Filippo9669's profile - activity

anyone who could help?

Rho and Theta resolution in Hough Transform Hello, One of the parameters in Hough Transform is the distance (rho) resol

Rho and Theta resolution in Hough Transform Hello, One of the parameters in Hough Transform is the distance (rho) resol

Rho and Theta resolution in Hough Transform Hello, One of the parameters in Hough Transform is the distance (rho) resol

Rho and Theta resolution in Hough Transform Hello, One of the parameters in Hough Transform is the distance (rho) resol

Rho and Theta resolution in Hough Transform Hello, One of the parameters in Hough Transform is the distance (rho) resol

Canny thresholding issues Hi, I have some unclarities about thresholding in Canny's algorithm. Let's take this: This

Canny thresholding issues Hi, I have some unclarities about thresholding in Canny's algorithm. Let's take this: This

Canny thresholding issues Hi, I have some unclarities about thresholding in Canny's algorithm. Let's take this: This i

Based on luminosity, these are extreme differences between adjacent pixels

Thanks. Nevertheless, I have spotted some kind of inaccuracy in computing the gradient via Sobel. In my case, min and ma

Thanks. Nevertheless, I have spotted some kind of inaccuracy in computing the gradient via Sobel. In my case, min and ma

Thanks a lot! I would like to ask you about one more thing - is the gradient magnitude calculated in a way that the high

Hi there, I have a hard time compiling this piece of code:

UMat dx, dy;
Sobel(GREY_IMAGE, dx, GREY_IMAGE.depth(), 1, 0, 3);
Sobel(GREY_IMAGE, dy, GREY_IMAGE.depth(), 0, 1, 3);
resize(dx, dx, Size(dx.rows, dx.rows), 0, 0, CV_INTER_AREA);
resize(dy, dy, Size(dx.rows, dx.rows), 0, 0, CV_INTER_AREA);
UMat mag(dx.size(), dx.type());
magnitude(dx, dy, mag);

Whenever I try it a get a response:

{msg="OpenCV(4.0.0-dev) E:\opencv-master\modules\core\src\mathfuncs.cpp:151: error: (-215:Assertion failed) src1.size() == src2.size() && type == src2.type() && (depth == CV_32F || depth == CV_64F) in funct... ...}

I have no idea what's wrong with the code above. Dimensions are ok, all three matrixes are quadratic. What shall I do?

Calculating a magnitude Hi there, I have a hard time compiling this piece of code: UMat dx, dy; Sobel(GREY_IMAGE, dx,

@supra56 how exactly shall I apply it?

Because loops are far more complicated and it is not really helpful to show what's inside of them.

Capturing a frame in a double while loop Hi! I have a problem with something like this. The case is that if i > a &am

Hough algorithm - thinning lines out Hello. FunctionHoughLines()returns a vector filled with these of lines which get en

f(R,G,B): [R, G, B ] = [(0-255), (0-255), (0-255)] -> [(a,b)] where, for instance f([1, 2, 2]) != f([2, 1, 1]) and s

Injective function of RGB Is it possible to find a function that transforms a three-dimensional vector of values (each f

Changing a histogram (creating a hole) Hi there. This is a histogram of a grayscaled image I have: I need it to be mo

Changing a histogram (creating a hole) Hi there. This is a histogram of a grayscaled image I have: I need it to be mo

LNK2019 cuda::cvtColor and cuda::equalizeHist Hello! I'm trying to use cuda::cvtColor and cuda::equalizeHist but I get e

LNK2019 cuda::cvtColor and cuda::equalizeHist Hello! I'm trying to use cuda::cvtColor and cuda::equalizeHist but I get e

OpenCV with CUDA Hi there. I'm trying to run CUDA libraries with my OpenCV project (need for GpuMat). I've generated a s

I've added all required data.

OpenCV with CUDA Hi there. I'm trying to run CUDA libraries with my OpenCV project (need for GpuMat). I've generated a s

OpenCV with CUDA Hi there. I'm trying to run CUDA libraries with my OpenCV project (need for GpuMat). I've generated a s

Max gradient magnitude in Canny's algorithm Hi there! I'm working on a way to adjust threshold levels in Canny's algorit

Max gradient magnitude in Canny's algorithm Hi there! I'm working on a way to adjust threshold levels in Canny's algorit

Max gradient magnitude in Canny's algorithm Hi there! I'm working on a way to adjust threshold levels in Canny's algorit

Changing threshold in a loop Hello! I've already added two trackbars responsible for changing the lowest and highest pos

Changing threshold in a loop Hello! I've already added two trackbars which are responsible for changing the lowest and h

Changing threshold in a loop Hello! I've already added two trackbars which are responsible for changing the lowest and h

Changing threshold in a loop Hello! I've already added two trackbars which are responsible for changing the lowest and h

Changing threshold in a loop Hello! I've already added two trackbars which are responsible for changing the lowest and h

Changing threshold in a loop Hello! I've already added two trackbars which are responsible for changing the lowest and h

Changing threshold in a loop Hello! I've already added two trackbars which are responsible for changing the lowest and h

Well, I think I've almost helped myself - bluring a canny image seems to be quite a good way of improving the accuracy.

Another issue that has appeared - what if contour is not closed? The function findContours(CANNY_IMAGE, contours, RETR