Andriezel's profile - activity

Dynamic Thresholding Hi, I have a question about Dynamic Thresholding. I know that Halcon software uses dynamic thresho

Yes, I was thinking the same thing. Maybe, because I can find the contour of the star and find the center of that contou

well, i want to know the mean color of the object. This is just 1 color, but I have other images which have a lot of dif

Thanks Berak! I will try to find another way then.

How to calculate standard deviation on image with transparency Hello everyone. How do I calculate the standard deviatio

I think you misunderstood my question. I already found the answer so I close this one.

@Lberger That's the whole thing. I want to get the same results in my OpenCV program..

@Lberger That's the whole thing. I want to the same results in my OpenCV program..

How to calculate StdDev for RGB image? Hello, I'm trying to get the mean and standard deviation on a RGB image. I have

How to calculate StdDev for RGB image? Hello, I'm trying to get the mean and standard deviation on a RGB image. I have

I already figured it out. What I did was delete the if else part and put this code in the ToggleEraser() function: [...

Hi, thanks for the comment. I have INIT_WITH_RECT because I'm using the grabcut function only once. After that it sets m

copyTo() works only the first time Hello. I have a problem with my copyTo() function. I have a mask and I'm editing tha

SEHException when using GrabCut INIT_WITH_MASK Hi everyone! So I am working on a project where I want to use GrabCut an

Hi everyone!

I'm working on a project and I want to select a ROI with my mouse.

Then I want to do the following things:

• Make everything on the outside of the rectangle zero/black.
• Perform some thresholding functions in the ROI.
• Put it back in to the original image.

I don't know how to achieve this. Here's some pseudo code:

for loop to iterate through image{
{
     if(point x and y are not the same as the roi x and y ){
          make the pixel black
      }
 }

..perform some thresholding on ROI..

//copy roi back to image
image.copyTo(result, roi);

Can someone help me out here?

Thanks.

Perform functions on a ROI Hi everyone! I'm working on a project and I want to select a ROI with my mouse. Then I want

Okay so after a while I managed to get it working. What I did was the following: I made cv::Mat image; as global varia

Best way to convert Mat to an Image from C++ to C# I want to know the best way to convert an OpenCV Mat to an Image from

@kbarni I don't get that actually. I checked the Stride in the C++ converted Bitmap object in the C# code and it says: 1

I already have my PixelFormat to 24 bit. I tried 3 * img.cols but that doesnt work. Now I tried saving my Bitmap right a

Hi berak, thanks for the comment. So if my stride is broken; how can I fix that? I thought 4 * image.rows is enough. I a

Hi, thanks for replying but I'm not using any of these openCV wrappers. I'm just using C# as a GUI. Also, I don't use an

How to properly convert Mat to Bitmap C++ Hello, I'm a student and I'm learning OpenCV (C++) and I'm having a weird que