Abstract: An image processing technology is proposed in this paper to enhance the security for wheelchair users. Based this algorithm, it can recognize the frame and shape of wheelchairs and track the route of wheelchair. When the wheelchair is detected, the system starts to track the motion of the patient and assistants. Once patients tend to get out of the bed using wheelchairs in the hospital, this algorithm can detect and track patient to prevent any accidental event occurred in advance. After analyzing raw images, the technique can reveal the location of the image and swiftly localize the moving wheelchair and assistants. Based on the image space relative constrained, this technique can recognize whether assistants are just behind wheelchair-patients. This application can be used in the ward and corridor. Based on experimental results, it shows that the detection rate of algorithm on wheelchair detection and assistants tracking is up to 91%. Keywords: Image processing technology, Track the