Shooting Panoramas and Virtual Reality
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Panoramas Shoot with the Camera Positioned Vertically As This Will Give the Photo Merging Software More Wriggle-Room in Merging the Images
P a n o r a m a s What is a Panorama? A panoramic photo covers a larger field of view than a “normal” photograph. In general if the aspect ratio is 2 to 1 or greater then it’s classified as a panoramic photo. This sample is about 3 times wider than tall, an aspect ratio of 3 to 1. What is a Panorama? A panorama is not limited to horizontal shots only. Vertical images are also an option. How is a Panorama Made? Panoramic photos are created by taking a series of overlapping photos and merging them together using software. Why Not Just Crop a Photo? • Making a panorama by cropping deletes a lot of data from the image. • That’s not a problem if you are just going to view it in a small format or at a low resolution. • However, if you want to print the image in a large format the loss of data will limit the size and quality that can be made. Get a Really Wide Angle Lens? • A wide-angle lens still may not be wide enough to capture the whole scene in a single shot. Sometime you just can’t get back far enough. • Photos taken with a wide-angle lens can exhibit undesirable lens distortion. • Lens cost, an auto focus 14mm f/2.8 lens can set you back $1,800 plus. What Lens to Use? • A standard lens works very well for taking panoramic photos. • You get minimal lens distortion, resulting in more realistic panoramic photos. • Choose a lens or focal length on a zoom lens of between 35mm and 80mm. -
Photography and Photomontage in Landscape and Visual Impact Assessment
Photography and Photomontage in Landscape and Visual Impact Assessment Landscape Institute Technical Guidance Note Public ConsuDRAFTltation Draft 2018-06-01 To the recipient of this draft guidance The Landscape Institute is keen to hear the views of LI members and non-members alike. We are happy to receive your comments in any form (eg annotated PDF, email with paragraph references ) via email to [email protected] which will be forwarded to the Chair of the working group. Alternatively, members may make comments on Talking Landscape: Topic “Photography and Photomontage Update”. You may provide any comments you consider would be useful, but may wish to use the following as a guide. 1) Do you expect to be able to use this guidance? If not, why not? 2) Please identify anything you consider to be unclear, or needing further explanation or justification. 3) Please identify anything you disagree with and state why. 4) Could the information be better-organised? If so, how? 5) Are there any important points that should be added? 6) Is there anything in the guidance which is not required? 7) Is there any unnecessary duplication? 8) Any other suggeDRAFTstions? Responses to be returned by 29 June 2018. Incidentally, the ##’s are to aid a final check of cross-references before publication. Contents 1 Introduction Appendices 2 Background Methodology App 01 Site equipment 3 Photography App 02 Camera settings - equipment and approaches needed to capture App 03 Dealing with panoramas suitable images App 04 Technical methodology template -
Chapter 3 (Aberrations)
Chapter 3 Aberrations 3.1 Introduction In Chap. 2 we discussed the image-forming characteristics of optical systems, but we limited our consideration to an infinitesimal thread- like region about the optical axis called the paraxial region. In this chapter we will consider, in general terms, the behavior of lenses with finite apertures and fields of view. It has been pointed out that well- corrected optical systems behave nearly according to the rules of paraxial imagery given in Chap. 2. This is another way of stating that a lens without aberrations forms an image of the size and in the loca- tion given by the equations for the paraxial or first-order region. We shall measure the aberrations by the amount by which rays miss the paraxial image point. It can be seen that aberrations may be determined by calculating the location of the paraxial image of an object point and then tracing a large number of rays (by the exact trigonometrical ray-tracing equa- tions of Chap. 10) to determine the amounts by which the rays depart from the paraxial image point. Stated this baldly, the mathematical determination of the aberrations of a lens which covered any reason- able field at a real aperture would seem a formidable task, involving an almost infinite amount of labor. However, by classifying the various types of image faults and by understanding the behavior of each type, the work of determining the aberrations of a lens system can be sim- plified greatly, since only a few rays need be traced to evaluate each aberration; thus the problem assumes more manageable proportions. -
PANORAMA the Murphy Windmillthe Murphy Etration Restor See Pages 7-9 Pages See
