Blockchain New Technology Company Files Patent for Image Digital Watermarking, Enhancing Image Security

Blockchain New Technology Company Files Patent for Image Digital Watermarking, Enhancing Image SecurityOn December 5, 2024, the State Intellectual Property Office of China (SIPO) revealed that Blockchain New Technology (Guangzhou) Co., Ltd

Blockchain New Technology Company Files Patent for Image Digital Watermarking, Enhancing Image Security

On December 5, 2024, the State Intellectual Property Office of China (SIPO) revealed that Blockchain New Technology (Guangzhou) Co., Ltd. filed a patent application (publication number CN119067827A, application date September 2024) for an "Image Digital Watermarking Embedding and Extraction Method and Device." This patent technology focuses on enhancing image security, effectively addressing issues such as image tampering and theft, and providing new technical means for digital copyright protection.

The patent application discloses an innovative image digital watermarking embedding and extraction method and device. The technical solution cleverly combines the Discrete Wavelet Transform (DWT) algorithm and a correction template technology to achieve efficient embedding and accurate extraction of image digital watermarks, significantly enhancing the image's resistance to attacks.

The patent abstract details the technical process. First, the system uses the DWT algorithm to perform a discrete wavelet transform on the original image, decomposing it into sub-bands of different frequency bands. Then, the patent technology selects specific frequency bands to embed watermark information and embeds a correction template in other bands. This strategy effectively hides the watermark information, achieving the goal of information hiding. The carefully designed embedding method not only effectively protects the watermark information but also improves the accuracy of watermark extraction.

The technology's advantage lies in its strong anti-attack capability. Traditional digital watermarking techniques are easily affected by image compression, rotation, cropping, and other operations, leading to watermark loss or difficulty in extraction. This patented technology overcomes these challenges by embedding watermarks in specific frequency bands and incorporating correction template technology. The correction template helps the system accurately restore the original state of the image when geometric transformations (such as rotation and cropping) occur, ensuring successful watermark extraction.

Importantly, this technology can effectively detect whether an image has undergone geometric transformations. If a geometric transformation is detected, the system automatically performs an inverse geometric transformation, restoring the image to its original state before watermark extraction. This greatly enhances the robustness of the watermarking technology, ensuring accurate watermark extraction even after complex image processing.

The patent technology also excels in the accuracy of watermark extraction. According to the patent abstract, the watermark extraction accuracy is extremely high, with the error rate generally controlled within 8%. Regardless of which color channel the watermark is embedded in, a high watermark extraction accuracy is guaranteed. This indicates that the technology has good stability and reliability, providing reliable image security protection in various application scenarios.

This patented technology has broad application prospects. In the field of digital copyright protection, it can effectively prevent image theft and tampering, protecting the legitimate rights and interests of copyright holders. In the field of digital media security, it can be used to protect important image information from leakage or destruction. The technology also has significant application value in other areas requiring image security protection, such as medical imaging and military imaging.

In summary, the patent application for the "Image Digital Watermarking Embedding and Extraction Method and Device" by Blockchain New Technology (Guangzhou) Co., Ltd. represents a significant direction in the development of digital watermarking technology. Its innovative technical solution, strong anti-attack capability, and high-precision watermark extraction capability provide a new solution for image security protection, with significant social and economic benefits. The successful development and application of this technology will further promote the development of the digital economy and contribute to building a more secure and reliable digital society. The ingenious combination of the DWT algorithm and the correction template demonstrates strong technical strength in the field of image security protection, providing new technical safeguards for digital copyright protection and information security. This technology not only enhances the robustness of the watermark but also reduces the watermark extraction error rate, ensuring the reliability and integrity of the watermark information, which is of great significance for maintaining the security and integrity of digital assets. The application of this technology will widely benefit various industries and contribute to building a more secure and reliable digital society. In the future, as the technology continues to improve and application scenarios expand, this technology is expected to play a more significant role in more fields, making greater contributions to promoting digital economic development and ensuring information security. Its efficient and reliable image protection mechanism will become an important cornerstone in maintaining the security of the digital world. The emergence of this technology is undoubtedly a significant breakthrough in the field of digital security, and it provides stronger technical support for image copyright protection. With further technological maturity and application promotion, it will play an increasingly important role in the development of the digital economy. The successful application of this patent marks new progress in China's digital watermarking technology, providing new technical means to safeguard digital copyright and information security.