sharp | High performance Node.js image processing | Computer Vision library
kandi X-RAY | sharp Summary
kandi X-RAY | sharp Summary
The typical use case for this high speed Node.js module is to convert large images in common formats to smaller, web-friendly JPEG, PNG, WebP, GIF and AVIF images of varying dimensions. Resizing an image is typically 4x-5x faster than using the quickest ImageMagick and GraphicsMagick settings due to its use of libvips. Colour spaces, embedded ICC profiles and alpha transparency channels are all handled correctly. Lanczos resampling ensures quality is not sacrificed for speed. As well as image resizing, operations such as rotation, extraction, compositing and gamma correction are available. Most modern macOS, Windows and Linux systems running Node.js >= 12.13.0 do not require any additional install or runtime dependencies.
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Top functions reviewed by kandi - BETA
- Sets the color of this element .
- Escape the I e .
- abstract common functions
- Functions .
- Copies two elements
- search for two arrays
- Naive EObject .
- read e . e
- send a single event
- Check if e code is a Function .
sharp Key Features
sharp Examples and Code Snippets
rm -rf node_modules/sharp
npm install --arch=x64 --platform=darwin sharp
promises.push(sharpStream.clone().png().pipe(new stream.PassThrough()))
promises.push(sharpStream.clone().jpeg().pipe(new stream.PassThrough()))
const sharp = require('sharp')
const fs = require('fs')
const util =
npm uninstall sharp
npm install --arch=x64 --platform=linux sharp
const sharp = require("sharp");
async function resizeImage(req, res) {
let { width, height } = await sharp("path/to/image").metadata();
let resizedImage;
// you can check here if the image is too big. I will resize it to an width
// image-preprocessor.js
const fs = require("fs");
const path = require("path");
const sharp = require("sharp");
const dirPath = "./src/assets/";
const maxWidth = 2000;
const maxHeight = 2000;
const getAllFiles = function(dirPath, arrayO
// assuming parenthesis an sharp are pattern included:
String s = "(install OS #testname #testversion)";
if (s.matches("\\(install\\sOS\\s#\\S+\\s#\\S+\\)")) {
String[] splitted = s.split("\\s");
String name = s
custom:
bundle:
caching: false
packagerOptions:
scripts:
- rm -rf node_modules/sharp && npm install --arch=x64 --platform=linux --target=10.15.0 sharp
Error: EACCES: permission denied, copyfile '/tmp/1890-libvips-8.8.1-linux-x64.tar.gz' -> '/home/developer/.npm/_libvips/libvips-8.8.1-linux-x64.tar.gz'
fatal error: glib-object.h: No such file or directory
rm -rf node_modules/sharp
npm install --arch=x64 --platform=linux --target=10.15.0 sharp
import sharp from 'sharp';
const imageProcessing = sharp();
imageProcessing
.webp()
.pipe(someWritableStream);
Community Discussions
Trending Discussions on sharp
QUESTION
I'm having some trouble with some code I wrote that appears to work on the desktop, but when copied to my raspberry pi/touchscreen, I get a purely blank screen. Rpi has kivy installed. Kivy demos work just fine on both systems. Is there a chance there is something with import Window on kivy? Any advice would be greatly appreciated!
EDIT 1: I read online of someone else with a similar issue, needed to add (from kivy.lang.builder import Builder) and (Builder.load_file.py). I added this in the python code, which is letting me see most of the original program. Some of Kivy is showing, though for some reason- the graphic menu.png is missing and so is the textbox/grid layout at the bottom of the page (bottom of the kivy code below). This may be due to my positioning, so I will look into this.
Edit 2: This should be resolved- it was implementing Builder to the python code (correct version seen below). I also discovered- the raspberry pi might have an issue with images named 'menu.png'... Just changed the name of the image and everything was visible. No idea on that one. Thanks for the assistance.
Python Code:
...ANSWER
Answered 2022-Mar-23 at 03:26Had the same issue. Solved it by increasing the memory dedicated to the GPU on the Raspberry Pi.
