The accepted answer is fine. There is an official help on options available. Also basic Shell commands will do nicely here: for x in 10 100 200 ; do inkscape –export-png logo${x}.png -w ${x} logo.svg ; done On the command line in windows use this line from @avalancha in the comments for %x in (100 … Read more
How to convert .webp images to .png on Linux Tested on Linux Ubuntu 20.04 This question is the top hit for the Google search of “linux convert .webp image to png”. Therefore, for anyone stumbling here and just wanting that simple answer, here it is: # 1. Install the `webp` tool sudo apt update sudo … Read more
The most straightforward way would be to modify the RTF code to insert the picture yourself. In RTF, a picture is defined like this: ‘{‘ \pict (brdr? & shading? & picttype & pictsize & metafileinfo?) data ‘}’ A question mark indicates the control word is optional. “data” is simply the content of the file in … Read more
One way I make a HSV colormap. It’s more easy and accurate to find the color range using this map than before. And maybe I should change use (40, 40,40) ~ (70, 255,255) in HSV to find the green. Another way Convert to the HSV color space, Use cv2.inRange(hsv, hsv_lower, hsv_higher) to get the green … Read more
Not possible with CGAffineTransform. An affine transform can always be decomposed into translations, rotations, shearing and scaling. They all map parallelograms into parallelograms, which your transform does not. For your transform, it can be done in two steps. One to convert the square into a trapezoid. p1—–p2 p1—–p2 | | –> | \ p3—–p4 p3——–p4′ … Read more
It’s not that hard doing that with CSS 1st, please take a look at the Mozilla Specs for mixed units for background-size. 2nd, please consider simply setting background-size: contain; (IE9+, Safari 4.1+, FF 3.0+, Opera 10+) and min/max-width/height for the container element.
If you’d like to use CSS3, you can do it pretty simply using background-size, like so: background-size: 100%; It is supported by all major browsers (including IE9+). If you’d like to get it working in IE8 and before, check out the answers to this question.
This function will convert each color to gray scale and return average of all pixels, so final value will be between 0 (darkest) and 255 (brightest) function getImageLightness(imageSrc,callback) { var img = document.createElement(“img”); img.src = imageSrc; img.style.display = “none”; document.body.appendChild(img); var colorSum = 0; img.onload = function() { // create canvas var canvas = document.createElement(“canvas”); … Read more