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Error-Tolerant Color Rendering for Digital Cameras

Simone Bianco, Raimondo Schettini
2014 Journal of Mathematical Imaging and Vision  
In digital cameras a color processing pipeline is implemented to convert the RAW image acquired by the camera sensor into a faithful representation of the original scene.  ...  In this work we design extended color correction pipelines which exploit the crosstalks between their modules to lead to a higher color rendition accuracy.  ...  In this work we design and test extended color correction pipelines for digital cameras able to obtain a higher color rendering accuracy.  ... 
doi:10.1007/s10851-014-0496-1 fatcat:sppypg7mz5gapiqmitd2c5de5q

Adversarial Texture Optimization From RGB-D Scans

Jingwei Huang, Justus Thies, Angela Dai, Abhijit Kundu, Chiyu Jiang, Leonidas J. Guibas, Matthias NieBner, Thomas Funkhouser
2020 2020 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)  
Unlike traditional methods which optimize for a parametric color map to reduce misalignment error (Zhou and Koltun [36] ), we learn a misalignment-tolerant discriminator, producing sharper textures.  ...  Although the performance drops for all methods with the increase of camera/geometry errors, our approach maintains the best perceptual quality as the errors increase.  ... 
doi:10.1109/cvpr42600.2020.00163 dblp:conf/cvpr/HuangTDKJGNF20 fatcat:xkq7u6shuvfcfngyuluiuhrn5a

Adversarial Texture Optimization from RGB-D Scans [article]

Jingwei Huang, Justus Thies, Angela Dai, Abhijit Kundu, Chiyu Max Jiang, Leonidas Guibas, Matthias Nießner, Thomas Funkhouser
2020 arXiv   pre-print
In this work, we present a novel approach for color texture generation using a conditional adversarial loss obtained from weakly-supervised views.  ...  Realistic color texture generation is an important step in RGB-D surface reconstruction, but remains challenging in practice due to inaccuracies in reconstructed geometry, misaligned camera poses, and  ...  Unlike traditional methods which optimize for a parametric color map to reduce misalignment error (Zhou and Koltun [36] ), we learn a misalignment-tolerant discriminator, producing sharper textures.  ... 
arXiv:2003.08400v1 fatcat:hchwjgazmncbbjmqmx53iwp7qm

Optimum color filters for CCD digital cameras

Kai Engelhardt, Peter Seitz
1993 Applied Optics  
The theoretical findings of this work were employed for the design and fabrication of a high-resolution digital CCD color camera with high calorimetric accuracy.  ...  A procedure for the definition of optimum spectral transmission curves for any solid-state (especially silicon-based CCD) color camera is presented.  ...  Raynor for designing and building the hardware that was needed to take the measurements for characterizing and optimizing the MASCOT camera. In addition, we thank M. T.  ... 
doi:10.1364/ao.32.003015 pmid:20829908 fatcat:crl6gt6g65crjnbs2tlsrsjgkq

Simplification of objects rendered by polygonal approximations

Michael J. DeHaemer, Michael J. Zyda
1991 Computers & graphics  
The use of a three-dimensional digitizing camera to obtain data from scale models can be used for this purpose. Such data provides an accurate depiction of objects used in the simulators [Ref. 2].  ...  Three-dimensional digitizing cameras can be used to obtain sampled data that maps the surface of three dimensional figures and models.  ...  THREE-DIMENSIONAL DIGITIZER Cyberware Laboratories of Monterey, California produces a 3D digitizing camera that was used for data collection.  ... 
doi:10.1016/0097-8493(91)90071-o fatcat:qaqbs64jsjh37ofq4con2xe5ny

Comparative analysis of color architectures for image sensors

Peter B. Catrysse, Brian A. Wandell, Abbas El Gamal, Nitin Sampat, Thomas Yeh
1999 Sensors, Cameras, and Applications for Digital Photography  
We compare three color architectures for digital cameras: (a) a sensor array containing three interleaved color mosaics, (b) an architecture using dichroic prisms to create three spatially separated copies  ...  We have developed a software simulator to create physical models of a scene, compute camera responses, render the camera images and to measure the perceptual color errors (CIELAB) between the scene and  ...  ACKNOWLEDGMENTS This work was supported by the Programmable Digital Camera project at Stanford University (http://smartcamera.stanford.edulpdc.html).  ... 
doi:10.1117/12.342860 fatcat:amu6k7wl3nbg3gztznyl5dppha

What is the Truth: A Survey of Video Compositing Techniques

Mahmoud Afifi, Khaled F. Hussain
2015 International Journal of Image Graphics and Signal Processing  
Many techniques are used for achieving high realistic results of video compositing.  ...  In this paper, a survey of video compositing techniques, a comparison among compositing techniques, and many examples for video compositing using existing techniques are presented.  ...  Afifi, Amr Hassan, and Ahmed Hosny for their cooperation for capturing the videos and images that were used in the experimental results, and Mohammed Ashour for recording some of the experimental results  ... 
doi:10.5815/ijigsp.2015.08.02 fatcat:c5pndhbbnfdclkqwluqcioqcli

Invertible Image Signal Processing [article]

Yazhou Xing, Zian Qian, Qifeng Chen
2021 arXiv   pre-print
Unprocessed RAW data is a highly valuable image format for image editing and computer vision.  ...  To bridge this gap, we design an Invertible Image Signal Processing (InvISP) pipeline, which not only enables rendering visually appealing sRGB images but also allows recovering nearly perfect RAW data  ...  [7] use the prior information of the cameras (e.g., color correction matrices and digital gains) to reverse the ISP stepby-step.  ... 
arXiv:2103.15061v2 fatcat:eomlgghykjb5titzn73jpmzvz4

