Identity management is crucial in cyberspace where infringement of one's privacy, copy right disputes, theft and other malicious activities are very rampant. There exists a need of ownership identification and authentication of digital images. In solving and contributing to this field, we proposed a cryptographic and watermarking encryption technique for securing and authentication of digital images for identity management. In our approach, we encrypt the data to be embedded into the image before embedding it to the image. We make sure we select a random position in the image based on an embedding key. We make sure the message to be embedded was converted into values that falls in between 0-255. This is to avoid it being detected using forensic or steganalytic software.
Malaria parasite, Plasmodium falciparum, uses haemoglobin in host red blood cells (RBCs) as a major source of nutrient in ring and trophozoite stages. This brings about changes in the morphology and functional characteristics of the RBCs. We investigate malaria infected RBCs and uninfected RBCs-ring and trophozoite stages using multispectral imaging technique. Four spectral bands were found to be markers for identifying infected and uninfected RBCs: 435 nm and 660 nm were common markers for the two stages whiles 590 nm and 625 nm were markers for the ring and the trophozoite stages respectively. These four spectral bands may offer potential diagnostic markers for identifying infected and uninfected RBCs, as well as distinguishing ring and trophozoite stages.
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