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Photo Tourism: Exploring Photo Collections in 3D

(a)(b)(c)Figure1:Oursystemtakesunstructu redcollectionsofphotographssuchasthosefr omonlineimagesearches(a)andreconstructs3 Dpointsandviewpoints(b)toenablenovel waysofbrowsingthephotos(c).AbstractWe presenta systemforinteractivelybrowsingandexplori nglargeunstructuredcollectionsofphotogra phsofa sceneusinga ,whilealsoenablingfull3 Dnavigationandexplorationofthesetofimage sandworldgeometry, easytoconstructphototoursofscenicorhisto riclocations,andtoannotateimagedetails, [InformationInterfacesandPresentation]:M ultimediaInformationSystems Arti cial,augmented, [Arti cialIntelligence]:VisionandSceneUndersta nding ModelingandrecoveryofphysicalattributesK eywords:image-basedrendering,image-based modeling,photobrowsing,structurefrommoti on1 IntroductionA centralgoalofimage-basedrenderingis to evoke a visceralsenseofpresencebasedona collectionofphotographsofa seensigni 's ,digitalphotography, togetherwiththeIn-ternet,have combinedtoenablesharingofphotographsona trulymassive ,a Googleimagesearchon NotreDameCathedral returnsover15,000photos,capturingthescen efrommyriadviewpoints,levelsofdetail,lig htingconditions,sea-sons,decades.

fore adding them to the scene; and using focal length information from image EXIF tags. Schaffalitzky and Zisserman [2002] present another related technique for calibrating unordered image sets, con- ... Our approach therefore uses an approximate plane-based,.)). a )) ...

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Transcription of Photo Tourism: Exploring Photo Collections in 3D

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CONIC SECTIONS - NCERT

ncert.nic.in

Focal distance of a point Let the equation of the parabola be y2 = 4ax and P(x, y) be a point on it. Then the distance of P from the focus (a, 0) is called the focal distance of the point, i.e., FP = ( )x a y− +2 2 = 2 ( ) 4x a ax− + = ( )x a+ 2 = | x + a | 11.1.4 Ellipse An ellipse is the set of points in a plane, the sum of whose distances

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3.1.Image formation by Mirrors and Lenses

courses.physics.ucsd.edu

A virtual image is formed by a plane mirror at a distance q behind the mirror. q = -p. 2 Parabolic Mirrors Parallel rays reflected by a parabolic mirror are focused at a point, called the Focal Point located on the optic axis. Optic Axis Parabolic Reflector Parabolic mirrors can be used to focus incoming parallel rays to a small area

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Human Visual System

eecs.wsu.edu

the focal length. ... • The sampling process may be viewed as partitioning the real xy plane with a grid whose vertices are elements in the Cartesian product Z x Z, where Z is the set of integers. • If ∆x and ∆y are separation of grid points in the x and y directions,

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PHYS 7221 - The Three-Body Problem

www.phys.lsu.edu

Even if the motion was restricted to a plane flxed in space, the order is reduced to 4 which is still unsolvable in general. Figure 1: Position vectors in the CM system and relative position vectors for the three-body problem (Hestenes 1987). ... the focal point of all three orbits. The motion is periodic with the same period for all three ...

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Chapter 4 –Microscopy

light.ece.illinois.edu

focal distance measured from principal plane working distance = distance from F to physical surface of lens Entrance Pupil image of physical aperture f W Entrance Pupil = image of physical apert and entrance pupil determine numerical aperf ture i.e. resolution Chapter 4: Microscopy 10

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Reflection and Refraction

physics.fullerton.edu

focal point, F. The distance from the focal point to the vertex of the mirror is the focal length, f. The relationship between the radius of curvature and the focal length is, R = 2f. For a concave mirror, all of the light rays that run parallel to the principal axis will reflect off of the mirror and converge at the focal point. See Figure 4 ...

  Reflections, Falco, Refraction, Reflection and refraction

The Focal Length of Lenses

physics.weber.edu

Focal length of lenses 3 20 30 10 0 lens d sag (b) L (a) {Figure 1: (a) The top view of a spherometer. (b)Speherometr on a convex lens. The figure shows the definition of L, and sagittal distance dsag. screw at the lens’ center.

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Focal, Plane, Reflection and Refraction