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问题 I've got this little project where I want to swap an image for another, and display the new image in a lightbox. The code below works as follows; when I click one of the small images, the image src of the large image is replaced with the src of the small image. However, when I click the large image, it still opens the default large image in my lightbox. Is there any way I can make the hyperlink href get swapped the same way the image src is swapped? They need to get the same value. The

问题 I have already looked at how to get sub image by using OpenCV in java api, but this did not help I am curious how to create a sub image of a Mat image that I have loaded in from a file. When I run: crop = img.submat(405, 450, 280, 335); I get : OpenCV Error: Assertion failed (m.dims >= 2) in cv::Mat::Mat, file ..\..\..\..\opencv\modules\core\src\matrix.cpp, line 269 Exception in thread "main" CvException [org.opencv.core.CvException: cv::Exception: ..\..\..\..\opencv\modules\core\src\matrix

问题 So I have these codes that will get me the user information. NOTE : the commented lines are the stuff that I have already tried. Code: public UserInfo GetUserCredentials(string usernameParameter, string passwordParameter) { UserInfo getInfo = new UserInfo(); try { accessToDatabase.OpeningDatabase(); String query = "SELECT * FROM Users where Username=@Username AND Password=@Password"; SqlCommand sqlCmd = accessToDatabase.Command(query); sqlCmd.CommandType = CommandType.Text; sqlCmd.Parameters

问题 I'm trying to align a Text next to an Icon/Image, I want the text or the image to be align vertically but the vertical-align is not being applied, it might have something to do with the floats Here's an image explainng what I want to do: Here's what I have so far: ---- HTML --- <ul class="toolboxItems"> <li> <div class="image"> <img src="someImage.png"> </div> <div class="label"> <label>Lorem ipsum dolor sit amet....</label> </div> <li> <li> /* more of the same .... */ </li> <ul> ---- CSS ---

问题 I need to convert bytes of an image to original image. My byte array which is created by WritableRaster.And Itried to convert to original form ,but it produced image without original colors.My tries are below try { BufferedImage readImage = ImageIO.read(new File("C:\\Users\\Public\\Pictures\\Sample Pictures\\Desert.jpg")); byte imageData[] = get_byte_data(readImage); // Then I need to convert this to original image DataBuffer buffer = new DataBufferByte(imageData, imageData.length);

问题 I am trying to integrate a cropping tool to my website (js plugging resizing cropping images canvas). This tool will let the user crop an image, open it in a new browser page, and give him the capacity to save the new image into the disk. The cropping code is as following: crop = function(){ //Find the part of the image that is inside the crop box var crop_canvas, left = $('.overlay').offset().left - $container.offset().left, top = $('.overlay').offset().top - $container.offset().top, width =

问题 I have already looked at how to get sub image by using OpenCV in java api, but this did not help I am curious how to create a sub image of a Mat image that I have loaded in from a file. When I run: crop = img.submat(405, 450, 280, 335); I get : OpenCV Error: Assertion failed (m.dims >= 2) in cv::Mat::Mat, file ..\..\..\..\opencv\modules\core\src\matrix.cpp, line 269 Exception in thread "main" CvException [org.opencv.core.CvException: cv::Exception: ..\..\..\..\opencv\modules\core\src\matrix

问题 I read the docs: https://github.com/oliver-moran/jimp But could not find how to convert an image from png to jpg. I must have missed something obvious. Using jimp on my server with Node.js. Here's my code: image.scaleToFit(500, 500, Jimp.RESIZE_BICUBIC).quality(60).write("./public/images/uploads/thumb"+req.file.filename, function(err) { 回答1: What is wrong with the example from their documentation? It kind of does what you want - converts png to jpg. var Jimp = require("jimp"); // open a file

问题 I have two images. One has more green color and another one has better quality (it has right color). How can I improve the first one to have the similar color as the second one.I used the contrast enhancement as //Contrast enhancement for (int y = 0; y < rotated.rows; y++) { for (int x = 0; x < rotated.cols; x++) { for (int c = 0; c < 3; c++) { //"* Enter the alpha value [1.0-3.0]: " //"* Enter the beta value [0-100]: "; rotated.at<Vec3b>(y, x)[c] = saturate_cast<uchar>(2.5*(rotated.at<Vec3b>

问题 I am using Apache Commons but it is not enough for me because it is so old technology. So ,i found iCafe and it seems better but I am having the error below. Any idea what i am doing wrong? private static List<IPTCDataSet> createIPTCDataSet() { List<IPTCDataSet> iptcs = new ArrayList<IPTCDataSet>(); iptcs.add(new IPTCDataSet(IPTCApplicationTag.COPYRIGHT_NOTICE, "Copyright 2014-2016, yuwen_66@yahoo.com")); iptcs.add(new IPTCDataSet(IPTCApplicationTag.CATEGORY, "ICAFE")); iptcs.add(new