JSE_V6_N2_RP1 Mohammed Imad Abdulsattar Aal-Nouman Journal on Software Engineering 2230 – 7168 6 2 9 14 Motion Detection, Tracking Object, Color Differences, Image Processing, Software Engineering, Computer Engineering Interface with Camera. There are two reasons for creating a motion detecting algorithm; either the result is intended for technical applications, or it is intended as a biological model. Depending on which of these two goals one has in mind, the outcome will be different. For a technical application, speed and reliability are crucial aspects. For biological models, the focus is not so much on speed as on biological realism [2]. The model presented in this paper belongs to technical application so the resolution considerations have not been taken into account. Even so the system has a resolution up to 640 x 480. The proposed project in this paper uses a webcam to record the video stream, take a snap shot - if there is a movement- and then send it to the user's email. The motion detection can be found by calculating the difference in picture color with the next picture for each pixel. October - December 2011 Copyright © 2011 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=2892