Ijaz Bukhari

Ijaz Bukhari, Nuhman-ul-Haq, Khizar Hyat

Watermarking helps in ensuring originality, ownership and copyrights of a digital image. This paper aims at embedding a Watermark in an image using Wave Atom Transform. Preference of Wave Atoms on other transformations has been due to its sparser expansion, adaptability to the direction of local pattern, and sharp frequency localization. In this scheme, we had tried to spread the watermark in an image so that the information at one place is very small and undetectable. In order to extract the watermark and verify ownership of an image, one would have the advantage of prior knowledge of embedded locations. A noise of high amplitude will be needed to be added to the image for watermark distortion. Furthermore, the information spread will ensure the robustness of the watermark data. The proposed scheme has the ability to withstand malicious operations and attacks.

Ijaz Bukhari

Alzheimer's, an old age disease of people over 65 years causes problems with memory, thinking and behavior. This disease progresses very slow and its identification in early stages is very difficult. The symptoms of Alzheimer's appear slowly and gradually will have worse effects. In its early stages, not only the patients themselves but their loved ones are generally unable to accept that the patient is suffering from disease. In this paper, we have proposed a new algorithm to detect patients of Alzheimer's at early stages by comparing the Magnetic Resonance Images (MRI) of the patients with normal persons of their age. The progress of the disease can also be monitored by periodic comparison of the previous and current MRI.