High-resolution, real-time three-dimensional shape measurement

Peisen S. Huang
2006 Optical Engineering: The Journal of SPIE  
A color CCD camera is also used to capture images for texture mapping.  ...  It utilizes a single-chip digital light processing projector to project computer-generated fringe patterns onto the object, and a high-speed CCD camera synchronized with the projector to acquire the fringe  ...  Since the ratio error is a systematic error, it can be compensated for by using a lookup table ͑LUT͒ method. In this research, an 8-bit camera is used.  ... 
doi:10.1117/1.2402128 fatcat:4xy37kicxbazhazbgsol6gd5fa

A rapid and cost-effective pipeline for digitization of museum specimens with 3D photogrammetry

Joshua J. Medina, James M. Maley, Siddharth Sannapareddy, Noah N. Medina, Cyril M. Gilman, John E. McCormack, Laura Beatriz Porro
2020 PLoS ONE  
Therefore, a key goal in specimen digitization is developing methods that both increase access and allow for the highest yield of phenomic data. 3D digitization is increasingly popular because it has the  ...  Natural history collections are yielding more information as digitization brings specimen data to researchers, connects specimens across museums, and as new technologies allow for more large-scale data  ...  Acknowledgments We thank Chris Gilman, Jacob Sargeant, and David Dellinger of Occidental College's Library/ Center for Digital Liberal Arts for help and encouragement.  ... 
doi:10.1371/journal.pone.0236417 pmid:32790700 fatcat:nqfirfia6vg6pdu5h3ap36w2t4

High dynamic range head mounted display based on dual-layer spatial modulation

Miaomiao Xu, Hong Hua
2017 Optics Express  
In this paper, we present the integrated work of the design, implementation, calibration, and image-rendering algorithm of a high dynamic range HMD system.  ...  Increasing the dynamic range of HMDs becomes critical especially for augmented reality applications where the dynamic range of outdoor scenes can be as large as 14 orders of magnitude.  ...  pixel on the other SLM during the HDR image rendering process, to digitally correct alignment errors.  ... 
doi:10.1364/oe.25.023320 pmid:29041633 fatcat:hvg7hiauz5du3nvbkftkyb6ire

High Resolution Acquisition of Detailed Surfaces with Lens-Shifted Structured Light [article]

Martin Ritz, Manuel Scholz, Michael Goesele, Andre Stork
2010 VAST: International Symposium on Virtual Reality  
Firstly, our acquisition setup can reconstruct finest details of small Cultural Heritage objects such as antique coins and thus digitally preserve them in appropriate precision.  ...  path, the projected pattern is shifted in fine steps at sub-pixel scale with a granularity of down to 2048 steps per projected pixel, which opens up novel possibilities in depth accuracy and smoothness for  ...  Its image sensor consists of periodical groups of 2x2 color sensors, 2 for green color, and one for red and blue, respectively.  ... 
doi:10.2312/vast/vast10/001-008 fatcat:67ugoh3pj5bmvfel4wyz7ebxju

High resolution acquisition of detailed surfaces with lens-shifted structured light

M. Ritz, F. Langguth, M. Scholz, M. Goesele, A. Stork
2012 Computers & graphics  
First, our acquisition setup can reconstruct finest details of small cultural heritage objects such as antique coins and thus digitally preserve them in appropriate precision.  ...  Second, our accurate height fields are a viable input to physically based rendering in combination with measured material BRDFs to reproduce compelling spatially varying, material-specific effects.  ...  Rather than using the data postprocessed by the camera, which interpolates the color values for each of the four positions in the groups, we directly read out raw data from the camera and form a per-color  ... 
doi:10.1016/j.cag.2011.10.004 fatcat:kdlhfkko6zhynnm3dujth3fzla

A system for the acquisition of reproducible digital skin lesions images

Ilias Maglogiannis, Dimitrios I. Kosmopoulos
2003 Technology and Health Care  
for color constancy, Internal camera Parameters adjustment and Pose extraction for stereo vision, Shading correction and Noise Filtering for color quality.  ...  For each case the average values of the three color planes RGB and their standard deviations were calculated; the measured error differences ranged between 0.7 and 12.9 (in the 0-255 scale).  ...  To optimize color rendering ability, lamp temperature should be at least within the 2900-3300 Kelvin range, with a Color Rendering Index (degree of ability to produce light output optimal for true color  ... 
doi:10.3233/thc-2003-11604 fatcat:n3ij3pzhy5fxbknpj3kfdrdroi

A Photogrammetry-Based Workflow for the Accurate 3D Construction and Visualization of Museums Assets

Fabrizio Ivan Apollonio, Filippo Fantini, Simone Garagnani, Marco Gaiani
2021 Remote Sensing  
Nowadays digital replicas of artefacts belonging to the Cultural Heritage (CH) are one of the most promising innovations for museums exhibitions, since they foster new forms of interaction with collections  ...  However, practical digitization is still a complex task dedicated to specialized operators.  ...  The most common set of additional parameters employed to compensate for systematic errors in digital cameras is the 8-term 'physical' model originally formulated by Brown [104] .  ... 
doi:10.3390/rs13030486 fatcat:we2qqvtaorebng2ok2gl5r5nbq
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