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...
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 = '...
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 saw a piece of bitmap code in javascript:  MyProj.Resources.createImage("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFoAAABaCAYAAAA4qEECAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAD8hJREFUeNrsXGtsZVUV3uec++jTd.....uQmCC"),   here...
I already manage to manually create the bitmap of an uploaded image, by manipulating the color channels to obtain an 8 bit image. Now, i'm in the need of converting the bitmap to jpeg but i need to maintain the bit depth (8 bits depth single-chan...
I'm developing a server for a iPhone game in Javascript with socket.io. The servers purpose is to draw a offscreen bitmap with the players path in order to check if that path is already draw. Simply put, all of the drawing will only be shown on t...
I implemented a grid consisting of cells using createjs:  function Cell(identifier,color,gridPositionVector,canvasPositionVector,width) {     this.identifier = identifier;     this.color = color;     this.gridPositionVector = gridPositionVector;...
I have a Bitmap file type Format8bppIndexed. I need to get by JavaScript the value for each pixels (0-255), which corresponds to the index color of the palette. I tried with getImageData, but the returned value is not the color index, but the RGBA va...

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