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Programming Articles
Page 1831 of 2547
Change Background of Color Image into Grayscale in MATLAB
We can obtain grayscale color by setting RGB values to 128. This means all color channels will have the same intensity values. The following MATLAB program illustrate the code for changing the background of a color image into grayscale. Example %MATLAB program to demonstrate changing color background into grayscale % Read the input colored image img1 = imread('https://www.tutorialspoint.com/assets/questions/media/14304-1687425236.jpg'); % Display the input color image subplot(1, 2, 1); imshow(img1); title('Original Image'); % Create a binary mask of the background BGMask = img1(:, :, 1) == img1(1, 1, 1) & ... ...
Read MoreCheckbox in MATLAB App Building
MATLAB provides an integrated app building toolbox that we can use to create a graphical user interface based app without writing any kind of code. Hence, MATLAB allows users to create professional applications by just drag and drop facility. After that the user can write a MATLAB code to define the behavior of the app options. As mentioned above, this article is primarily meant for creating a user interface in the application which provides a list of options from which a user can select any number of choices. This user interface is referred to as checkbox. A checkbox ...
Read MoreAutomatically Plot Different Color Lines in MATLAB
The different color lines in a plot allows us to plot and distinguish multiple data sets on a same plot area. MATLAB provides various built-in functions to assign different colors to different plot lines automatically. To automatically control the color of plot lines, we can use the following two MATLAB functions: Automatically Plot Different Color Lines using Hold Option In MATLAB programming, we can use the “hold” option to automatically plot different color lines. Syntax hold on; The following MATLAB program explain the use of “hold” function to plot lines of different color. Example % ...
Read MoreCombine two images in MATLAB
MATLAB allows us to combine two images through various methods like image fusion, image join, image concatenate, image overlay, image blending, etc. In this tutorial, we will explore all these techniques of combining two images. Combine Two Image in MATLAB using `imtile()` Function In MATLAB, we can combine two images by using the `imtile()` function. This function allows us to arrange our multiple images in a tiled layout. Syntax To combine two images, the `imtile` function takes the following syntax: img = imtile({img1, img2}, 'GridSize', [1, 2]); Now, let us see the implementation of the ...
Read MoreBalance Contrast Enhancement Technique in MATLAB
In digital image processing, the contrast enhancement is a crucial technique used to improve visual quality of an image. The contrast enhancement technique adjusts the intensities of pixels to increase the range of brightness levels and highlights the differences between bright and dark regions of the image. MATLAB provides various contrast enhancement techniques, but in this article, we will confine our focus to understand the balance contrast enhancement technique, and will see its implementation in MATLAB programming. What is Balance Contrast Enhancement? In MATLAB, the balance contrast enhancement technique is a modern method to improve the contrast ratio ...
Read MoreCalculate Complex Conjugate Transpose in MATLAB
The Complex Conjugate Transpose is a mathematical operation performed on a matrix of complex numbers. It is also known as Hermitian Transpose of Matrix. In this operation, first the transpose of the matrix is taken and after that the conjugate of each element of the matrix. For example, if a there is a complex matrix M, then the complex conjugate transpose of this matrix will be M* that is obtained by taking transpose of M and then replacing each element with its complex conjugate. The complex conjugate of a complex number is simply determined by changing the sign of ...
Read MoreAutomatically Maximize an Image in MATLAB
MATLAB programming allows us to automatically maximize an image for better visibility. For this, we can use the “figure” function with some arguments which described in the following syntax. Syntax figure('units', 'normalized', 'outerposition', [0 0 1 1]); The “figure” command with all these parameters automatically maximizes an image. The following MATLAB program demonstrates the implementation of a code to automatically maximize an image. MATLAB Program Example % MATLAB program for automatically maximize an image % Read the input image img = imread('https://www.tutorialspoint.com/assets/questions/media/ 14304-1687425236.jpg'); % Replace 'your_image.jpg' with the path to your image % Display the original image in ...
Read MoreAuto Cropping Based on Labeling the Connected Components using MATLAB
In digital image processing, the auto cropping based labeling the connected components is a cropping technique in which different regions in an image are determined by using labeled connected component. After that the image is automatically cropped by extracting the surrounding area of each connecting component. The main advantage of the auto-cropping based on labeling the connected components is that it allows to isolate and extract individual regions of interest within an image. Algorithm The step-by-step process to execute the auto-cropping based on labeling the connected components is given below: Step 1 - Process the image if necessary. ...
Read MoreHow to delete an index from a JSON Object ?
While working with JSON objects, Sometimes we need to delete an index or key from the JSON object to remove unwanted data or modify the structure. We can delete the index from a JSON object using methods like the delete operator, filter method, and lodash library. In this article, we will explore these different methods to delete an index from a JSON object. Prerequisites To follow along with the examples provided in this article, you should have a basic understanding of JavaScript and JSON syntax. Additionally, you will need a text editor or an integrated development environment (IDE) to write ...
Read MoreHow to select ID that starts with certain character using jQuery ?
jQuery is a popular JavaScript library that simplifies the process of traversing and manipulating HTML documents. In web development, one common requirement is to select elements with specific attributes or properties. In this article, we will explore how to select HTML elements whose IDs start with a certain character using jQuery. Use of Selecting ID that starts with certain character Targeting Specific Groups of Elements: When working with a large number of elements, it may be necessary to group them based on a common identifier. By selecting IDs that start with a specific character, you can easily target and ...
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