Essays about: "3D reconstruction"

Showing result 31 - 35 of 175 essays containing the words 3D reconstruction.

  1. 31. Preparations for photon external beam radiotherapy treatment planning of small animals

    University essay from Lunds universitet/Sjukhusfysikerutbildningen

    Author : Joanie Diha Guei; [2022]
    Keywords : Medicine and Health Sciences;

    Abstract : Introduction:The XenX is a small animal irradiation system that acquires high-resolution cone-beam tomography (CBCT) images of small animals and treats small animals with higher precision than medical linear accelerators. MuriSlice is a software for CBCT image reconstruction. READ MORE

  3. 32. Lens Distortion Correction Without Camera Access

    University essay from Linköpings universitet/Datorseende

    Author : Emily Olsson; [2022]
    Keywords : Lens distortion; Lens distortion correction; Perspective n-Point; Camera calibration;

    Abstract : Lens distortions appear in almost all digital images and cause straight lines to appear curved in the image. This can contribute to errors in position estimations and 3D reconstruction and it is therefore of interest to correct for the distortion. If the camera is available, the distortion parameters can be obtained when calibrating the camera. READ MORE

  4. 33. DEVELOPMENT OF IMMERSIVE EXPERIENCE FOR THE RECONSTRUCTION OF A VINTAGE CINEMA THEATRE - Explore techniques of game design and immersive technology to recreate the experience of exploring the Flamman cinema building

    University essay from Göteborgs universitet/Institutionen för data- och informationsteknik

    Author : PETRA BÉCZI; [2021-11-03]
    Keywords : virtual reality; Oculus Quest 2; preserving cultural heritage; Blender; Unity game engine; game design and development; haptics; immersive simulation; motion sickness; technological affordances; computer graphics; performance optimization; play testing and observation; interview; thematic analysis;

    Abstract : Virtual reality (VR) made cinema applications today can be considered as simple media players that are often set in a fictions environment without the privilege of explorability given to the user - who from the start remains seated in the virtual world. That is due to the definition of user control which is restrained to the extent that the controllers are moderated to the definition of interaction with graphical user interfaces such as media player buttons. READ MORE

  5. 34. 2D & 3D phase retrieval for propagation-based X-ray phase-contrast tomography

    University essay from Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Author : Philip Stjärneblad; [2021]
    Keywords : Propagation-based X-ray phase-contrast tomography; PB-PCT; Propagation-based X-ray phase-contrast Imaging; PB-PCI; 2d phase retrieval; 3d phase retrieval; TIE; sinogram consistency; reconstruction artefacts; Science General;

    Abstract : Propagation-based X-ray phase-contrast tomography is a 3d imaging technique that utilizes two-dimensional projections from different angular views $\theta =[0,\pi]$ to reconstruct the 3D object information. The phase-contrast allows for higher feature contrast than conventional transmission tomography, as the phase interference gives rise to a sharp edge contrast. READ MORE

  6. 35. Image Processing in MRI Guided Real-TimeAdaptive Radiotheraphy - Upsampling and Segmentation of Target Volume and Organs at Risk

    University essay from Uppsala universitet/Institutionen för informationsteknologi

    Author : Shreyas Shivakumara; [2021]
    Keywords : ;

    Abstract : Magnetic Resonance Imaging (MRI) is a useful medical imaging technique that is used for cancer treatment.The major drawback of this method is the relatively long scan time, limiting its use for real time tracking of a potentially moving target during the radiotherapy session. READ MORE