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Advanced Methods for 3D Video Capturing and Evaluation
Kaller, Ondřej ; Klíma, Miloš (oponent) ; Masopust, Jiří (oponent) ; Kratochvíl, Tomáš (vedoucí práce)
The thesis focuses on advanced methods for 3D image and video capturing and evaluation. Based on a brief summary of spatial perception principles and the description of the state of the art in the areas of adaptive parallax and cameras configuration for traditional stereo pair shooting, especially up-to-date possibilities of depth map estimation are analyzed. Both active and passive methods are discussed; profilometry scanning is explained in more details. Qualitative parameters of two typical present systems of 3D displays are compared. The analysis is made for polarize discriminated and time multiplexed 3D displays technologies. Crosstalk between left and right images has been also measured. The core of the work consists in the design and testing of a new method of more precise estimation of the depth map in 3D videos. The novelty of the proposed approach lies in a sophisticated combination of partial results obtained by selected existing passive and active 3D scanning methods. The aim of the combination is to overcome drawbacks of individual methods and this way, to improve the accessible precision of the final depth map. The active method used is incoherent profilometry scanning which fails on surface discontinuities. As a passive method, a stereo pair matching is used. This method is currently the most widely applied method of depth map estimation in the field of 3D capturing and is available in various implementations. Finally, subjective tests of 3D video quality of experience (QoE) are dealt with. The most important outcome here is creation of the objective metric for the best estimation of subjective stereoscopic video quality.
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Supravodivost ve čtvrtém skupenství
Mádrová, Tereza ; Klíma, Miloš (oponent) ; Fiala, Pavel (vedoucí práce)
Tato diplomová práce se zabývá zkoumáním a popisem šířením elektromagnetických vln v plazmatu. Jsou známy jednoduché případy šíření elektromagnetické vlny v plazmatu, například kolem koaxiálního vedení v tzv. bezeztrátovém režimu, jinými slovy vykazuje vlastnosti, jaké jsou známy u supravodivých materiálů. Takto postavený pohled na vlastnosti plazmatu může výrazně pomoci objasnit pozorované jevy v experimentálním výzkumu plazmatu nebo nastínit nové trendy ve využití plazmatu v tomto režimu. V úvodu a teoretické části je popsána známá teorie vztahující se k šíření elektromagnetické vlny v nehomogenním nebo neizotropním prostředí, následně v dalších částech práce je zmíněn a rozpracován matematický model řešené problematiky šíření vln v plazmatu, následně navazuje návrh a realizace experimentu. Model zahrnuje zpracování Maxwellových redukovaných rovnic v Haevisidově notaci pro stav hmoty označovaný jako plazma, dále návrh modelu pro numerické modelování, analýzu a návrh jednoduchého experimentu pro ověření numericky analyzovaných výsledků.
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Selected Problems in Photogrammetric Systems Analysis
Boleček, Libor ; Levický, Dušan (oponent) ; Klíma, Miloš (oponent) ; Říčný, Václav (vedoucí práce)
This dissertation deals with selected topics of digital photogrammetry. The problem is defined and the state of the art is described in the first part of the dissertation. Four specified aims are solved. The proposal of the method for finding corresponding points is the first topic. Two new methods were proposed. The first method uses conversion of an image to pseudo- colors. The second method used a probabilistic model obtained from the known pairs of the corresponding points. The analysis of the accuracy of the reconstruction is the second solved topic. The influence of the various aspects to the accuracy of the reconstruction is analyzed. The most attention is paid to incorrect camera alignment and errors in finding corresponding points. The third topic is estimation of the depth maps. The two method were proposed. The first method is based on the combination of the passive and active method. The second wholly passive approach uses continuity of the depth map. The last investigative topic is quality of experience of the 3D videos. The subjective tests of the perception of 3D content for the various 3D displaying systems were performed. The dependency of the perception on the viewing angle was also investigated.
