Product Introduction
The Blind Watermark feature is a new watermarking mode provided by Tencent Cloud's Cloud Infinite. Through this feature, you can add watermark images invisibly to the original image data without significantly affecting its quality. Additionally, after an image is stolen, you can extract blind watermarks from suspected stolen resources to verify image ownership.
Cloud Infinite supports text-based blind watermark and image-based blind watermark, which are categorized into the following types:
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text-based blind watermark (type3) | Low impact on image quality, strong resistance to attacks, and easy to extract. | |
image full blind watermark (type2) | Low impact on image quality, and requires the watermark image for extraction. | Batch add, batch verify. |
image semi-blind watermark (type1) | Strong resistance to attacks, and requires the original image for watermark extraction. | Small images (below 640px x 640px) intended for use. |
Note:
Blind Watermark is a paid service. For specific fees, refer to Image Processing fees. Cloud Infinite will issue a free resource pack with 6000 uses and a 2-month validity period after the account's first usage of this service. Usage beyond this limit or after the resource pack expires will be billed at standard rates. When using the Blind Watermark service, please first confirm the relevant limitations and Region. For details, see Usage Limitations.
Feature Experience
Applicable Scenarios
Authentication Accountability
You can add a blind watermark to image resources. After discovering that malicious attackers have stolen your resources, retrieve the suspected stolen images and perform blind watermark extraction with the corresponding original images. If a valid watermark image can be obtained, it can prove resource ownership.
Upload Duplicate Check
To address the issue of users re-uploading identical resources from other users (e.g., property images, car images, product images), you can perform Blind Watermark extraction before users upload image resources. If watermark information is detected, it confirms the image originates from existing resources, allowing you to take appropriate actions (e.g., reminding users not to duplicate uploads).
Resource Leakage Prevention
For internally shared image resources, you can use Blind Watermark to embed the accessing party's information into the image upon request. When resource leakage occurs, the blind watermark can be extracted from the leaked resource image to identify the source of the leak.
Prerequisites
You have enabled the COS service, created a Bucket, and uploaded files to the Bucket. For specific operations, see Bucket files. You have activated the Cloud Infinite service and bound the Bucket. For specific operations, see Bucket Binding.
Usage
Cloud Infinite provides the following methods for configuring and managing basic image services.
API: Tencent Cloud provides API interfaces for you to configure Blind Watermark. See Image Blind Watermark. SDK: You can also use SDK for configuration and management of the Blind Watermark capability.