transformation

问题 I need to convert incoming phone number strings to a standardized format that does not have any non-numeric characters and strips off the leading number if it is 1. For example: "+1 (222) 333-4444 x 5555" becomes "22233344445555" Thanks in advance for your help! 回答1: I. XSLT 1.0 solution: This transformation : <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <xsl:output method="text"/> <xsl:template match="text()"> <xsl:variable name="vnumsOnly" select=

问题 I'd like to use the new VS2010 web.config transformation feature to change the connection string within the nhibernate configuration in my web.config file. The relevant snippet is something like this: <?xml version="1.0"?> <configuration> <configSections> <section name="hibernate-configuration" type="NHibernate.Cfg.ConfigurationSectionHandler, NHibernate" /> </configSections> <hibernate-configuration xmlns="urn:nhibernate-configuration-2.2"> <session-factory> <property name="connection

问题 It's a simple matter of flipping an image horizontally and/or vertically. The premise is that given a 2D integer array that was created from importing a picture, I must create a method with a int[][] param and horizontally flip it before returning void. The syntax is below: public static void horizontalFlip(int[][] imgArray) { int temp; for (int i = 0; i < imgArray.length; i++) { for (int j = 0; j < imgArray[i].length / 2; j++) { temp = imgArray[i][j]; imgArray[i][j] = imgArray[imgArray

问题 I read through the Transforms documentation in the Quartz 2D Programming Guide. In it there appears to be two ways to make transformations. One way is through modifying the Current Transformation Matrix (CTM). It has methods like the following: CGContextTranslateCTM CGContextRotateCTM CGContextScaleCTM The other way is to use Affine transforms. It has methods like the following: CGAffineTransformTranslate CGAffineTransformRotate CGAffineTransformScale The docs state The affine transform

问题 I would like to robustly estimate a polynomial geometric transform with scikit-image skimage.transform and skimage.measure.ransac The ransack documentation gives a very nice example of how to do exactly that but with a Similarity Transform. Here is how it goes: from skimage.transform import SimilarityTransform from skimage.measure import ransac model, inliers = ransac((src, dst), SimilarityTransform, 2, 10) I need to use skimage.transform.PolynomialTransform instead of SimilarityTransform,

问题 I have two consecutive frames from a video feed and I detect the keypoints using the FAST algorithm for both of them. I match the keypoints using the sum of squared difference's method (SSD). So basically I have matched keypoints between the two frames. Now I want to calculate the affine transformation (scale + rotation + translation ) between the two frames from the set of matched keypoints. I know how to calculate affine transformation from a pair of two points. My question is how can we

问题 I am stumped. Given an xml doc like: <Frag> <DirRef Id="BeemzDir"> <Com Id="BEED24F05AB78FB588F61D4092654B6D" Guid="{A11AB356-2F45-4157-92EF-ED49F5BE0F70}"> <FileName Id="fil1" KeyPath="yes" Source="My.Exe" /> </Com> <Com Id="FFF24F05AB78FB588F61D4092654CCC" Guid="{A11AB356-2F45-4157-92EF-ED49F5BE0F70}"> <FileName Id="fil2" KeyPath="yes" Source="My.Dll" /> </Com> </DirRef> </Frag> <Frag> <ComGroup Id="MyGroup"> <CompRef Id="BEED24F05AB78FB588F61D4092654B6D" /> <CompRef Id=

问题 I need some pointers on the best approach for a rotation task in OpenGL. I know how to rotate objects in 3D space using quaternions, I can translate them, all well and good. But I want to know the best way to treat a collection of different objects as a single entity for the purpose of rotation. For example, suppose you have a desk with objects on it. Each has its own translation and rotation, but now I want to rotate the entire desk and everything on it, while keeping other objects in the

问题 TL;DR: Is there a way how to specify the order in which the Babel plugins are supposed to be run? How does Babel determine this order? Is there any spec how this works apart from diving into Babel sources? I'm developing my own Babel plugin. I noticed, that when I run it, my plugin is run before other es2015 plugins. For example having code such as: const a = () => 1 and visitor such as: visitor: { ArrowFunctionExpression(path) { console.log('ArrowFunction') }, FunctionExpression(path) {

问题 I'm currently trying to implement an alternate method to webcam-based AR using an external tracking system. I have everything in my environment configured save for the extrinsic calibration. I decided to use cv::solvePnP() as it supposedly does pretty much exactly I want, but after two weeks I am pulling my hair out trying to get it to work. A diagram below shows my configuration. c1 is my camera, c2 is the optical tracker I'm using, M is the tracked marker attached to the camera, and ch is