Seven similarity-based image search engines

As we all know, Google and Baidu such a large comprehensive search engine can not identify the content of the picture, only through the alt attribute of the picture, the name of the picture, the text around the picture and so on to guess the content of the picture. However, there are now some image search engines based on similarity, which can search for similar images from the Internet by the color of the image, shape and other characteristics.

Visual similarity technology in general image search engines is mainly based on the following criteria:

color; Color;

theme style; theme;

The material texture.

Next, I will introduce you to seven image search engines based on likeness.