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Radiometric compensation for procam system based on anchoring theory

Ting-Chun Wang, Tai-Hsiang Huang, Homer H. Chen
2013 2013 IEEE International Conference on Image Processing  
For a procam system consisting of a projector and a camera, the chroma distortion of an image projected on a non-white surface can be compensated by increasing the intensity of the complementary color  ...  of the projection surface.  ...  INTRODUCTION Recently, the projector technology has made significant progress, making possible projections on non-ideal surfaces.  ... 
doi:10.1109/icip.2013.6738022 dblp:conf/icip/WangHC13 fatcat:ounqfrpsffdq5igtqkn6yc2c6u

Radiometric compensation for ubiquitous projection

Tai-Hsiang Huang, Homer Chen
2013 2013 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference  
Integrating a pico-projector with a multimedia device allows a nearby wall, desk, or human body to be conveniently used as the projection surface.  ...  Ubiquitous projection is no longer a fiction, and the miniature of projector brings about a new form of social interaction and augmented reality applications.  ...  Similarly, when an image is projected on a shiny surface, the specular highlight [44] on the surface would affect the color appearance of the image.  ... 
doi:10.1109/apsipa.2013.6694349 dblp:conf/apsipa/HuangC13 fatcat:yrbogzpmlred7ndepagudbupoq

Eggs Defect Detection using Image Processing

Norman Dias, Praise Malewadkar, Sweety Naik, Fedrick Carvalho
2017 International Journal of Engineering Research and  
This project deals with the fertility of the eggs based on image processing and RGB color model.  ...  Till date Image classification is done on objects based on the external appearance.We aim to do the classification on the internal image.  ...  Till date image classification done on objects based on the external appearance. We aim to do the classification on the internal image. A.  ... 
doi:10.17577/ijertv6is070075 fatcat:vzvzu5tzsra2nmmoscagcfeqfa

Non-physical Painting Restoration in Improved Reality [chapter]

Marko Aleksić, Vanja Jovanović
2018 Communications in Computer and Information Science  
The conservation and restoration treatment was successfully carried out on all paintings but one, a painting from his Informal period, entitled "Untitled" (1961).  ...  Can we make a painting look restored without any physical intervention on it?  ...  image Non-physical Painting Restoration in Improved Reality  ... 
doi:10.1007/978-3-030-05819-7_16 fatcat:37et7k3gs5hntbz4kjmfqdgcf4

Dense Stereo Range Sensing with Marching Pseudo-Random Patterns

Danick Desjardins,, Pierre Payeur
2007 Fourth Canadian Conference on Computer and Robot Vision (CRV '07)  
Pseudo-random codes are used to create artificial textures on a scene which are extracted and grouped in a confidence map to ensure reliable feature matching between pairs of images taken from two cameras  ...  Depth estimation is performed on corresponding points with progressive refinement as the pseudo-random pattern projection is marched over the scene to increase the density of matched features, and achieve  ...  As shown in Figure 8 for the case where each color region is 9 pixels wide and 9 pixels high, and where a separation area of 9 black pixels (here depicted in white) is preserved in between color squares  ... 
doi:10.1109/crv.2007.22 dblp:conf/crv/DesjardinsP07 fatcat:kug7zo7mcfe6dlrp3futdvmc3e

Real-time adaptive radiometric compensation

Anselm Grundhöfer, Oliver Bimber
2006 ACM SIGGRAPH 2006 Research posters on - SIGGRAPH '06  
Recent radiometric compensation techniques make it possible to project images onto colored and textured surfaces.  ...  This is realized with projector-camera systems by scanning the projection surface on a per-pixel basis.  ...  The intensities of the input image are scaled depending on the average image luminance and the maximum and minimum color values of the projection surface.  ... 
doi:10.1145/1179622.1179686 dblp:conf/siggraph/GrundhoferB06 fatcat:mpr72w2bujfxxotjhkbypdc5qy

Towards mapping the field of non-photorealistic rendering

Amy A. Gooch
2010 Proceedings of the 8th International Symposium on Non-Photorealistic Animation and Rendering - NPAR 10  
One can think of a photorealistic image as one that preserves a one-to-one mapping, such that parameters such as color, intensity, texture, edges, etc. in a scene are mapped to the same parameters in the  ...  However, as shown in hand made example in the last image, mapping the difference between the two images to a easily distinguishable image feature such as multiple tide lines, color-coded by time of day  ...  Given a color photograph, their technique generates a mapping between colors in the image and black and white screen patterns through multidimensional scaling in order to preserve the tone similarity,  ... 
doi:10.1145/1809939.1809958 dblp:conf/npar/Gooch10 fatcat:i27cuybnjrhpzol22fo7bts47y

Analytical Survey of Highlight Detection in Color and Spectral Images [chapter]

Haris Ahmad Khan, Jean-Baptiste Thomas, Jon Yngve Hardeberg
2017 Lecture Notes in Computer Science  
In this paper, we present a review and analysis of these techniques in color and spectral images.  ...  Applications which require object properties measurement or rendering are affected by specular reflection since the models assume matte diffusing surfaces most of the time.  ...  Pure white illuminant Yes Yes Yes Color ratio among neighbouring pixels is preserved.  ... 
doi:10.1007/978-3-319-56010-6_17 fatcat:o36cisb2xnhntb2eee47w6r3b4

