Introduction:  I am reading image data of fingerprints from smart card and as you know this data save as raw image in smart card. I am developing a client side program which only use java script to read image from scanner of a card reader and show th...
When working with bitmap buffers like:  [50, 50, 50, 255, 50, 50, 50, 255, ...] [r,  g,  b,  a,   r,  g,  b,  a, ...]   I often use math like this:  let bufferWidth = width * 4; buffer.forEach((channel, index) => {     let y = Math.floor(index / b...
I need to process pixeldata from a 1000x1000px *.bmp image (~1MiB) in javascript At the moment i am a bit stuck, because the page freezes when i try to dump the data to the console. the important code so far:    var img = new Image(); img.src = '...
If I create a dynamic bitmap on the clientside via javascript, how can I submit this via POST or GET ( and then parse out values from the bitmap on the serverside? NodeJS, PHP etc )  From Making Images Byte-by-Byte in Javascript  var src =  'data...
I just started using EaselJS for a project I'm working on and I'm a bit stuck with the Bitmap Class.. What I do is add a 3000 x 4000 image to the canvas / stage and let the user scale and rotate it. Mainly I'm using the following function...
Let's say I have 20,164 binary digits in a standard JavaScript string, for example:  var data = '101010101010101010101010100110001011010101101' ...   What I want to do is see a visual representation of these digits by converting it to a b...
I don't know how to make this algorithm in JavaScript/Node.js that converts bitmaps into svg paths pixel by pixel:     // input 0 0 0 0 0 0 0 0 0 0  0 0 0 0 0 0 0 0 0 0  0 0 1 1 1 1 1 1 0 0  0 0 1 1 1 1 1 1 0 0  0 1 1 1 0 0 1 1 1 0  0 1 1 1 0 0 1...
I am trying to write a greasemonkey javascript code for specifically my own page. In the page, there is an img with id "barcode".  I can use  var imageattributes = document.getElementById('barcode');   and get the image from the page....
I am trying to implement an efficient collision detection between a line joining two points and a bitmap mask.  Example:    Currently I am using Bresenham's line drawing algorithm to draw each pixel of the line between the two points and comparin...
I'm trying to show an image in my HTML file. The image is loaded by Android and stored in SQLite. How can I pass an image (Bitmap) to HTML via AndroidInterface? and what is the correct way to do that?...

Tags

Recent Questions

Top Questions

Home Tags Terms of Service Privacy Policy DMCA Contact Us

©2020 All rights reserved.