SAN FRANCISCO HISTORICAL SOCIETY NEWSLETTER PANORAMA April-June, 2020 Vol. 32, No. 2 Inside This Issue The Murphy Windmill Restor ation Photo Ron by Henggeler Bret Harte’s Gold Rush See page 3 WPA Murals See page 3 1918 Flu Pandemic See page 11 See pages 7-9 SAN FRANCISCO HISTORICAL SOCIETY NEWSLETTER Message from the President COVID-19 debarks from the tongue less trippingly than worked, and what didn’t? On page 11 of mellifluous Spanish Flu, the misnomer for the pandemic that this issue of Panorama, Lorri Ungaretti ravaged the world and San Francisco 102 years ago. But as we’ve gives a summary of how we dealt with read, COVID-19’s arrival here is much like the Spanish flu. the 1918 Spanish flu pandemic. COVID-19 too resembles another pandemic, black death, or The San Francisco Historical bubonic plague. Those words conjure the medieval world. Or Society seeks to tell our history, our 17th-century London, where an outbreak killed almost 25% of story (the words have the same root) in the city’s population between 1665 and 1666. At the turn of ways that engage us, entertain us even. the 20th century, twenty years before arrival of the Spanish flu, At the same time we tell our story to the bubonic plague found its way to the United States and San make each of us, as the Romans would Francisco. Here, politicians and power brokers, concerned more say, a better civis, or citizen, and our John Briscoe about commerce than public health, tried to pass off evidence of city, as the Greeks would put it, a President, Board of greater polis, or body of citizens. -
Hardware and Software for Panoramic Photography
ROVANIEMI UNIVERSITY OF APPLIED SCIENCES SCHOOL OF TECHNOLOGY Degree Programme in Information Technology Thesis HARDWARE AND SOFTWARE FOR PANORAMIC PHOTOGRAPHY Julia Benzar 2012 Supervisor: Veikko Keränen Approved _______2012__________ The thesis can be borrowed. School of Technology Abstract of Thesis Degree Programme in Information Technology _____________________________________________________________ Author Julia Benzar Year 2012 Subject of thesis Hardware and Software for Panoramic Photography Number of pages 48 In this thesis, panoramic photography was chosen as the topic of study. The primary goal of the investigation was to understand the phenomenon of pa- noramic photography and the secondary goal was to establish guidelines for its workflow. The aim was to reveal what hardware and what software is re- quired for panoramic photographs. The methodology was to explore the existing material on the topics of hard- ware and software that is implemented for producing panoramic images. La- ter, the best available hardware and different software was chosen to take the images and to test the process of stitching the images together. The ex- periment material was the result of the practical work, such the overall pro- cess and experience, gained from the process, the practical usage of hard- ware and software, as well as the images taken for stitching panorama. The main research material was the final result of stitching panoramas. The main results of the practical project work were conclusion statements of what is the best hardware and software among the options tested. The re- sults of the work can also suggest a workflow for creating panoramic images using the described hardware and software. The choice of hardware and software was limited, so there is place for further experiments. -
Capture4vr: from VR Photography to VR Video
Capture4VR: From VR Photography to VR Video Christian Richardt Peter Hedman Ryan S. Overbeck University of Bath University College London Google LLC [email protected] [email protected] [email protected] Brian Cabral Robert Konrad Steve Sullivan Facebook Stanford University Microsoft [email protected] [email protected] [email protected] ABSTRACT from VR photography to VR video that began more than a century Virtual reality (VR) enables the display of dynamic visual content ago but which has accelerated tremendously in the last five years. with unparalleled realism and immersion. However, VR is also We discuss both commercial state-of-the-art systems by Facebook, still a relatively young medium that requires new ways to author Google and Microsoft, as well as the latest research techniques and content, particularly for visual content that is captured from the real prototypes. Course materials will be made available on our course world. This course, therefore, provides a comprehensive overview website https://richardt.name/Capture4VR. of the latest progress in bringing photographs and video into VR. ACM Reference Format: Ultimately, the techniques, approaches and systems we discuss aim Christian Richardt, Peter Hedman, Ryan S. Overbeck, Brian Cabral, Robert to faithfully capture the visual appearance and dynamics of the Konrad, and Steve Sullivan. 2019. Capture4VR: From VR Photography to real world, and to bring it into virtual reality to create unparalleled VR Video. In Proceedings of SIGGRAPH 2019 Courses. ACM, New York, NY, realism and immersion by providing freedom of head motion and USA,2 pages. https://doi.org/10.1145/3305366.3328028 motion parallax, which is a vital depth cue for the human visual system. -
Creating a Realistic VR Experience Using a Normal 360-Degree Camera 14 December 2020, by Vicky Just
