Detection Theory in Ultrasonic Imaging
نویسندگان
چکیده
منابع مشابه
Phased array ultrasonic imaging using an improved beamforming based total focusing method for non destructive test
One of the novel ultrasonic phased array based scanning methods for ultrasonic imaging in non-destructive test is total focusing method (TFM). This method employs maximum available information of the phased array elements and leads to an improved defect detection accuracy compared to conventional scanning methods. Despite its high detection accuracy, TFM behaves weak in distinguishing the real ...
متن کاملPhased array ultrasonic imaging using an improved beamforming based total focusing method for non destructive test
One of the novel ultrasonic phased array based scanning methods for ultrasonic imaging in non-destructive test is total focusing method (TFM). This method employs maximum available information of the phased array elements and leads to an improved defect detection accuracy compared to conventional scanning methods. Despite its high detection accuracy, TFM behaves weak in distinguishing the real ...
متن کاملAnalysis and Synthesis of Frequency-Diverse Ultrasonic Flaw Detection System using Order Statistics and Neural Network Processors
Ultrasonic imaging has been an essential tool for nondestructive evaluation of materials and flaw detection. However, flaw detection in the presence of microstructure scattering noise is a challenging problem. This chapter presents frequency-diverse ultrasonic detection algorithms which are essential to decorrelate the microstructure scattering noise and to enhance the visibility of echoes asso...
متن کاملStudy on the Technology of Ultrasonic Imaging Detection based on Phase Array
Ultrasonic testing is an important flaw detection technology in nondestructive testing field. With its unique electronic scanning, dynamic deflection focusing (DDF), sectorial scanning characters and ultrasonic phased array (UPA) technology can be used for defecting detection of objects with curved face or complex structure. Thus, UPA technology has become a focus of ultrasonic testing research...
متن کاملStochastic explanation of speckle contrast detection in ultrasound-modulated optical tomography.
Ultrasound-modulated optical tomography is an imaging technique that detects ultrasonically tagged light in optically turbid media to obtain images with optical contrast and ultrasonic spatial resolution. A CCD-camera-based speckle contrast detection scheme has been introduced previously to detect modulated light emerging from the ultrasonic sample volume. Differences in speckle contrast were e...
متن کامل