16 papers · ranked by Valyu relevance
Richard M. Rimiru, Judy Gateri, Micheal W. Kimwele, Yilun Shang
Content-Based Image Retrieval (CBIR) is the cornerstone of today’s image retrieval systems. The most distinctive retrieval approach used, involves the submission of an image-based query whereby the system is used in the extraction of visual characteristics like the shape, color, and texture from the images. Examination…
Mikaela Koutrouli, John H. Morris, Lars J. Jensen
Data visualization is essential to discover patterns and anomalies in large high-dimensional datasets. New dimensionality reduction techniques have thus been developed for visualizing omics data, in particular from single-cell studies. However, jointly showing several types of data, e.g. single-cell expression and gene…
Shawn T. Schwartz, Whitney L.E. Tsai, Elizabeth A. Karan, Mark S. Juhn + 4 more
Advances in digital imaging and software tools have provided increasingly accessible datasets and methods for analyzing color evolution. Despite the variety of computational packages available, most rely on color classification before running analyses. Previous methods to characterize color limit the ability to analyze…
Marco Buzzelli, Mathieu Hébert, Shoji Tominaga, Alain Tremeau
The angle-retaining color space (ARC) and the corresponding chromaticity diagram encode information following a cylindrical color model. Their main property is that angular distances in RGB are mapped into Euclidean distances in the ARC chromatic components, making the color space suitable for data representation in…
Muragul Muratbekova, Nuray Toganas, Ayan Igali, Maksat Shagyrov + 3 more
—Color representation is essential in computer vision and human-computer interaction. There are multiple color models available. The choice of a suitable color model is critical for various applications. This paper presents a review of color models and spaces, analyzing their theoretical foundations, computational…
Javier Martínez Martínez, Xurxo Rigueira, María Araújo, Eduardo Giráldez + 1 more
'Eduardo Giráldez' 'Antonio Recaman'] The traceability of granite blocks consists in identifying each block with a finite number of color bands which represent a numerical code. This code has to be read several times throughout the manufacturing process, but its accuracy is subject to human errors, leading to cause…
Djemel Ziou, Elvis Togban
To display an image, the color space in which the image is encoded is assumed to be known. Unfortunately, this assumption is rarely realistic. In this paper, we propose to identify the color space of a given color image using pixel embedding and the Gaussian process. Five color spaces are supported, namely Adobe RGB…
Ranjan Maitra
Color quantization represents an image using a fraction of its original number of colors while only minimally losing its visual quality. The k-means algorithm is commonly used in this context, but has mostly been applied in the machine-based RGB colorspace composed of the three primary colors. However, some recent…
Han-Lin Li, Shu-Cherng Fang, Bertrand M. T. Lin, Way Kuo
RGB and CYMK are two major coloring schemes currently available for light colors and pigment colors, respectively. Both systems use letter-based color codes that require a large range of values to represent different colors. The problem is that these two systems are hard to use for manipulating any operations involving…
Simon Warchol, Jakob Troidl, Jeremy Muhlich, Robert Krueger + 6 more
Over the past century, multichannel fluorescence imaging has been pivotal in myriad scientific breakthroughs by enabling the spatial visualization of proteins within a biological sample. With the shift to digital methods and visualization software, experts can now flexibly pseudocolor and combine image channels, each…
Stephania Rodríguez Muiña, Rajendra Kumar Reddy Gajjala, Eduardo Fernández Martín, Francisco Javier del Campo
Color Space Transformations for Quantitative Analysis of Electrochemiluminescence Images Using Smartphone Cameras Authors: Stephania Rodríguez Muiña, Rajendra Kumar Reddy Gajjala, Eduardo Fernández Martín, Francisco Javier del Campo Quantitative imaging of luminescent signals, ranging from electrochemiluminescence…
Yasheng Li, Ningfang Liao, Yumei Li, Hongsong Li + 2 more
'Jesper Skottfelt'] The colorimetric conversion of wide-color-gamut cameras plays an important role in the field of wide-color-gamut displays. However, it is rather difficult for us to establish the conversion models with desired approximation accuracy in the case of wide color gamut. In this paper, we propose using an…
Alexander D. Logvinenko, Brian Funt, Pouya Bastani
An algorithm is described that for the first time accurately computes the true object-color solid. Previous methods have computed only approximations to the true object-color solid since they have been based on Schrödinger’s (partially incorrect) assumption that optimal reflectances contain only two transitions. There…
Ethan Chen, Jiwon Chang, Yuhao Zhu
Color programmers manipulate lights, materials, and the resulting colors from light-material interactions. Existing libraries for color programming provide only a thin layer of abstraction around matrix operations. Color programs are, thus, vulnerable to bugs arising from mathematically permissible but physically…
Tajana Koren Ivančević, Nikolina Stanić Loknar, Maja Rudolf, Diana Bratić + 2 more
'Diana Bratić' 'Giuliana Ramella' 'Isabella Torcicollo'] This paper proposes a method for changing pixel shape by converting a CMYK raster image (pixel) to an HSB vector image, replacing the square cells of the CMYK pixels with different vector shapes. The replacement of a pixel by the selected vector shape is done…
Jan Koenderink, Andrea van Doorn, Doris I. Braun, Karl R. Gegenfurtner
A complete empirical characterization of color discrimination in three dimensions has long remained out of reach. Classical studies, beginning with MacAdam’s ellipses, provided local measurements in restricted chromatic planes, but a spatially dense and internally consistent mapping of discrimination structure across…