Manyhighway toll collection systems have already been developed and are widely used in India. Some of these include Manual toll collection, RF tags, Barcodes, Number plate recognition. All these systems have disadvantages that lead to some errors in the corresponding system. This paper presents a brief review of toll collection systems present in India, their advantages and disadvantages and also aims to design and develop a newefficient toll collection system which will be a good low cost alternative among all other systems.The system is based on Computer Vision vehicle detection using OpenCV library in Embedded Linux platform. The system is designed using Embedded Linux development kit (Raspberry pi).In this system, a camera captures images of vehicles passing through toll booth thus a vehicle is detected through camera.Depending on the area occupied by the vehicle,classification of vehicles as light and heavy is done.Further this information is passed to the Raspberry pi which is having web server set up on it.When raspberry pi comes to know the vehicle,then it access the web server information and according to the type of the vehicle,appropriate toll is charged.This system can also made to count moving vehicles from pre-recorded videos or stored videos by using the same algorithm and procedure that we follow in this paper.

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Advances in the multimedia technology provide an opportunity to enhance learning an Engineering subject like Digital Signal Processing (DSP). The paper presents a new teaching method that effectively integrates Information Technology into teaching -learning process. The entire DSP modules are implemented in an open source Course Management System (CMS), Moodle. It helps the students at undergraduate level in learning introductory DSP and experimenting with its basic concepts. At the same time, course instructors also find smooth flow of the contents covered that helps them in enhancing the effectiveness of their lectures, assign tasks to students with simple methods of evaluation and easy tracking of student's progress at every stage of learning.Moodle has been adopted by many people and organizations around the world, as it offers a tightly integrated set of tools to develop a powerful E-Learning tool. The focus here is upon effective adoption of the tool so that the teacher concentrates more on the learning activities and uses all the Moodle tools successfully. Moodle helps to present the course contents exactly the way the teacher has mapped the subject structure, but through a more controlled environment. The method is well suited for teaching the theoretical and mathematical concepts of DSP.