node-opencv | OpenCV Bindings for node.js | Runtime Evironment library

by peterbraden C++ Version: v6.0.0 License: MIT

X-Ray Key Features Code Snippets Community Discussions(4)Vulnerabilities Install Support

kandi X-RAY | node-opencv Summary

node-opencv is a C++ library typically used in Server, Runtime Evironment, Nodejs, OpenCV applications. node-opencv has no bugs, it has a Permissive License and it has medium support. However node-opencv has 1 vulnerabilities. You can download it from GitHub.

OpenCV Bindings for node.js

Support

Quality

Security

License

Reuse

Support

node-opencv has a medium active ecosystem.

It has 4130 star(s) with 832 fork(s). There are 169 watchers for this library.

It had no major release in the last 12 months.

There are 113 open issues and 318 have been closed. On average issues are closed in 484 days. There are 12 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of node-opencv is v6.0.0

Quality

node-opencv has 0 bugs and 0 code smells.

Security

node-opencv has 1 vulnerability issues reported (1 critical, 0 high, 0 medium, 0 low).

node-opencv code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

node-opencv is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

node-opencv releases are available to install and integrate.

Installation instructions, examples and code snippets are available.

It has 498111 lines of code, 0 functions and 52 files.

It has low code complexity. Code complexity directly impacts maintainability of the code.

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node-opencv Key Features

No Key Features are available at this moment for node-opencv.

node-opencv Examples and Code Snippets

No Code Snippets are available at this moment for node-opencv.

Community Discussions

Trending Discussions on node-opencv

Most basic example of adding a OpenCV C++ add-on to node.js

Express.js Cannot find module 'opencv' inside of a docker container

Convert Node Array (variable lenght) to a const float** to call opencv.calcHist

OpenCV: Library not loaded: libjpeg.8.dylib

QUESTION

Most basic example of adding a OpenCV C++ add-on to node.js

Asked 2018-Jul-26 at 21:56

So lately I've been getting into OpenCV with C++. I've built up a few libraries and apps that I would like to export over to Nodejs, but I can't figure it out for the life of me.

I tried to check out how he did it in this repo below, but it was a lot to take in especially since this is my first add-on. https://github.com/peterbraden/node-opencv/blob/master/binding.gyp

I don't mind it being with NAN or N-API, I just am hoping for something simple and easy to see what goes where and why.

Here is a simple OpenCV function that just opens up an image that I am trying to use as an addon with Node:

...

ANSWER

Answered 2018-Jul-26 at 21:56

There are three main files that you will need.

binding.gyp
module.cpp
index.js

binding.gyp

For me The hardest part was figuring out how to include openCV into the project. I don't know if this is correct or not but I looked at the binding.gyp file like a make file in a typical C++ project. With that in mind this is what my binding.gyp file looks like.

Source https://stackoverflow.com/questions/50196514

QUESTION

Express.js Cannot find module 'opencv' inside of a docker container

Asked 2017-Oct-26 at 20:32

I am trying to install the OpenCV bindings for NODE so that I can use AI with my express server. I am using the Peter Braden Library - https://github.com/peterbraden/node-opencv.

However, I keep getting a repeated issue when spinning up the docker container which states:

...

ANSWER

Answered 2017-Oct-26 at 20:32

Looks like you did not even set up node-opencv in your docker image. There is a difference between setting up node-opencv on your local machine and in your docker image. In your Dockerfile you have to include the commands to setup opencv and node-opencv. You can refer to the OpenCV travis.yml if you are unsure how to setup OpenCV in a Linux environment.

Alternatively you can have a look at opencv-express. It is an example of how to use opencv with nodejs and express. It uses opencv4nodejs however. You can also just pull one of the provided base images, depending on the OpenCV version you want to use and install your node environment with node-opencv on top.

Source https://stackoverflow.com/questions/46936656

QUESTION

Convert Node Array (variable lenght) to a const float** to call opencv.calcHist

Asked 2017-Aug-24 at 21:07

Context

I'm working currently on https://github.com/piercus/node-opencv (forked from https://github.com/peterbraden/node-opencv), i'm implementing a binder for calcHist function.

Problem

The C++ function is taking const float** ranges as input (see http://docs.opencv.org/2.4/modules/imgproc/doc/histograms.html#calchist)
I want to set the size of the input considering
I do not know how to conditionnaly set the size of this const float** without breaking the compiler

Workaround

Considering that maximum number of dimensions is 3, i have made a workaround (see full source )

...

ANSWER

Answered 2017-Aug-24 at 21:07

You don't need to copy the contents of histRanges, as the numbers in it are already laid out as float arrays, just like cv::calcHist requires. You only need to create an array of pointers to those arrays.

Source https://stackoverflow.com/questions/45868943

QUESTION

OpenCV: Library not loaded: libjpeg.8.dylib

Asked 2017-Aug-15 at 19:14

This error with OpenCV (I'm trying to use Node + OpenCV - as in node-opencv) has been driving me crazy. I've looked at many answers on StackOverflow or otherwise, and I think this could be a problem with the upgraded Homebrew or maybe with OpenCV. Unless it is a problem with the way I imported OpenCV.

Does anyone understand this/know what to do?

...

ANSWER

Answered 2017-Aug-15 at 19:14

I was getting the same error and reinstalling Open CV fixed it. I ran brew reinstall --build-from-source opencv.

Source https://stackoverflow.com/questions/45599869

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install node-opencv

You'll need OpenCV 2.3.1 or newer installed before installing node-opencv.

Support

I (@peterbraden) don't spend much time maintaining this library, it runs primarily on contributor support. I'm happy to accept most PR's if the tests run green, all new functionality is tested, and there are no objections in the PR. Because I haven't got much time for maintenance, I'd prefer to keep an absolute minimum of dependencies.

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