Light Field Coding based on Flexible View Ordering for Unfocused Plenoptic Camera Images
نویسنده
چکیده
Plenoptic cameras are devices designed for sampling the light field entering their main lens. The raw information captured by the sensor can then be processed for rendering views at different focal distance or from different perspective. A plenoptic camera generates images with high resolution and high redundant information if compared with a conventional camera having resolution equal to that of a light field rendered view. A light field compression architecture designed for coding views obtained from unfocused plenoptic images is proposed in this paper. The intent of this proposal is to provide a lossy compression tool enabling access to group of light field views. The experimental analysis aims at exploring the performance of the proposed method. The obtained results show that the proposed flexible ordering approach can provide advanced control to the user device in selecting the set of views that are effectively required for a given rendering application.
منابع مشابه
Compression scheme for sparsely sampled light field data based on pseudo multi-view sequences
With the advent of light field acquisition technologies, the captured information of the scene is enriched by having both angular and spatial information. The captured information provides additional capabilities in the post processing stage, e.g. refocusing, 3D scene reconstruction, synthetic aperture etc. Light field capturing devices are classified in two categories. In the first category, a...
متن کاملMulti-view Image Restoration from Plenoptic Raw Images
We present a reconstruction algorithm that can restore the captured 4D light field from a portable plenoptic camera without the need for calibration images. An efficient and robust estimator is proposed to accurately detect the centers of microlens images. Based on that estimator, parameters that model the centers of microlens array images are obtained by solving a global optimization problem. ...
متن کاملLight field panorama by a plenoptic camera
Consumer-grade plenoptic camera Lytro draws a lot of interest from both academic and industrial world. However its low resolution in both spatial and angular domain prevents it from being used for fine and detailed light field acquisition. This paper proposes to use a plenoptic camera as an image scanner and perform light field stitching to increase the size of the acquired light field data. We...
متن کاملDepth estimation and camera calibration of a focused plenoptic camera for visual odometry
This paper presents new and improved methods of depth estimation and camera calibration for visual odometry with a focused plenoptic camera. For depth estimation we adapt an algorithm previously used in structure-from-motion approaches to work with images of a focused plenoptic camera. In the raw image of a plenoptic camera, scene patches are recorded in several micro-images under slightly diff...
متن کاملSpherical Light Fields
A full view spherical camera exploits its extended field of view to map the complete environment onto a 2D image plane. Thus, with a single shot, it delivers a lot more information about the surroundings than one can gather with a normal perspective or plenoptic camera, which are commonly used in light field imaging. However, in contrast to a light field camera, a spherical camera does not capt...
متن کامل