Application of Data Hiding Method Based on Triplet Difference in QR Code Images

Ensuring the privacy and security of sensitive information is paramount in the digital age. Quick response (QR) codes, known for their high data density and robust error correction capabilities, have become widely used, making them an ideal medium for secure data transmission. This paper introduces a novel data hiding method based on triplet differences, designed to embed secret information within QR code images. The proposed method manipulates the differences between pixel triplets in the QR code matrix, achieving high payload capacity while maintaining the structural integrity and readability of the QR code. By leveraging the inherent redundancy of the QR code matrix, this technique imperceptibly encodes hidden data and resists various forms of image processing attacks. Performance is evaluated based on data capacity, imperceptibility, and robustness to errors. Experimental results demonstrate that the triplet difference method significantly outperforms traditional data hiding techniques in terms of efficiency and security. This study highlights the potential applications of the triplet difference method in secure information sharing, digital watermarking, and authentication, paving the way for advanced data hiding techniques that enhance the security and practicality of QR code technology.