npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2026 – Pkg Stats / Ryan Hefner

aircv4nodejs

v0.1.0

Published

Find object position based on opencv4nodejs for nodejs

Readme

aircv4nodejs

依靠的opencv,查找相似图像的位置信息。

Find object position based on opencv4nodejs for nodejs

Usage

import * as ac from 'aircv4nodejs';
const sourceImg=ac.imread('youimage.png'); // 原始图像
const searchImg=ac.imread('searched.png'); // 待查找的部分

SIFT查找图像

const resultList=ac.findSift(sourceImg,searchImg);
{'point': (203, 245), 'rectangle': [(160, 24), (161, 66), (270, 66), (269, 24)], 'confidence': 0.09}
// result :查找到的点的坐标
// rectangle: 目标图像的矩形四个点的坐标
// confidence 相似度(匹配成功的特征点除以总的特征点)

SIFT多个相同的部分查找

const resultList=ac.findAllSift(sourceImg,searchImg,4,0);

maxcnt 是可选参数,限制最多匹配到的数量

直接匹配查找图像

const resultList=ac.findTemplate(sourceImg,searchImg);

查找多个相同的图片,如在图形

template1

中查找

template2

const resultList=ac.findAllTemplate(sourceImg,searchImg);

效果

2res