Sökning: "Image reconstruction"

Visar resultat 16 - 20 av 312 avhandlingar innehållade orden Image reconstruction.

1. 16. The high dynamic range imaging pipeline : Tone-mapping, distribution, and single-exposure reconstruction

   Författare :Gabriel Eilertsen; Jonas Unger; Rafał Mantiuk.; Anders Ynnerman; Erik Reinhard; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; high dynamic range imaging; tone-mapping; video tone-mapping; HDR video encoding; HDR image reconstruction; inverse tone-mapping; machine learning; deep learning;

   Sammanfattning : Techniques for high dynamic range (HDR) imaging make it possible to capture and store an increased range of luminances and colors as compared to what can be achieved with a conventional camera. This high amount of image information can be used in a wide range of applications, such as HDR displays, image-based lighting, tone-mapping, computer vision, and post-processing operations. LÄS MER

3. 17. Enhanced image analysis, a tool for precision metrology in the micro and macro world

   Författare :Bita Daemi; Lars Mattsson; Peter Ekberg; Mikael Sjödahl; KTH; []
   Nyckelord :Image processing; image metrology; precision metrology; image correlation; subpixel; accuracy; uncertainty; Production Engineering; Industriell produktion;

   Sammanfattning : The need for high speed and cost efficient inspection in manufacturing lineshas led to a vast usage of camera-based vision systems. The performance ofthese systems is sufficient to determine shape and size, but hardly to an accuracylevel comparable with traditional metrology tools. LÄS MER

4. 18. Advances in the Management of Facial Paralysis Sequelae

   Författare :Villiam Vejbrink Kildal; Andres Rodriguez-Lorenzo; Patrik Lassus; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; facial paralysis; facial palsy; facial synkinesis; synkinesis; facial contracture; facial nerve reconstruction; nerve transfer; nerve graft; microsurgery; myectomy; depressor anguli oris; depressor labii inferioris; platysma; mentalis; lacrimal gland; botulinum toxin; injection; ultrasound; sonography; ultrasonography; crocodile tears syndrome; gustatory hyperlacrimation; excessive tearing; literature review; review; classification system; management algorithm; plastic surgery; static reconstruction; dynamic reconstruction; Plastikkirurgi; Plastic Surgery;

   Sammanfattning : Background: Despite advances in the management of facial paralysis and its associated sequelae, therapies targeting the lower facial region remain underdeveloped. This thesis aimed to improve both the diagnostic and therapeutic modalities for facial paralysis, with a focus on the lower face. LÄS MER

5. 19. Algebraic Reconstruction Methods

   Författare :Touraj Nikazad; Tommy Elfving; Constantin Popa; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; iterative methods; image reconstruction; ART; Cimmino; Kaczmarz; Landweber; sequential iteration; simultaneous iteration; block iteration; semi-convergence; relaxation parameters; stopping rules; discrepancy principle; Numerical analysis; Numerisk analys;

   Sammanfattning : Ill-posed sets of linear equations typically arise when discretizing certain types of integral transforms. A well known example is image reconstruction, which can be modeled using the Radon transform. After expanding the solution into a finite series of basis functions a large, sparse and ill-conditioned linear system occurs. LÄS MER

7. 20. Perceptual Surface Reconstruction

   Författare :Jens Månsson; Kognitionsvetenskap; []
   Nyckelord :HUMANIORA; HUMANITIES; system; kontroll; Psychology; Psykologi; numerisk analys; Datalogi; systems; control; numerical analysis; Surface; Contour; Depth; Vision; Binocular; Computer science;

   Sammanfattning : How does the brain transform the 2-D light arrays in our eyes into a meaningful 3-D description of surfaces around us? What assumptions does the visual system make about the world when information is incomplete? And how are these assumptions computationally expressed in this perceptual reconstruction process? These questions, and other aspects of binocular depth perception are analysed from a theoretical and computational perspective, as well as through empirical investigations. In paper one, the fundamentals of stereopsis are briefly reviewed, and the difficulties related with resolving the (stereo) correspondence problem are particularly discussed. LÄS MER