A new fast and efficient visual cryptography scheme for medical images with forgery detection

In the field of medicine, storing images in a secure way has become a challenge. In order to face this challenge of security, we propose an algorithm based on visual cryptography for black and white medical images. Here, we bring out a new approach to visual cryptography. The main advantage of this system is that there is no necessity for post processing of the image without which a good quality of the image is obtained. More security is provided by using the JPEG Ghost technique, which performs forgery checking on the reconstructed medical image. This paper proposes a technique of processing the medical image and dividing it into two shares in an unpredictable format. These two shares can be overlaid on which the original image is retrieved. This reconstructed medical image undergoes a forgery detection checking and determines whether the obtained image is forged one or not. This technique can be implemented in the medical field for storing images of X-ray, MRI scan, CT scan and Ultrasound scan in a secure way. Research is going on to import these images over networks in a compressed and secure manner.