Creating a realistic VR experience using a normal 360-degree camera 14 December 2020, by Vicky Just Dr. Christian Richardt and his team at CAMERA, the University of Bath's motion capture research center, have created a new type of 360° VR photography accessible to amateur photographers called OmniPhotos. This is a fast, easy and robust system that recreates high quality motion parallax, so that as the VR user moves their head, the objects in the foreground move faster than the background. This mimics how your eyes view the real world, OmniPhotos takes 360 degree video footage taken with creating a more immersive experience. a rotating selfie stick to create a VR experience that includes motion parallax. Credit: Christian Richardt, OmniPhotos can be captured quickly and easily University of Bath using a commercially available 360° video camera on a rotating selfie stick. Using a 360° video camera also unlocks a Scientists at the University of Bath have developed significantly larger range of head motions. a quick and easy approach for capturing 360° VR photography without using expensive specialist OmniPhotos are built on an image-based cameras. The system uses a commercially representation, with optical flow and scene adaptive available 360° camera on a rotating selfie stick to geometry reconstruction, which is tailored for real capture video footage and create an immersive VR time 360° VR rendering. experience. Dr. Richardt and his team presented the new Virtual reality headsets are becoming increasingly system at the international SIGGRAPH Asia popular for gaming, and with the global pandemic conference on Sunday 13th December 2020. -
Panorama Photography by Andrew Mcdonald
Panorama Photography by Andrew McDonald Crater Lake - Andrew McDonald (10520 x 3736 - 39.3MP) What is a Panorama? A panorama is any wide-angle view or representation of a physical space, whether in painting, drawing, photography, film/video, or a three-dimensional model. Downtown Kansas City, MO – Andrew McDonald (16614 x 4195 - 69.6MP) How do I make a panorama? Cropping of normal image (4256 x 2832 - 12.0MP) Union Pacific 3985-Andrew McDonald (4256 x 1583 - 6.7MP) • Some Cameras have had this built in • APS Cameras had a setting that would indicate to the printer that the image should be printed as a panorama and would mask the screen off. Some 35mm P&S cameras would show a mask to help with composition. • Advantages • No special equipment or technique required • Best (only?) option for scenes with lots of movement • Disadvantages • Reduction in resolution since you are cutting away portions of the image • Depending on resolution may only be adequate for web or smaller prints How do I make a panorama? Multiple Image Stitching + + = • Digital cameras do this automatically or assist Snake River Overlook – Andrew McDonald (7086 x 2833 - 20.0MP) • Some newer cameras do this by “sweeping the camera” across the scene while holding the shutter button. Images are stitched in-camera. • Other cameras show the left or right edge of prior image to help with composition of next image. Stitching may be done in-camera or multiple images are created. • Advantages • Resolution can be very high by using telephoto lenses to take smaller slices of the scene -
A Stitching Algorithm for Automated Surface Inspection of Rotationally Symmetric Components
A Stitching Algorithm for Automated Surface Inspection of Rotationally Symmetric Components Tobias Schlagenhauf1, Tim Brander1, Jürgen Fleischer1 1Karlsruhe Institute of Technology (KIT) wbk-Institute of Production Science Kaiserstraße 12, 76131 Karlsruhe, Germany Abstract This paper provides a novel approach to stitching surface images of rotationally symmetric parts. It presents a process pipeline that uses a feature-based stitching approach to create a distortion-free and true-to-life image from a video file. The developed process thus enables, for example, condition monitoring without having to view many individual images. For validation purposes, this will be demonstrated in the paper using the concrete example of a worn ball screw drive spindle. The developed algorithm aims at reproducing the functional principle of a line scan camera system, whereby the physical measuring systems are replaced by a feature-based approach. For evaluation of the stitching algorithms, metrics are used, some of which have only been developed in this work or have been supplemented by test procedures already in use. The applicability of the developed algorithm is not only limited to machine tool spindles. Instead, the developed method allows a general approach to the surface inspection of various rotationally symmetric components and can therefore be used in a variety of industrial applications. Deep-learning-based detection Algorithms can easily be implemented to generate a complete pipeline for failure detection and condition monitoring on rotationally symmetric parts. Keywords Image Stitching, Video Stitching, Condition Monitoring, Rotationally Symmetric Components 1. Introduction The remainder of the paper is structured as follows. Section 2 reviews the current state of the art in the field of stitching. -
Ground-Based Photographic Monitoring
