created a folder name release to put build

2018-06-19 06:01:49 -0500 commented question perspectiveTransform() fails

will do. Tomorrow, currently away from the pc

2018-06-19 05:14:49 -0500 asked a question perspectiveTransform() fails

perspectiveTransform() fails I'm trying to retrieve the position of my matched object, I'm using this tutorial https://d

2018-06-19 02:21:48 -0500 received badge  Supporter (source)
2018-06-19 02:19:54 -0500 marked best answer likely position of Feature Matching.

I am using Brute Force Matcher with L2 norm. Referring this link https://docs.opencv.org/2.4/doc/tutor...

After the process, I get below image as output

image description

What is the likely position of the object suggested by the feature matching?

I don't understand how to choose the likely position using this image :(

2018-06-19 02:19:54 -0500 received badge  Scholar (source)
2018-06-19 01:15:09 -0500 asked a question likely position of Feature Matching.

likely position of Feature Matching. I am using Brute Force Matcher with L2 norm. Referring this link https://docs.openc

2018-06-19 01:03:23 -0500 received badge  Enthusiast
2018-06-16 06:29:21 -0500 commented answer OpenCV with QT cv::imread problem.

How is this can be fixed in Ubuntu? I am new to OpenCV :(