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Understanding and improving the perceived quality of reconstructed images is key to developing computer-generated holography algorithms for high-fidelity holographic displays. However, current algorithms are typically optimized using mean squared error, which is widely criticized for its poor correlation with perceptual quality. In our work, we present a comprehensive analysis of employing contemporary image quality metrics (IQM) as loss functions in the hologram optimization process. Extensive objective and subjective assessment of experimentally reconstructed images reveal the relative performance of IQM losses for hologram optimization. Our results reveal that the perceived image quality improves considerably when the appropriate IQM loss function is used, highlighting the value of developing perceptually-motivated loss functions for hologram optimization.
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http://dx.doi.org/10.1038/s41598-022-11373-8 | DOI Listing |
J Craniofac Surg
September 2025
Department of Anatomy, Keio University School of Medicine, Tokyo, Japan.
Mixed reality (MR) enables real-time overlay of virtual anatomic structures in the surgical field and has potential applications in craniofacial surgeries. Although early monobloc advancements have benefited from transfacial pinning, the technique remains challenging owing to the limited safe insertion area and orbital injury risk. The authors processed DICOM-format computed tomography images for bone segmentation and added a rod representing the optimal pin insertion trajectory.
View Article and Find Full Text PDFActa Neurochir (Wien)
September 2025
Machine Intelligence in Clinical Neuroscience & Microsurgical Neuroanatomy (MICN) Laboratory, Department of Neurosurgery, Clinical Neuroscience Center, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
Background: Microsurgical resection of thalamic tumors requires precise anatomical knowledge and meticulous preoperative planning. Given the complexity of thalamic surgery, selecting an optimal surgical approach demands an accurate three-dimensional understanding of relevant structures. Advanced imaging post-processing, including three-dimensional (3D) model construction, can aid surgical planning and mental rehearsal of the procedure.
View Article and Find Full Text PDFBioengineering (Basel)
August 2025
Department of Pediatric Oncology Surgery, Princess Maxima Center for Pediatric Oncology, 3584 CS Utrecht, The Netherlands.
Wilms' tumor is a common pediatric renal malignancy. In selected cases, nephron-sparing surgery (NSS) may be employed as part of the surgical approach. To prevent positive margins, optimal understanding of the tumor-kidney edge is essential.
View Article and Find Full Text PDFSci Rep
August 2025
Department of Computer Science, College of Computer Engineering and Sciences, Prince Sattam bin Abdulaziz University, 16273, Al-Kharj, Saudi Arabia.
Nowadays, cost-sensitive customers need customized products that demand consumption-based production. The Internet of Things (IoT) makes ubiquitous sensing and data more available, integrating with the semantic web and advanced sensor technologies. Augmented reality (AR) is a collaborative technology that boosts user experience by coating virtual digital content into reality.
View Article and Find Full Text PDFHolographic display is ideal for true 3D technology because it provides essential depth cues and motion parallax for the human eye. Real-time computation using deep learning was explored for intensity and depth images, whereas real-time generating holograms from real scenes remains challenging due to the trade-off between the speed and the accuracy of obtaining depth information. Here, we propose a real-time 3D color hologram computation model based on deep learning, realizing stable focusing from monocular image capture to display.
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