Gamut Mapping for Digital Cinema

Jan Frohlich, Andreas Schilling, Bernd Eberhardt
2014 SMPTE Motion Imaging Journal  
reduces chroma until the gamut boundary is reached (Fig. 3 (b)) ® SCLIP’> (Simple-Clip) projects out-of-gamut colors onto the gamut surface, in the direction of one point.  ...  This success is based on the decisions of the Digital Cinema Initiatives (DCI) and SMPTE DC28 to employ non-main stream image-coding technologies like the DCI-X’Y'Z’ color space One of the primary goals  ... 
doi:10.5594/j18486 fatcat:ovbsdbhcvnaqbpdu6a6bmeihyy

Perceptually Based Appearance Modification for Compliant Appearance Editing

Alvin J. Law, Daniel G. Aliaga, Behzad Sajadi, Aditi Majumder, Zygmunt Pizlo
2011 Computer graphics forum (Print)  
Previous systems typically assume to operate with compliant appearances or restrict themselves to the simpler case of white surfaces.  ...  To achieve a compliant appearance, all points on the physical surface must be altered to the colors of the desired target appearance; otherwise, an incompliant appearance results in a misleading visualization  ...  Instead, the projections appear on standard white or back-projection screens to minimize the chance and impact of incompliancy.  ... 
doi:10.1111/j.1467-8659.2011.02035.x fatcat:gjzmlhvm3bgbtlwai72mzd26ha

Perceptual Global Illumination Cancellation in Complex Projection Environments

Yu Sheng, Barbara Cutler, Chao Chen, Joshua Nasman
2011 Computer graphics forum (Print)  
The unintentional scattering of light between neighboring surfaces in complex projection environments increases the brightness and decreases the contrast, disrupting the appearance of the desired imagery  ...  Results show that our method preserves the color fidelity of the desired imagery significantly better than previous methods.  ...  For the examples in this paper, we transform the appearance of an existing physical geometry with diffuse white or † light grey surfaces into colorful scenes.  ... 
doi:10.1111/j.1467-8659.2011.01985.x fatcat:ojj7xuxbmfd3jexudx4e4gkoby

Color gamut reduction techniques for printing with custom inks

Sylvain M. Chosson, Roger D. Hersch, Reiner Eschbach, Gabriel G. Marcu
2001 Color Imaging: Device-Independent Color, Color Hardcopy, and Applications VII  
Original colors with hues outside the target gamut are projected onto the gray axis or onto desaturated colors.  ...  When the black ink is not available, we map the gray axis G into a colored curve G' connecting in the 3D color space the paper white and the darkest available color formed by the superposition of the 3  ...  The only printable hue is the hue of color C 1 . All input colors are projected onto the "triangular" surface formed with vertices corresponding to White, Black and C 1 (Fig. 1a) .  ... 
doi:10.1117/12.452980 dblp:conf/clrimg/ChossonH02 fatcat:hvrw5dll4bholjsslnlhylcypq

Walk-Through Illustrations: Frame-Coherent Pen-and-Ink Style in a Game Engine

Bert Freudenberg, Maic Masuch, Thomas Strothotte
2001 Computer graphics forum (Print)  
In this paper we show how a game engine designed to generate photorealistic images can be extended to produce non-photorealistic and hybrid renditions.  ...  Acknowledgments The authors wish to thank Niklas Röber for his work on the FLY3D engine and Thomas Fuchs for modeling. Many thanks to Nick Halper for proof reading the manuscript.  ...  Coloring The non-photorealistic image elements presented so far (outlining and hatch-maps/ink-maps) did not make use of color.  ... 
doi:10.1111/1467-8659.00511 fatcat:v6k7czjg3fhsrgoztgw5ac6cqe

Reproducing color images as duotones

Joanna L. Power, Brad S. West, Eric J. Stollnitz, David H. Salesin
1996 Proceedings of the 23rd annual conference on Computer graphics and interactive techniques - SIGGRAPH '96  
We investigate a new approach for reproducing color images.  ...  Rather than mapping the colors in an image onto the gamut of colors that can be printed with cyan, magenta, yellow, and black inks, we choose the set of printing inks for the particular image being reproduced  ...  Figure 5 Figure 6 56 Image colors before and after a non-uniform transformation in the ink-spread direction S.  ... 
doi:10.1145/237170.237261 dblp:conf/siggraph/PowerWSS96 fatcat:ir7epryppbh2jldaurpxzxw3vq

A high-resolution method for the localization of proanthocyanidins in plant tissues

Shamila W Abeynayake, Stephen Panter, Aidyn Mouradov, German Spangenberg
2011 Plant Methods  
Embedding of plant tissues in LR White or paraffin matrices, with or without DMACA staining, preserved the physical integrity of the plant tissues, allowing high-resolution imaging that facilitated cell-specific  ...  A brown coloration was seen in proanthocyanidin-producing cells when plant tissues were embedded without DMACA staining and this was likely to have been due to non-enzymatic oxidation of proanthocyanidins  ...  Highresolution imaging revealed an asymmetric pattern of proanthocyanidin accumulation within the epidermal layer, starting on the abaxial surface and proceeding to the adaxial surface of petals ( Figure  ... 
doi:10.1186/1746-4811-7-13 pmid:21595992 pmcid:PMC3117829 fatcat:pczt5yqmybgobdqz7jncid6xqy
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