Dear Colleagues,

Underwater acoustic imaging is one of the most important technologies to obtain underwater information. Acoustic imaging has become the core technology of seafloor topography, underwater shipwreck salvage, underwater unexploded ordnance detection, underwater archaeology, search for pipelines and other human-made objects, marine geological surveys, and so on. In recent years, high-dimensional, high-resolution, and high-efficiency underwater acoustic imaging systems have become more easily implemented due to the evolution of imaging algorithms and the continuous improvement and innovation of imaging components, such as sound transducers and signal receivers. On the other hand, the great progress which has been achieved in the fields of digital signal processing, computer vision, parallel calculation, etc. has enabled larger-scale, faster, and more efficient information computing. Advances in these two fields have contributed to the wide use of underwater acoustic imaging equipment. As one of the hotspots in the research field of underwater acoustic imaging, image processing technology makes use of the advances of neural networks, pattern recognition, machine learning, computational reconstruction, and other advanced technology. A lot of progress has been made in image reconstruction, image stitching, classification, and recognition. To show the latest research progress, promote academic exchanges, and promote the development of related fields, we have set up a Special Issue of “Underwater Acoustic Imaging and Image Processing Technology” and invite research papers from experts and scholars. Potential topics include but are not limited to the following:

• Design and development of acoustic imaging systems;
• Applications of underwater acoustic imaging sonar;
• Analysis and processing of underwater acoustic images;
• Detection and classification in underwater acoustic images.

Dr. Jie Tian
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

• Side-scan sonar
• Synthetic aperture sonar
• Multibeam sonar
• Sub-bottom profiling
• Underwater acoustic tomography
• Underwater 3D acoustic imaging
• Image reconstruction
• Image mosaic
• Image processing
• Object identification and classification
• Moving target detection and tracking
• Underwater security techniques