jQuery、PHP与API等实现脸部辨识功能
导读:脸部辨识是通过图像算法来判断人脸位置和大小的计算机技术。它指认面部特征,忽略其他图像噪音,譬如建筑物,树木和身体。现在大多数社交网络平台的相册都有这个功能,在你上载了一张照片后,它自动跑算法,在照片上标识出你的朋友。此文向你介绍用不同的插件和库来实现这个功能。
jQuery 脸部辨识
jQuery 的插件在照片上标识脸部并给出他们的坐标和大小。这个插件是由六六(音译:Liuliu)结合 HTML5 canvas 开发的,所以只能在支持 HTML5 的客户端跑。有兴趣的话可以参见这个样例(见下图,不过要翻墙),整套算法代码可以在 git hub 下载。
PHP 脸部辨识扩展
提供了用 PHP 实现的 OpenCV (Open Source Computer Vision) 。它包含两个函数 face_count () 和 face_detect (). 第一个给了在一张图像上所标识的面部数量。第二个给了一个他们的坐标数列和总数量。你可以在 XARG’s page.找到安装程序和使用手册,还有 Demo。
脸部辨识 API
这个 API 是由一个罗马尼亚人开发。这个使用还是很方便的。你的程序发给它 API 认证和要分析的图像 URL,它返给你一个 XML 数据包含在图像上发现的所有脸部数据。这个包特别方便,是因为它可以直接分析 URL 而不是图像数据,所以你可以直接在服务器上抓链接然后进行分析。
Ruby
这个是跟使用 OpenCV 的 Ruby 包,和 PHP 的那段程序很像。你们可以在 Ruby 页面下载程序。
OpenCVDotNet
这个是为.NET framework 开发的程序管理,通过他可以直接从 C# 里面叫 OpenCV 的函数。 它包括一个 DLL (C++写的) 把 OpenCV 包在 .NET 的类里面,这样 VB.NET, C++ 和 C# 都可以用。

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PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

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PHP is suitable for web development and content management systems, and Python is suitable for data science, machine learning and automation scripts. 1.PHP performs well in building fast and scalable websites and applications and is commonly used in CMS such as WordPress. 2. Python has performed outstandingly in the fields of data science and machine learning, with rich libraries such as NumPy and TensorFlow.

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PHP is a server-side scripting language used for dynamic web development and server-side applications. 1.PHP is an interpreted language that does not require compilation and is suitable for rapid development. 2. PHP code is embedded in HTML, making it easy to develop web pages. 3. PHP processes server-side logic, generates HTML output, and supports user interaction and data processing. 4. PHP can interact with the database, process form submission, and execute server-side tasks.
