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问题 I have a working chat application that sends messages to users one on one. See it working here: Live working site I am now trying to add feature that will let connected users select and send images from their local machines. I am able to upload the images on my server using Multer Multer ajax file upload for file upload The file gets uploaded successfully on the server each time a client select and uploads, but I am unable to send/display that saved image from server to the client properly. I

问题 I have a working chat application that sends messages to users one on one. See it working here: Live working site I am now trying to add feature that will let connected users select and send images from their local machines. I am able to upload the images on my server using Multer Multer ajax file upload for file upload The file gets uploaded successfully on the server each time a client select and uploads, but I am unable to send/display that saved image from server to the client properly. I

问题 I've been looking all over for a way to find a specific color in a image (screen capture), and return the the position of of the color (x,y). I've had some tries, but not managed to do a proper search. The result should be the first pixel found with that color. I tought maybe PIL will be to any help. So I tried something like this, problem now is that it returns EVERY position, found with that color: Fixed: def FindColor(r,g,b): image = ImageGrab.grab() for x in range(1, 400): for y in range

问题 in html image and gif are set as same way. so i use same way in thymeleaf In thymeleaf the image set as <img th:attr="src=@{${ball.png}} , title=#{background}, alt=#{background}" style="width: 150px; height: 150px;" /> same as the gif image set as <img th:attr="src=@{${run.gif}} , title=#{background}, alt=#{background}" style="width: 150px; height: 150px;" /> the image will show there but gif image not shows there i don't know why this happening. if you know the answer please share here. 回答1:

问题 in html image and gif are set as same way. so i use same way in thymeleaf In thymeleaf the image set as <img th:attr="src=@{${ball.png}} , title=#{background}, alt=#{background}" style="width: 150px; height: 150px;" /> same as the gif image set as <img th:attr="src=@{${run.gif}} , title=#{background}, alt=#{background}" style="width: 150px; height: 150px;" /> the image will show there but gif image not shows there i don't know why this happening. if you know the answer please share here. 回答1:

问题 I'm using an online store for user images uploaded with our App secured by SSL. The upload works all well as I'm using the WebClient with the certificate attached. But when I'm trying to use the Xamarin.Forms.Image component e.g. with the Source set to "https://blabla.com/upload/image123.jpg" the image can't be loaded on Android. On iOS this works as I've got a custom NSUrlProtocol which handles the SSL connection. var image = new Image(); //will use ImageLoaderSourceHandler image.Source =

问题 So, I have an image from a digital scanner, its resolution is 26 Megapixel. I want to reduce the resolution of the image to 5 Megapixel. Is it possible to reduce the resolution of an image without damaging the contents? If yes, how to reduce it in OpenCV implementation? Any help would be greatly appreciated. Thankyou 回答1: You can use cv2::resize() resize(src, dst, Size(), factor, factor, interpolation); here, interpolation can be selected as cv::INTER_LANCZOS4 to obtain best interpolation

问题 I am developing an image uploader in Django. After the image has been uploaded and saved on disk, I'm trying to resize the saved image while maintaing its aspect ratio. I am using Pillow for image processing/resizing. The problem arises when I try to resize the image, it's getting pixelated even though the resized image's aspect ratio is same as that of the original image. Original Saved Image : https://www.dropbox.com/s/80yk6tnwt3xnoun/babu_980604.jpeg Resized Pixelated Image: https://www

问题 I am using Python 2.7, OpenCV. I have written this code. import cv2 vidcap = cv2.VideoCapture('myvid2.mp4') success,image = vidcap.read() count = 0; print "I am in success" while success: success,image = vidcap.read() resize = cv2.resize(image, (640, 480)) cv2.imwrite("%03d.jpg" % count, resize) if cv2.waitKey(10) == 27: break count += 1 I am working with video and am dividing the video into individual frames, as a .jpg images. I am also at the same time resizing the frames to dimension

问题 I want to display an image from a URL in React. For example, I want this image https://images.pexels.com/photos/20787/pexels-photo.jpg?auto=compress&cs=tinysrgb&h=350 to be displayed in a Card body or reactJS. Is it possible to do it or do I have to download it to assets before I can display it? And how to do it? 回答1: As you do in HTML import React from "react"; import ReactDOM from "react-dom"; function App() { return ( <img src="https://images.pexels.com/photos/20787/pexels-photo.jpg?auto