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How could we load a local image on a canvas?

由 时间秒杀一切 提交于 2021-01-28 08:01:04
问题 Hello and thank you for your time reading this question: I was trying to do an excercise to learn React, and because of I recently did a code in JS to load a file from local, an image, into a canvas, and then when user clicks on it circles are drawn; I tryed to do the same in React. Here is the JS excercise: https://codereview.stackexchange.com/questions/186526/read-an-image-file-into-a-canvas-and-display-click-coordinates I have created a canvas in Canvas' component's render(), and after

How to import all images from a user specified folder in python using pygame

由 对着背影说爱祢 提交于 2021-01-28 07:55:14
问题 I m new to python, and I'm working on pygame. For my project, i need to import all the images from a user specified folder. Is there any function in pygame to import only the image files from the folder? or guide me to filter only the image files among all files from the imported folder. Sorry, if the question is too basic. 回答1: I don't know about pygame but you with plain python is fairly simple to get all image files within a folder: import imghdr import os for dirpath, dirnames, filenames

How to predict a single image with Keras ImageDataGenerator?

由 ∥☆過路亽．° 提交于 2021-01-28 07:22:15
问题 I have trained the CNN to classify images on 3 class. while training the model i have used ImageDataGenerator class from keras to apply preprocessing function on image and rescale it. Now my network is trained with a good accuracy on test set, but i don't know how to apply preprocessing function on single image prediction. If i use ImageDataGenerator it looks for directory. Suggest me some alternatives to do preprocessing function and rescaling on single image. see my code below TRAINING SET:

Add image to JCheckBoxMenuItem

由 眉间皱痕 提交于 2021-01-28 06:09:50
问题 I have been given an assignment in which i need to a use JCheckBoxMenuItem and add an image to it on the right side I've used the setIcon() method. Created a custom panel and added image to it and then adding the panel to checkbox. Tried to add panel like below. JCheckBoxMenuItem item = new JCheckBoxMenuItem(); item.setText("Option1"); JPanel panel = new JPanel(new FlowLayout(FlowLayout.RIGHT)); JLabel label = new JLabel(new ImageIcon( "C:\\Users\\abcd\\Desktop\\facebook.jpg")); panel.add

Would it be possible to crop image using google app script without using any third party api

由 人盡茶涼 提交于 2021-01-28 06:06:11
问题 I want to crop an image with Google App Script if an image outside the page frame, but as far as I checked in Google App Script documentation and I could not find a way to crop the image. pageElements.asImage().replace (imgBlob, true); it is not allowed to pass cropping dimensions as parameters in .replace() to crop a image. i know this can be achieved using a custom API , passing the image blob and crop area that will call cropping method on another server. But how it will be possible to

display image using php

由 我们两清 提交于 2021-01-28 06:01:30
问题 I have a the following code that i intend to should return a filepath name from mysql in the php section and then display the image in html. But i am only getting up a tiny thumbnail in my browser. By the way "username" and "imagefile" are the only columns in the table "images". I'm sure there is just some silly mistake but i need a fresh pair of eyes to spot it. Thanks a lot in advance. P.S i know i should really me moving over to mysqli but i will simply translate at a later date. Cheers <

The <picture> Element in html5 shows not different images by resize

由 你。 提交于 2021-01-28 05:19:44
问题 I found this code : https://www.w3schools.com/html/tryit.asp?filename=tryhtml_images_picture I have tried it on all my browsers and it's been working properly. But I when I copy the code and I resize my browser, Only img tag is shown. Thanks for any help. <!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width, initial-scale=1.0"> </head> <body> <picture> <source media="(min-width: 650px)" srcset="Blume 1.jpg"> <source media="(min-width: 465px)" srcset="Blume 2.jpg">

Crop image in R

由 江枫思渺然 提交于 2021-01-28 05:10:53
问题 I am trying to crop an image using the magick package in R. My goal is to crop the upper left corner portion of the image. So far my code seems to work for some images but the same dimensions do not work for other images.This is my code: library(magick) library(tidyverse) image_read("http://www.gettyimages.com/gi-resources/images/Plugins/Chrometab.jpg")%>% image_chop("0x185+190")%>%image_crop("50x55+1") I am doing this for several images all of which have the dimensions width 320 height 240.

Flutter pdf generation too slow with image

由 筅森魡賤 提交于 2021-01-28 05:06:20
问题 im working on a pdf generator app in flutter, but when i want to add an image to the pdf, it takes too long also i wanted to know how it is possible to add multiple images. Im using 3 libraries, image picker - pdf - printing here is my code: Future getImage() async { var image = await ImagePicker.pickImage(source: ImageSource.gallery); final tempDir = await getTemporaryDirectory(); final path = tempDir.path; int rand = new Math.Random().nextInt(10000000); imge.Image imagee = imge.decodeImage

Produce the ECB penguin with AES in python

由 时间秒杀一切 提交于 2021-01-28 03:13:50
问题 I want to encrypt data in an image but the resulting ciphertext to still be a valid image. I encrypt the image with AES in python and then, I replace header in the files, but windows can't open the encrypted image. Code def encrypt_file(self, in_filename, out_filename): filesize = os.path.getsize(in_filename) iv = Random.new().read(AES.block_size) cipher = AES.new(self.key, AES.MODE_ECB, iv) chunksize = 64 * 1024 with open(in_filename, 'rb') as infile: with open(out_filename, 'wb') as outfile
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