Edit your /boot/config.txt
file (sudo
required)
Scroll down to the [all]
section, and edit the gpu_mem
line as follows:
gpu_mem=256
Then reboot your pi.
QUESTION
I have two objects, from same class type. They both have a property (and its private field). Conditionally, I would like to assign this property/field as a reference to the same property/field of another instance of the same class.
It's important to note that my requirement is to read the referenced field. Write to it would be a bonus, not a problem, and not necessary.
I would like to know if it would be possible to use a ref
field, and do some logic inside the property getter.
Also, I know there has been some questions about this here on StackOverflow (here, here, here, here), but they are all pretty old (so the idea of duplicate does not seem to apply here).
Now we are on C# 10.0, and a lot of different ref
capabilities had been implemented, like ref locals. I tried to use some of them, but I failed. Hope someone with more knowledge could help me to see a way to do it.
So, is it possible, without using a wrapper to link one instance's property to another?? (which is my current approach, detailed below)
More details:
That's my class (actually it's a huge simplification of it):
...ANSWER
Answered 2022-Mar-04 at 14:52I'm not familiar with all of the new features of C# 10.0, but you can achieve the desired behaviour by treating the name as an object in it's own right, and referencing the Name object in each of your Person instances. i.e. just treat it as a composition
QUESTION
I am trying to deploy functions to firebase using my Mac M1, for which it was required to do an npm install
to install packages in node_modules/
.
I am getting this error:
ANSWER
Answered 2021-Aug-17 at 08:37Usually someone having a Mac M1 would have this issue. The Mac M1 processor is arm64
. There was a solution posted here which requires to change terminal architecture to arch -x86_64 zsh
which I did not want to do.
So, that's the workaround I was able to discover (some of the steps also mentioned in the error):
QUESTION
I have upgraded my angular to angular 13. when I run to build SSR it gives me following error.
...ANSWER
Answered 2022-Jan-22 at 05:29I just solve this issue by correcting the RxJS version to 7.4.0
. I hope this can solve others issue as well.
QUESTION
Given an ordered dictionary, I would like to get the key at index 0. I can of course do a loop, get the key of the first iteration and immediately break out of the loop. But I wonder if there is a way to do this directly? My Google-Fu has not turned up anything, and some shots in the dark have failed too. I have tried things like
...ANSWER
Answered 2022-Jan-08 at 16:38Use the .Keys
collection:
QUESTION
After migrating from Remark to MDX, my builds on Netlify are failing.
I get this error when trying to build:
...ANSWER
Answered 2022-Jan-08 at 07:21The problem is that you have Node 17.2.0. locally but in Netlify's environment, you are running a lower version (by default it's not set as 17.2.0). So the local environment is OK, Netlify environment is KO because of this mismatch of Node versions.
When Netlify deploys your site it installs and builds again your site so you should ensure that both environments work under the same conditions. Otherwise, both node_modules
will differ so your application will have different behavior or eventually won't even build because of dependency errors.
You can easily play with the Node version in multiple ways but I'd recommend using the .nvmrc
file. Just run the following command in the root of your project:
QUESTION
Background:
I am building an editor extension for Unity (although this question is not strictly unity related). The user can select a binary operation from a dropdown and the operation is performed on the inputs, as seen in the diagram:
The code is taken from a tutorial, and uses an enum here in combination with a switch statement here to achieve the desired behavior.
This next image demonstrates the relationship between the code and the behavior in the graph UI:
Problem
Based on my prior experience programming in other languages, and my desire to allow for user-extensible operations that don't require users to edit a switch statement in the core code, I would LIKE the resulting code to look something like this (invalid) C# code:
...ANSWER
Answered 2021-Dec-30 at 16:43Usually I'd say your question is quite broad and the use case very tricky and requires a lot of not so trivial steps to approach. But I see you also have put quite an effort in research and your question so I'll try to do the same (little Christmas Present) ;)
In general I think generics is not what you want to use here. Generics always require compile time constant parameters.
