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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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Implementation of a tone mapping operator for scotopic viewing conditions
Safko, Martin ; Wilkie, Alexander (vedoucí práce) ; Kratochvíl, Miroslav (oponent)
Výroba fotiek a filmov zachytávajúca nočnú scenériu, ktorá vyzerá prirodzene, je dlhotrvajúci problém od vzniku fotoaparátu. Pre vytvorenie snímku je potrebné mať dostatok svetla, ktoré v senzore fotoaparátu vytvorí merateľnú veličinu. Kvôly tomu, fotenie v noci nebolo možné kým neboli senzory dosť citlivé, avšak aj potom fotky stále nevyzerali realisticky. Filmový priemysel vyriešil tento problém manuálnou korekciou farieb v postprodukcii. Naim- plementovali sme algoritmus z článku publikovaného v SIGGRAPH 2011, ktorý je schopný na spektrálnych obrazoch tento problém vyriešiť konzis- tentne a vierohodne a rozšírili sme ho o techniku použitú z INRIA článku. 1
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Implementation of a tone mapping operator for scotopic viewing conditions
Safko, Martin ; Wilkie, Alexander (vedoucí práce) ; Kratochvíl, Miroslav (oponent)
Výroba fotiek a filmov zachytávajúca nočnú scenériu, ktorá vyzerá prirodzene, je dlhotrvajúci problém od vzniku fotoaparátu. Pre vytvorenie snímku je potrebné mať dostatok svetla, ktoré v senzore fotoaparátu vytvorí merateľnú veličinu. Kvôly tomu, fotenie v noci nebolo možné kým neboli senzory dosť citlivé, avšak aj potom fotky stále nevyzerali realisticky. Filmový priemysel vyriešil tento problém manuálnou korekciou farieb v postprodukcii. Naim- plementovali sme algoritmus z článku publikovaného v SIGGRAPH 2011, ktorý je schopný na spektrálnych obrazoch tento problém vyriešiť konzis- tentne a vierohodne a rozšírili sme ho o techniku použitú z INRIA článku. 1
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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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