"2024 Artificial Intelligence Index Report" - 2.1.1 SynthID, a versatile digital watermarking tool

) included the SynthID model released by Google DeepMind on August 29, 2023. Today, I will supplement some details about it.

Core functions:

  • : SynthID uses embedded watermarking technology that can directly add digital watermarks to AI-generated content. This combined model optimizes the concealment of the watermark by aligning it with the original content, making it harder to detect.

  • : SynthID can scan for digital watermarks in images or audio and help users determine whether the content or its parts were generated using our AI models.

Audio processing:

Implemented through Lyria, which is Google's most advanced AI music generation model to date. In terms of audio, SynthID can add almost imperceptible digital watermarks to AI-generated audio.

To achieve this, SynthID converts audio into a visual spectrogram and adds digital watermarks on this basis.

This method ensures the invisibility of the watermark while maintaining audio quality.

Image processing:

In the field of images, SynthID serves Vertex AI customers who use the Imagen suite. Imagen is the latest generation of text-to-image models capable of creating realistic images based on input text.


SynthID provides invisible digital watermarks for these AI-generated images, aiming to help users identify the AI source of the images.