Results 1 to 10 of about 21,775 (260)
Acoustic Reconstruction for Photothermal Imaging [PDF]
Bioengineering, 2018 Pulsed illumination of a sample, e.g., of a biological tissue, causes a sudden temperature increase of light absorbing structures, such as blood vessels, which results in an outgoing acoustic wave, as well as heat diffusion, of the absorbed energy.
Peter Burgholzer +2 more
doaj +7 more sources
Acoustic Hologram Reconstruction With Unsupervised Neural Network
Frontiers in Materials, 2022 An acoustic hologram is crucial in various acoustics applications. The reconstruction accuracy of the acoustic field from the hologram is important for determining the performance of the acoustic hologram system.
Boyi Li +6 more
doaj +3 more sources
Reconstruction of Penetrable Obstacles in Acoustic Scattering
SIAM Journal on Mathematical Analysis, 2011 We develop a reconstruction algorithm to determine penetrable obstacles inside a domain in the plane from acoustic measurements made on the boundary. This algorithm uses complex geometrical optics solutions to the Helmholtz equation with polynomial-type phase functions.
Jenn-Nan Wang, GÜNTHER Uhlmann
exaly +3 more sources
Sensors, 2017 Accuracy and speed of algorithms play an important role in the reconstruction of temperature field measurements by acoustic tomography. Existing algorithms are based on static models which only consider the measurement information.
Yanqiu Li, Shi Liu, Schlaberg H. Inaki
doaj +3 more sources
Reconstruction of Vectorial Acoustic Sources in Time-Domain Tomography [PDF]
IEEE Transactions on Medical Imaging, 2009 A new theory is proposed for the reconstruction of curl-free vector field, whose divergence serves as acoustic source. The theory is applied to reconstruct vector acoustic sources from the scalar acoustic signals measured on a surface enclosing the source area.
Xu Li
exaly +3 more sources
Sparse Reconstruction for Micro Defect Detection in Acoustic Micro Imaging
Sensors, 2016 Acoustic micro imaging has been proven to be sufficiently sensitive for micro defect detection. In this study, we propose a sparse reconstruction method for acoustic micro imaging.
Yichun Zhang +6 more
doaj +3 more sources
Combating acoustic heterogeneity in photoacoustic computed tomography: A review [PDF]
Journal of Innovative Optical Health Sciences, 2020 Based on the energy conversion of light into sound, photoacoustic computed tomography (PACT) is an emerging biomedical imaging modality and has unique applications in a range of biomedical fields.
Tong Wang, Wen Liu, Chao Tian
doaj +1 more source
Overview of Underwater 3D Reconstruction Technology Based on Optical Images
Journal of Marine Science and Engineering, 2023 At present, 3D reconstruction technology is being gradually applied to underwater scenes and has become a hot research direction that is vital to human ocean exploration and development.
Kai Hu +6 more
doaj +1 more source
From acoustic room reconstruction to slam [PDF]
2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2016 Recent works on reconstruction of room geometry from echoes assume that the geometry of the sensor array is known. In this paper, we show that such an assumption is not essential; echoes provide sufficient clues to reconstruct the room's and the array's geometries jointly, even from a single acoustic event.
Ivan Dokmanic +2 more
openaire +2 more sources
Frequency-dependent attenuation reconstruction with an acoustic reflector
Medical Image Analysis, 2021 Attenuation of ultrasound waves varies with tissue composition, hence its estimation offers great potential for tissue characterization and diagnosis and staging of pathology. We recently proposed a method that allows to spatially reconstruct the distribution of the overall ultrasound attenuation in tissue based on computed tomography, using ...
Richard Rau +4 more
openaire +5 more sources