According to World Health Organization, breast cancer is the most prevailing cancer among women which claims thousands of lives each year. Mammogram imaging modality is the popular traditional diagnosing tool used for breast cancer screening. However, one in 5 breast cancers have been missed in this screening as these machines are incapable of detecting it in early stage. Hence emerging thermography procedure is also suggested for clinical records. It produces the skin surface temperature as a thermal pattern imaging. The aim of this work is to detect breast cancer using thermographic images. Thermal images available in the DMR database have been employed for this analysis. The color conversion using YcRcB color model is carried out to extract the features from raw image. Gray tone images are obtained using thresholding. Sobel edge detection algorithm is used to segment normal and abnormal images. The image preprocessing and thresholding are done in MATLAB and segmentation algorithm is implemented in SPARTAN-3 Tyro plus FPGA kit using EDK. This developed system may help the doctors to give a second opinion.
A low-profile UWB antenna is presented in this paper for wireless body area network (WBAN) applications. The proposed antenna consists of a modified mono-cone structure by adding a semi-sphere on top of the mono-cone. A top-plate is added as overhead to the proposed antenna. This plate leads to a height reduction when compared to conventional mono-cone antennas. In this paper, the effect of ground plane dimensions, effect of top-plate dimensions, effect of the supporting legs and effect of the total height of the antenna is studied to get a better insight into the working of the radiating structure. The antenna operates in the frequency range of 4.1 GHz to 10.1GHz with return loss less than -10dB. The bandwidth of the proposed antenna is 6 GHz. The frequency domain results are obtained by simulating the design using Ansoft HFSS. The voltage standing wave ratio is less than 2 within the frequency range of the proposed antenna design. The influence of the human proximity on the antenna was simulated by placing the proposed antenna over a human body model.
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