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Öğe Improving The Cost-Volume Based Local Stereo Matching Algorithm(IEEE, 2018) Emlek, Alper; Peker, Murat; Yalcin, Mehmet KursatAdaptive support weights (ASW) are one of the best methods for matching costs in local stereo matching algorithms. In the literature, the most common method is guided filter for calculating the support weight. Guided filter-based methods generally apply the right-left consistency check during the disparity refinement process. However, this process requires the two difference maps which are obtained by taking the reference of the right image and the left image. In this case, since two difference maps need to be obtained, the processing load is almost doubled. With the proposed algorithm, the difference map for the left image is obtained with the winner-take-all (WTA) method after the costs are calculated with the help of the guided filter. Later on, this difference map has been corrected with the help of the cross-based window approach, by this, both the performance was improved and the processing costs were reduced, this resulted in a nearly twofold reducement in terms of the processing time. The results obtained were tested in the Middlebury dataset.Öğe Matlab/Simulink ve X-Plane Uçuş Benzetim Programi Arasi UDP Haberleşme ile Veri Transferi(Institute of Electrical and Electronics Engineers Inc., 2019) Ersoy, Erhan; Yalcin, Mehmet KursatDrone or other Unmanned Aerial Vehicles (UAVs), known as four-rotor, are actively used by different industries, besides using for hobby purposes. Traffic control, advertising and cargo transportation can be given as an examples of areas where UAVs are used. The success of the UAVs in the specified sectors depends on the success of the autopilot systems. The slightest error that may occur in autopilot systems used in UAVs causes material damage and even makes them unusable. The best way to test the success of autopilot systems is flight tests. The fact that flight tests are costly necessitates the use of loop systems in software and hardware that will enable these tests to be performed with the use of computers and various hardware in the laboratory environment. Because of this reason, in this study, data transfer by UDP communication between control system at Matlab / Simulink enviroment and X-Plane flight simulation program developed by Laminar Research company which presents the most realistic flight dynamics and environmental conditions explained. © 2019 IEEE.Öğe Performance Analysis of Wearable and Flexible Humidity Sensor Integrated to Face Mask for Respiration Monitoring(Institute of Electrical and Electronics Engineers Inc., 2021) Tekcin, Meltem; Kuzubasoglu, Burcu Arman; Sayar, Ersin; Yalcin, Mehmet Kursat; Bahadir, Senem KursunIn this study, PEDOT:PSS conductive polymer printed flexible humidity sensor has been designed and fabricated to sense human respiration monitoring. PEDOT:PSS with conductive ink specifically formulated in our study, was printed on polyamide-based taffeta label fabric by an inkjet printing method. The sensitivity of the printed humidity sensor has been tested under different humidity levels inside a humidity chamber. Then, the sensor has been integrated into a face mask in order to evaluate the respiration monitoring of a user who wears the face mask in a real environment. The sensing capability of the wearable sensor and its response against respiration monitoring was evaluated under various breathing conditions such as fast and deep breathing, differentiating nose and mouth breathing. Owing to its flexible structure and printability onto textile, the wearable printed humidity sensor has the potential to be used for healthcare applications particularly for capturing user biomedical data. © 2021 IEEE.Öğe Wearable and Flexible Humidity Sensor Integrated to Disposable Diapers for Wetness Monitoring and Urinary Incontinence(Mdpi, 2022) Tekcin, Meltem; Sayar, Ersin; Yalcin, Mehmet Kursat; Bahadir, Senem KursunDisposable diapers are widely used by individuals with urinary incontinence. Diapers should be checked frequently for elderly, disabled, and hospital patients. Wet diapers that are not changed properly can cause health problems. The importance of electronic devices that provide warning in case of wetness is increasing in health monitoring. A disposable and wearable printed humidity sensor was designed and fabricated to detect wetness. The sensor was printed on polyamide-based taffeta label fabric by the inkjet printing method using specifically formulated PEDOT:PSS-based conductive polymer ink. The sensor sensitivity was tested under different relative humidity levels inside a controlled chamber. The resistance of the sensor decreased from 17.05 +/- 0.05 M Omega to 2.09 +/- 0.06 M Omega as the relative humidity increased from 35 to 100%, while the moisture value of the fabric increased from 4.8 to 23%. The response and recovery times were 42 s and 82 s. This sensor was integrated into the adult diaper to evaluate wetness. The sensor resistance change comparing to the dry state resistance (15.52 M Omega) was determined as 3.81 M Omega to 13.62 M Omega by dripping 0.1 mL to 100 mL salty water on the diaper. Due to its flexible structure and low-cost printability onto fabric, the wearable printed humidity sensor has the potential to be used as a disposable sensor for healthcare applications, particularly for urinary incontinence and capturing wetness in diapers.
