resize

Image resizing client-side with JavaScript before upload to the server

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Here’s a gist which does this: https://gist.github.com/dcollien/312bce1270a5f511bf4a (an es6 version, and a .js version which can be included in a script tag) You can use it as follows: <input type=”file” id=”select”> <img id=”preview”> <script> document.getElementById(‘select’).onchange = function(evt) { ImageTools.resize(this.files[0], { width: 320, // maximum width height: 240 // maximum height }, function(blob, didItResize) { // … Read more

Android: How to Programmatically set the size of a Layout

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Java This should work: // Gets linearlayout LinearLayout layout = findViewById(R.id.numberPadLayout); // Gets the layout params that will allow you to resize the layout LayoutParams params = layout.getLayoutParams(); // Changes the height and width to the specified *pixels* params.height = 100; params.width = 100; layout.setLayoutParams(params); If you want to convert dip to pixels, use this: … Read more

WPF: Setting the Width (and Height) as a Percentage Value

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You can put the textboxes inside a grid to do percentage values on the rows or columns of the grid and let the textboxes auto-fill to their parent cells (as they will by default). Example: <Grid> <Grid.ColumnDefinitions> <ColumnDefinition Width=”2*” /> <ColumnDefinition Width=”3*” /> </Grid.ColumnDefinitions> <TextBox Grid.Column=”0″ /> <TextBox Grid.Column=”1″ /> </Grid> This will make #1 … Read more

Numpy Resize/Rescale Image

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Yeah, you can install opencv (this is a library used for image processing, and computer vision), and use the cv2.resize function. And for instance use: import cv2 import numpy as np img = cv2.imread(‘your_image.jpg’) res = cv2.resize(img, dsize=(54, 140), interpolation=cv2.INTER_CUBIC) Here img is thus a numpy array containing the original image, whereas res is a … Read more

How to resize images proportionally / keeping the aspect ratio?

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I think this is a really cool method: /** * Conserve aspect ratio of the original region. Useful when shrinking/enlarging * images to fit into a certain area. * * @param {Number} srcWidth width of source image * @param {Number} srcHeight height of source image * @param {Number} maxWidth maximum available width * @param {Number} … Read more

How to resize an image with OpenCV2.0 and Python2.6

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If you wish to use CV2, you need to use the resize function. For example, this will resize both axes by half: small = cv2.resize(image, (0,0), fx=0.5, fy=0.5) and this will resize the image to have 100 cols (width) and 50 rows (height): resized_image = cv2.resize(image, (100, 50)) Another option is to use scipy module, … Read more

Resize a large bitmap file to scaled output file on Android

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No. I’d love for someone to correct me, but I accepted the load/resize approach you tried as a compromise. Here are the steps for anyone browsing: Calculate the maximum possible inSampleSize that still yields an image larger than your target. Load the image using BitmapFactory.decodeFile(file, options), passing inSampleSize as an option. Resize to the desired … Read more