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Tag Archives: computer
Quaternions – Use them for Rotation and Transformation
This is the second tutorial on Quaternions. In the previous post, I explained how to use basics of quaternions from the pyquaternion python library. Check the previous post here. In this post, I will show you how to perform spatial … Continue reading
Posted in Linux, Machine Learning, programming, Python, Robotics, ROS, Software, Ubuntu
Tagged beginner, code, computer, easy, example, function, math, mathematics, matplotlib, matrix, numpy, programming, pyplot, pyquaternion, quaternion, rotation, sample, simple, software, source, source code, spatial rotation, spatial transformation, step by step, transformation, tutorial, vector, windows
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Compress files in MATLAB without other file compression software – Method 1, ZIP-UNZIP
You can easily zip a file (or a set of files) in MATLAB without requiring any external compression software being installed on your machine. This is useful to be able to compress files while still in MATLAB. In this post, … Continue reading
Investigating code performance in MATLAB – Part 1: For-loop
Here I want to show you a very simple example in MATLAB. Consider we have a large matrix (can be an image also) and we want to perform element-wise operation on the matrix elements. Let’s first create a large matrix: … Continue reading
Posted in Linux, MATLAB, Optimization, programming, Software, Ubuntu
Tagged beginner, call, code, computer, easy, element, example, fix, for, for-loop, function, image, linux, math, mathematics, Matlab, matrix, mean, mean2, mod, optimization, performance, progemming, script, simple, software, source, source code, step by step, tutorial, ubuntu, windows
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Convert a grayscale image into a black-white image in MATLAB without im2bw
In MATLAB there is a function ‘im2bw’ which converts an input image into a black&white image. You can provide the function with a level of thresholding otherwise the default value is 0.5. Here I show you how to implement the … Continue reading
Posted in Linux, Machine Learning, MATLAB, OpenCV, Optimization, programming, Software, Ubuntu
Tagged beginner, code, computer, convert, easy, function, gray, grayscale, im2bw, im2double, image, image processing, imread, linux, Matlab, octave, programming, rgb2gray, sample, script, simple, software, step, step by step, threshold, tutorial, ubuntu, windows
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Estimating the value of Pi using Python (For educational Purposes)
You can estimate the value of `Pi` up to specific precision with the following method: 1- draw a square and draw the corresponding circle inside it (a quarter of the circle inscribed inside the square). So the edge length of … Continue reading
Posted in Linux, programming, Python, Software, Ubuntu
Tagged beginner, calculate, code, computer, easy, estimate, linux, math, mathematics, monte carlo, numpy, optimization, pi, programming, python, simple, software, source, step by step, tutorial, ubuntu, windows
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Convert Images in MATLAB to different file formats (bmp, gif, hdf, jpg, jpeg, jp2, jpx, pbm, pgm, ppm, pnm, pcx, png, ras, tif, tiff, xwd)
In MATLAB you can easily convert your image from a specific format to another format in the following list: bmp, gif, hdf, jpg, jpeg, jp2, jpx, pbm, pgm, ppm, pnm, pcx, png, ras, tif, tiff, xwd. Although here I mention … Continue reading
Posted in Linux, MATLAB, OpenCV, programming, Software, Ubuntu
Tagged beginner, BMP, code, command line, computer, easy, example, function, gif, hdf, image, jp2, JPEG, jpg, jpx, linux, Matlab, pbm, PCX, pgm, PNG, pnm, ppm, programming, ras, simple, software, step, step by step, tif, tiff, tutorial, windows, xwd
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Simple Object Detection in 3 lines of Code (OpenCV/Python)
The main 3 lines of code is as follows: We read the original image in the first line using the imread function. By passing the 0 flag to this function the output would be a grayscale image. The resulting image … Continue reading
Posted in Linux, Machine Learning, OpenCV, programming, Python, Robotics, Software, Ubuntu
Tagged adaptive, AI, code, computer, cv2, easy, example, filter, gaussain, image, image processing, imread, imshow, linux, Machine Learning, matplotlib, median, numpy, opencv, plot, programming, python, sample, software, source, threshold, tutorial, vision, windows
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Read, write, show images in OpenCV (Python)
In order to load or read an image you can use imread function. In order to display an image you can use imshow function. After you applied some changes to an Image you can write it into the disk. In … Continue reading
Posted in Linux, Machine Learning, OpenCV, programming, Python, Robotics, Software, Ubuntu
Tagged code, computer, cv2, display, image, linux, numpy, opencv, processing, programming, python, read, robot, show, simple, step by step, tutorial, vision, windows, write
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