Images corrupted by the noise during either transmission or acquisition process. Filtering and or smoothing an important task to reduce the effect of noises that contaminates images. Hence the processed image is useful for further applications. This paper analyses the suitable smoothing filter for the edge mask derived using Third Order Difference Equation (TODE). State of the art edge preserving smoothing filters like non linear bilateral filter and linear guided filter is applied on different sample images after degrading them with Additive White Gaussian Noise(AWGN). Since AWGN is most common type of Gaussian noise useful for testing. Both second and third order edge mask is tested using these approaches. Performance metric such as MSE, PSNR and Entropy were computed. The results prove that the guided filter is best suited for the TODE edge mask.

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Remote patient monitoring through telemedicine has become very usual nowadays. Sensor are attached to the patient's body and they monitor the during various activity, the data acquires from sensor is given as input to genetic algorithm based activity recognition system. If any deviations are vital signs during any activity, it is informed to the physician. Simulation was performed by taking 10 sample patients and some activities. Results prove the efficiency of the algorithm. INTRODUCTION: Telemedicine plays a very important role in patient management and have been effectively used for intra hospital transport of patients. Live monitoring of patients from both the hospitals creates new challenges. Similarly issues arise as how to process the data captured in real time. Sensors can overcome some of the challenges faced in telemedicine (Gaynor et al 2004). Advances in Micro Electro Mechanical Systems (MEMS) and Nano technology have enabled design of low powers sensor nodes capable of sensing different vital signs in our body. These nodes can communicate with each other to aggregate data and transmit vital parameters to a Base Station. The data collected in the base station can be used to monitor health in real time. The patient wearing sensors m be mobile leading to aggregation of data from different BS for processing. Processing real time data is compute intensive and telemedicine facilities may not have appropriate hardware to process the real time data effectively. Hence we propose a genetic algorithm based activity recognition which monitors the patient activity and send message to the doctor @ IJTSRD |

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Edges are the regions of object where there is a pointed change in intensity or gray level. Edge detection is one of the most frequently used operations in image analysis. If the edges are accurate, all the objects are located efficiently and the performance can be evaluated easily. Process of Edge detection is really a complicated task. Lot of research has been done in this field for many years. Object recognition, Target tracking, Segmentation, Data compression and Image matching are the most important areas of application where edge detection is highly required. This paper introduces a new edge detection technique using derivative mask. This mask is based on third order difference equation. The experimental results demonstrate the effectiveness of the new edge detector in terms of PSNR (Peak Signal to Noise Ratio) and MSE (Mean Square Error). Performance of this new mask compared with second order Laplacian Mask. Proposed mask is efficient and faster to implement. Experimental result on various images shows all the edges efficiently.

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