Tamper detection technique for document images using zero watermarking in wavelet domain. - Balkar Singh; Mahesh Kumar Sharma (Comput. Electr. Eng., 2021)

Efficient watermarking technique for protection and authentication of document images. - Balkar Singh; Mahesh Kumar Sharma (Multim. Tools Appl., 2022)

Tamper Detection Technique for Text Images based on Vowels and Unicode Zero Length Characters. - Balkar Singh; Ram Paul Hathwal (Wirel. Pers. Commun., 2023)

A review of digital watermarking techniques: Current trends, challenges and opportunities. - Balkar Singh; Geeta Kasana (Web Intell., 2024)

Watermarking technique for document images using discrete curvelet transform and discrete cosine transform. - Balkar Singh; Mahesh Kumar Sharma (Multim. Tools Appl., 2024)