Detection of Nearly Duplicate Images Online

If you have tons of photos stored on your device, then finding and avoiding image plagiarism/duplication is the only way of maintaining the integrity of the collection. Now there are different techniques with the help of which you can find duplicate images, and, in this traction, we are going to discuss some of them.

The best technique would always depend on the size of your collection and your requirements. Whether the technique is suitable for you depends on whether you want to find near-duplicate images or only duplicate images.

Here we have collected information about the top five techniques that you can use to find duplicate and near-duplicate images online/offline. 

Here are the simplest to the most sophisticated techniques that can be used to detect nearly duplicate images!

Different ways to find nearly duplicate images!

Read about these techniques and try them out.

File Name

This image search technique is only usable if you have the naming scheme of your control images. Usually, this technique is used to find image duplication in local storage or a collection of images on your website. Comparing file names is simple and easy, and you can find duplicate images without any expertise. This technique has many limitations and is not very much accurate, but you can still try it out.

Here we will like you to know that different pictures might or might not have the same name, so if you do not control the naming scheme, you cannot find image duplication.

File Hash

This is one of the modern duplication detection techniques that you can use to find image plagiarism. Still, you must know that this technique is only useful if the files have binary equality. For those of you who are not familiar with the concept of file hash, you must know that this is a fingerprint used to identify the files with binary content. This is an exceptionally reliable technique when it comes to the detection of near-duplicate or completely duplicate content. You can use this technique to compare files one by one or apply them to a complete batch. 

The con of using this technique is that it cannot detect any modifications. 

Perceptual Hash

This is another way using which you can detect image duplication. This technique is known to be best for finding exactly duplicate images and the ones with small changes. The perceptual hash detection technique depends on the pixel data and the binary representations of the image. You can also detect duplication in images having different file formats and file sizes. It is one of the fastest techniques that you can try for the detection of image duplication. If you are interested in finding duplication in only nearly duplicate images, you must try it. 

Image embedding

This is another important technique that can help you in finding exact and near—duplication in images. This image search technique is based on sensitivity detection, and so the results produced by it are quite accurate. An image can easily be duplicated after modification in its format, color saturation, brightness, and gamma features, and it can be difficult for you to find duplication in them. With image embedding, you can easily find out near duplicate images and detect the duplicate versions’ modifications. 

Reverse image search

This search by image technique is a modern one and is known to be the best for finding all sorts of details about an image, including image duplication. You can search by photo using hundreds of online tools, but we suggest you try out the reverse image search utility offered by! The search by image feature of this tool can help you find all sorts of image duplication and plagiarism plus, the use of online search by image tools is better than image search engines because they are more secure to use. This search by image would help you get all kinds of similar images on the web and assist you in finding the websites and pages that are duplicating your content without authorization.

What to do after Finding image duplication?

It does not matter if you use the search by image or any other above listed technique if you are successful in finding image duplication. Now the question is what you should do with the images that are having duplication in them. Here are some practical approaches to solve the problem of image duplication:

  • You can reject the content that has recognizable duplicate content. Rejecting the duplicate images would help you prevent publishing.
  • You can merge both the duplicate images in one file to store the information in one place.
  • You can also delete the duplicate images so that you can reduce the storage space and improve your collection’s credibility!

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