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Supravodivost ve čtvrtém skupenství
Mádrová, Tereza ; Klíma, Miloš (oponent) ; Fiala, Pavel (vedoucí práce)
Tato diplomová práce se zabývá zkoumáním a popisem šířením elektromagnetických vln v plazmatu. Jsou známy jednoduché případy šíření elektromagnetické vlny v plazmatu, například kolem koaxiálního vedení v tzv. bezeztrátovém režimu, jinými slovy vykazuje vlastnosti, jaké jsou známy u supravodivých materiálů. Takto postavený pohled na vlastnosti plazmatu může výrazně pomoci objasnit pozorované jevy v experimentálním výzkumu plazmatu nebo nastínit nové trendy ve využití plazmatu v tomto režimu. V úvodu a teoretické části je popsána známá teorie vztahující se k šíření elektromagnetické vlny v nehomogenním nebo neizotropním prostředí, následně v dalších částech práce je zmíněn a rozpracován matematický model řešené problematiky šíření vln v plazmatu, následně navazuje návrh a realizace experimentu. Model zahrnuje zpracování Maxwellových redukovaných rovnic v Haevisidově notaci pro stav hmoty označovaný jako plazma, dále návrh modelu pro numerické modelování, analýzu a návrh jednoduchého experimentu pro ověření numericky analyzovaných výsledků.
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Advanced Methods for 3D Video Capturing and Evaluation
Kaller, Ondřej ; Klíma, Miloš (oponent) ; Masopust, Jiří (oponent) ; Kratochvíl, Tomáš (vedoucí práce)
The thesis focuses on advanced methods for 3D image and video capturing and evaluation. Based on a brief summary of spatial perception principles and the description of the state of the art in the areas of adaptive parallax and cameras configuration for traditional stereo pair shooting, especially up-to-date possibilities of depth map estimation are analyzed. Both active and passive methods are discussed; profilometry scanning is explained in more details. Qualitative parameters of two typical present systems of 3D displays are compared. The analysis is made for polarize discriminated and time multiplexed 3D displays technologies. Crosstalk between left and right images has been also measured. The core of the work consists in the design and testing of a new method of more precise estimation of the depth map in 3D videos. The novelty of the proposed approach lies in a sophisticated combination of partial results obtained by selected existing passive and active 3D scanning methods. The aim of the combination is to overcome drawbacks of individual methods and this way, to improve the accessible precision of the final depth map. The active method used is incoherent profilometry scanning which fails on surface discontinuities. As a passive method, a stereo pair matching is used. This method is currently the most widely applied method of depth map estimation in the field of 3D capturing and is available in various implementations. Finally, subjective tests of 3D video quality of experience (QoE) are dealt with. The most important outcome here is creation of the objective metric for the best estimation of subjective stereoscopic video quality.
|
|
|
Selected Problems in Photogrammetric Systems Analysis
Boleček, Libor ; Levický, Dušan (oponent) ; Klíma, Miloš (oponent) ; Říčný, Václav (vedoucí práce)
This dissertation deals with selected topics of digital photogrammetry. The problem is defined and the state of the art is described in the first part of the dissertation. Four specified aims are solved. The proposal of the method for finding corresponding points is the first topic. Two new methods were proposed. The first method uses conversion of an image to pseudo- colors. The second method used a probabilistic model obtained from the known pairs of the corresponding points. The analysis of the accuracy of the reconstruction is the second solved topic. The influence of the various aspects to the accuracy of the reconstruction is analyzed. The most attention is paid to incorrect camera alignment and errors in finding corresponding points. The third topic is estimation of the depth maps. The two method were proposed. The first method is based on the combination of the passive and active method. The second wholly passive approach uses continuity of the depth map. The last investigative topic is quality of experience of the 3D videos. The subjective tests of the perception of 3D content for the various 3D displaying systems were performed. The dependency of the perception on the viewing angle was also investigated.
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