This question already has answers here:
Swift 5.4 hex to NSColor
(2 answers)
How to convert UIColor to HEX and display in NSLog
(14 answers)
Closed 6 months ago.
I could not find a way to get the hex code value of a Color in SwiftUi, anyone wanna post it here so that people can Google it and find it? And also to help me?
By the way, I am using a color picker, assigning the value to a Color and need to get the hex value.
Another reason this is hard to find is because when Googling it, I only get Hex to Color, not Color to Hex, and I am a very good Googler.
Good day/night, person.
Related
This question already has answers here:
Fortran splats my output to asterisks - why?
(1 answer)
Need help with output of asterisks and indexes using arrays
(2 answers)
Closed 1 year ago.
I am trying to write a 2D matrix with big real numbers to file in the 2D matrix form, matrix looks as shown in the following image, also, the matrix can be download from here (link), I am using the following code, for writing to file,
write(6,*) mat_var_name
do i=1,nrows
write(6, '(*(1000F14.7))')real(mat_var(i,:ncols))
enddo
The above code works fine, when writing matrices with small values, as showing in the following image, but it is not working when writing big real numbers,
Could you suggest a solution to write 2D matrices with big real numbers to an external file,
Edit after #ian-bush and #vladimir-f comments,
Thanks for your support, write(6, '(*(F30.7))')real(mat_var(i,:ncols)) is working, I am getting the desired result as follows,
This question already has an answer here:
How to display resulting image of mainwindow in another window in C++ and QT?
(1 answer)
Closed 3 years ago.
I'm trying to show a disparity map with stereoSGBM from opencv, but when I show the map, 3 images appear, and I can't find how to show only one disparity map. Here an exemple of what appears (I display it whit the QPixmap class):
Here is my code :
cv::Ptr<cv::StereoSGBM> sgbm = cv::StereoSGBM::create(0, 16, 3);
cv::Mat cv_res;
sgbm->setMode(cv::StereoSGBM::MODE_SGBM_3WAY);
sgbm->compute(left, right, cv_res);
I had to convert the image to Indexed8.
Closed. This question needs debugging details. It is not currently accepting answers.
Edit the question to include desired behavior, a specific problem or error, and the shortest code necessary to reproduce the problem. This will help others answer the question.
Closed 3 years ago.
Improve this question
I exported a grayscale image as PGM using MATLAB (and OpenCV) and got this file as an output.
im = imread(src);
im = rgb2gray(im);
imwrite(im, dst);
According to the PGM Specification the header contains the "magic number", the width, the height, and the max value of the image.
But below the header, there should be a matrix of grayscale intensity values written in plaintext. But as you can see in the pasted file, I just get some kind of junk out (although it's a completely valid, viewable image)
I want to be able to read in the PGM files and access the individual intensity values as integers using a C/C++ program but I don't know how to interpret this output since it doesn't follow the spec. Perhaps the text encoding is different?
Thanks for any assistance.
You're misreading the spec.
Each gray value is represented in pure binary by either 1 or 2 bytes. If the Maxval is less than 256, it is 1 byte. Otherwise, it is 2 bytes. The most significant byte is first.
So each pixel is either one or two bytes (depending on the Maxval) and in binary, not ASCII.
I think you're reading the definition of the "plain" format (magic number P2), but you have a "raw" PBM file (magic number P5). You might want to pipe through pnmtopnm -plain to access ASCII-format encoding.
This question already has an answer here:
How to get a binding point of an image variable in OpenGLES
(1 answer)
Closed 7 years ago.
Is there a function to get the currently bound image texture?
I can get the currently bound texture for glBindTexture with glGetIntegerv(GL_TEXTURE_BINDING_2D, &bound_texture);.
Does something similar exist for glBindImageTexture?
ยง 8.26.1 Image Unit Queries
The state required for each image unit is summarized in table 23.45 and may be
queried using the indexed query commands in that table. The initial values of
image unit state are described above for BindImageTexture.
The enum you probably want is GL_IMAGE_BINDING_NAME.
This question already has answers here:
How do I generate an image from a matrix (with floating point entries)
(2 answers)
Closed 8 years ago.
1.I have matrix 180*200 of intensity values.
2.I want image which represent this intensity values.
I don't have MATLAB on this machine (or any of your input) so I can't test. But I think this is what you're looking for
http://www.mathworks.com/help/images/ref/mat2gray.html
(Google is your friend)
The relevant code to you is:
I = mat2gray(A)
where A is the matrix containing your information