United States Department of Agriculture Ground-Based Forest Service Pacific Northwest Research Station Photographic General Technical Report PNW-GTR-503 Monitoring May 2001 Frederick C. Hall Author Frederick C. Hall is senior plant ecologist, U.S. Department of Agriculture, Forest Service, Pacific Northwest Region, Natural Resources, P.O. Box 3623, Portland, Oregon 97208-3623. Paper prepared in cooperation with the Pacific Northwest Region. Abstract Hall, Frederick C. 2001 Ground-based photographic monitoring. Gen. Tech. Rep. PNW-GTR-503. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 340 p. Land management professionals (foresters, wildlife biologists, range managers, and land managers such as ranchers and forest land owners) often have need to evaluate their management activities. Photographic monitoring is a fast, simple, and effective way to determine if changes made to an area have been successful. Ground-based photo monitoring means using photographs taken at a specific site to monitor conditions or change. It may be divided into two systems: (1) comparison photos, whereby a photograph is used to compare a known condition with field conditions to estimate some parameter of the field condition; and (2) repeat photo- graphs, whereby several pictures are taken of the same tract of ground over time to detect change. Comparison systems deal with fuel loading, herbage utilization, and public reaction to scenery. Repeat photography is discussed in relation to land- scape, remote, and site-specific systems. Critical attributes of repeat photography are (1) maps to find the sampling location and of the photo monitoring layout; (2) documentation of the monitoring system to include purpose, camera and film, w e a t h e r, season, sampling technique, and equipment; and (3) precise replication of photographs. -
Capture, Reconstruction, and Representation of the Visual Real World for Virtual Reality
Capture, Reconstruction, and Representation of the Visual Real World for Virtual Reality Christian Richardt1[0000−0001−6716−9845], James Tompkin2[0000−0003−2218−2899], and Gordon Wetzstein3[0000−0002−9243−6885] 1 University of Bath [email protected] https://richardt.name/ 2 Brown University james [email protected] http://jamestompkin.com/ 3 Stanford University [email protected] http://www.computationalimaging.org/ Abstract. We provide an overview of the concerns, current practice, and limita- tions for capturing, reconstructing, and representing the real world visually within virtual reality. Given that our goals are to capture, transmit, and depict com- plex real-world phenomena to humans, these challenges cover the opto-electro- mechancial, computational, informational, and perceptual fields. Practically pro- ducing a system for real-world VR capture requires navigating a complex design space and pushing the state of the art in each of these areas. As such, we outline several promising directions for future work to improve the quality and flexibility of real-world VR capture systems. Keywords: Cameras · Reconstruction · Representation · Image-Based Rendering · Novel-view synthesis · Virtual reality 1 Introduction One of the high-level goals of virtual reality is to reproduce how the real world looks in a way which is indistinguishable from reality. Achieving this arguably-quixotic goal requires us to solve significant problems across capture, reconstruction, and represen- tation, and raises many questions: “Which camera system should we use to sample enough of the environment for our application?”; “How should we model the world and which algorithm should we use to recover these models?”; “How should we store the data for easy compression and transmission?”, and “How can we achieve simple and high-quality rendering for human viewing?”. -
Megaplus Conversion Lenses for Digital Cameras
Section2 PHOTO - VIDEO - PRO AUDIO Accessories LCD Accessories .......................244-245 Batteries.....................................246-249 Camera Brackets ......................250-253 Flashes........................................253-259 Accessory Lenses .....................260-265 VR Tools.....................................266-271 Digital Media & Peripherals ..272-279 Portable Media Storage ..........280-285 Digital Picture Frames....................286 Imaging Systems ..............................287 Tripods and Heads ..................288-301 Camera Cases............................302-321 Underwater Equipment ..........322-327 PHOTOGRAPHIC SOLUTIONS DIGITAL CAMERA CLEANING PRODUCTS Sensor Swab — Digital Imaging Chip Cleaner HAKUBA Sensor Swabs are designed for cleaning the CLEANING PRODUCTS imaging sensor (CMOS or CCD) on SLR digital cameras and other delicate or hard to reach optical and imaging sur- faces. Clean room manufactured KMC-05 and sealed, these swabs are the ultimate Lens Cleaning Kit in purity. Recommended by Kodak and Fuji (when Includes: Lens tissue (30 used with Eclipse Lens Cleaner) for cleaning the DSC Pro 14n pcs.), Cleaning Solution 30 cc and FinePix S1/S2 Pro. #HALCK .........................3.95 Sensor Swabs for Digital SLR Cameras: 12-Pack (PHSS12) ........45.95 KA-11 Lens Cleaning Set Includes a Blower Brush,Cleaning Solution 30cc, Lens ECLIPSE Tissue Cleaning Cloth. CAMERA ACCESSORIES #HALCS ...................................................................................4.95 ECLIPSE lens cleaner is the highest purity lens cleaner available. It dries as quickly as it can LCDCK-BL Digital Cleaning Kit be applied leaving absolutely no residue. For cleaing LCD screens and other optical surfaces. ECLIPSE is the recommended optical glass Includes dual function cleaning tool that has a lens brush on one side and a cleaning chamois on the other, cleaner for THK USA, the US distributor for cleaning solution and five replacement chamois with one 244 Hoya filters and Tokina lenses.