An application of Zernike moments based digital watermarks for photo document electronic archive management

In this article authors are considering about information security data integrity problem relevant for electronic archive management. In high-tech industry large electronic photo archives arises as a part of quality management. Photofixation applied for responsible operations control, documenting the technological process, fixing the components state on input and output control, incongruities registration. An image substitution or reuse possibility makes necessary electronic archive proto document integrity control. This illegal actions can be both the result of operator mistake and motivated by intentional a defect concealment. As a solution authors suggest an electronic archive organizing method for storing photo documents. The method based on a digital watermark labeling of full-color images with orthogonal Zernike moments calculated for certain image points (and their neighborhoods). Suggested method can prevent watermark destruction by geometric image transformation (rotation, compressing, reflection etc.). Digital watermark contains both information about technological process on current image and information about other images - this fact lets talk about integrity of whole photo documents set. One of the most important method characteristic is image format invariability and additional metadata files unnecessary what allows user to use standard software for a further work with photo document.