Tag: Cameras

Cameras and Display Systems Towards Photorealistic 3D Holography


Free Download Cameras and Display Systems Towards Photorealistic 3D Holography by Jin Li , Jintao Hong , Yi Zhang , Xiaoxun Li , Zilong Liu , Yanyan Liu , Daping Chu
English | PDF EPUB (True) | 2023 | 147 Pages | ISBN : 3031458435 | 47.3 MB
This book presents recent advances in three-dimensional (3D) imaging and display frameworks, encompassing three categories of 3D imaging and display technologies. The first category is nonphotorealistic 3D approaches based on conventional optical cameras to implement 3D stereoscopic observation of a scene. In the context of nonphotorealistic 3D imaging and reconstruction systems, the authors introduce general principles and also demonstrate camera calibration for 3D imaging, smart cameras, and full-link imaging methods using the optical modulation transfer function to improve imaging quality in conventional cameras. The second category is based on light-ray light field technology to achieve photorealistic 3D imaging and displays. In the context of light-ray light field systems, two approaches capable of light-ray light field 3D imaging by utilizing a camera array or a lens array are demonstrated. Accordingly, light-ray light field display approaches comprising head-mounted displays and integral displays are also introduced. The third category is also photorealistic 3D imaging and display technology, which is based on holography (i.e., diffraction or wavefront light field). In the corresponding holographic displays, the authors introduce 3D holographic displays from three elements: algorithms, devices, and systems, involving fast hologram generation algorithms, wide-viewing-angle display systems, and metasurface holography, etc. Including an investigative roadmap for future progress in optical imaging and 3D display systems, this book is essential reading for scientists and engineers in academia and industry who are interested in next-generation imaging and display concepts for 3D visual sensing systems.

(more…)

Cameras at War Photo Gear that Captured 100 Years of Conflict – From Crimea to Korea


Free Download Cameras at War: Photo Gear that Captured 100 Years of Conflict – From Crimea to Korea by John Wade
English | October 5, 2020 | ISBN: 152676010X | 272 pages | PDF | 24 Mb
Books about war and the pictures that came out of conflict usually concentrate on the picture content. But behind every picture there is a camera – and that’s what this book is about. Profusely illustrated throughout with pictures of the cameras, rather than the pictures they took, it looks at 100 years of conflict from the Crimean War to the Korean War. It begins in the days when a photographer needed to be more of a scientist than an artist, such were the difficulties of shooting and processing any photograph. It ends with the cameras whose compact dimensions, versatility and ease of use meant that photographers could largely forget the science and concentrate on the art. Some cameras simply recorded events. Others defined and changed the way those events proceeded. These were the cameras that went to war, and this is their story.

(more…)