As I am only on the phone and don't know I can't give you a full solution right now but I hope I can bring you into the right track.
1. Common Interface or base classI think the simplest thing would rather be a common interface such as e.g.
QUESTION
I'm using a string Encryption/Decryption class similar to the one provided here as a solution.
This worked well for me in .Net 5.
Now I wanted to update my project to .Net 6.
When using .Net 6, the decrypted string does get cut off a certain point depending on the length of the input string.
▶️ To make it easy to debug/reproduce my issue, I created a public repro Repository here.
- The encryption code is on purpose in a Standard 2.0 Project.
- Referencing this project are both a .Net 6 as well as a .Net 5 Console project.
Both are calling the encryption methods with the exact same input of "12345678901234567890"
with the path phrase of "nzv86ri4H2qYHqc&m6rL"
.
.Net 5 output: "12345678901234567890"
.Net 6 output: "1234567890123456"
The difference in length is 4
.
I also looked at the breaking changes for .Net 6, but could not find something which guided me to a solution.
I'm glad for any suggestions regarding my issue, thanks!
Encryption Class
...ANSWER
Answered 2021-Nov-10 at 10:25The reason is this breaking change:
DeflateStream, GZipStream, and CryptoStream diverged from typical Stream.Read and Stream.ReadAsync behavior in two ways:
They didn't complete the read operation until either the buffer passed to the read operation was completely filled or the end of the stream was reached.
And the new behaviour is:
Starting in .NET 6, when Stream.Read or Stream.ReadAsync is called on one of the affected stream types with a buffer of length N, the operation completes when:
At least one byte has been read from the stream, or The underlying stream they wrap returns 0 from a call to its read, indicating no more data is available.
In your case you are affected because of this code in Decrypt
method:
QUESTION
I tried to use init-only properties to force client code to initialize my class when they create it, but without a constructor. It's not working as I planned.
Here's the class, stripped down to illustrate the point.
...ANSWER
Answered 2021-Dec-20 at 22:53init
properties do not force the values to be initialized, only constructors do. What init
does is that, if the property is to be initialized, it must be done at construction time in an object initializer (or in the constructor if you have one): it does not guarantee that it will.
If you want maximum robustness here, initialize them through the constructor instead, which allows you to add guard clauses and guarantee non-nullable properties.
This is what you want (and I do as well):
This proposal adds a way of specifying that a property or field is required to be set during object initialization, forcing the instance creator to provide an initial value for the member in an object initializer at the creation site.
QUESTION
I created an extension method to add all JSON configuration files to the IConfigurationBuilder
ANSWER
Answered 2021-Dec-19 at 09:24The logic of comparing files seems alright, I don't find any outstanding problem with it, it is ok to prepend the "/" to match what you need.
Could be even better if you could use the System.IO.Path.DirectorySeparatorChar
for the directory root path as well, so if you run on windows or Linux you will have no issues.
But there may be a conceptual problem with what you are doing. To my understanding you aim to verify existence of specific configuration files required for your program to work right, if those files are missing than the program should fail. But that kind of failure due to missing configuration files, is an expected and valid result of your code. Yet, you unit-test this as if missing files should fail the test, as if missing files are an indication that something wrong with your code, this is wrong.
Missing files are not indication of your code not working correct and Unit-test should not be used as a validator to make sure the files exist prior executing the program, you will likely agree that unit-test is not part of the actual process and it should only aim to test your code and not preconditions, the test should compare an expected result (mock result of your code) vs. actual result and certainly not meant to become part of the code. That unit test looks like a validator that should be in the code.
So unless those files are produced by your specific code (and not the deployment) there is no sense testing that. In such case you need to create a configuration validator code - and your unit test could test that instead. So it will test that the validator expected result with a mock input you provide. But the thing here is that you would know that you only testing the validation logic and not the actual existence of the files.
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