12 papers · ranked by Valyu relevance
Jarek Duda
Barcodes like QR Codes have made that encoded messages have entered our everyday life, what suggests to attach them a second layer of information: directly available to human receiver for informational or marketing purposes. We will discuss a general problem of using codes with chosen statistical constrains, for…
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…
Tiberiu Teşileanu, Mary M. Conte, John J. Briguglio, Ann M. Hermundstad + 2 more
Previously, in [1], we showed that when sampling is limiting, the efficient coding principle leads to a “variance is salience” hypothesis, and that this hypothesis accounts for visual sensitivity to binary image statistics. Here, using extensive new psychophysical data and image analysis, we show that this hypothesis…
Fan Zhang, Hengjun Zhu, Kan Bian, Pengcheng Liu + 1 more
Single-track Gray codes (STGCs) is a type of absolute position coding method for novel angular sensors, because it has single-track property over traditional Gray codes and mono-difference over linear feedback shift register codes. However, given that the coding theory of STGCs is incomplete, STGC construction is still…
Liming Geng, Guohua Cao, Chunmin Shang, Hongchang Ding + 3 more
'Jize Yan' 'Yifei Yu'] With the application of encoders in artificial intelligence and aerospace, the demand for the miniaturization and high measurement accuracy of encoders is increasing. To solve this problem, a new absolute matrix encoder is proposed in this paper, which can realize 19-bit matrix coding by…
Sandro Barone, Alessandro Paoli, Armando Viviano Razionale
Coded Structured Light techniques represent one of the most attractive research areas within the field of optical metrology. The coding procedures are typically based on projecting either a single pattern or a temporal sequence of patterns to provide 3D surface data. In this context, multi-slit or stripe colored…
Diego Frı́as
In this article the conversion of color RGB images to grayscale is covered by characterizing the mathematical/algorithmic operators used to project 3 color channels to a single one. Based on the fact that most operators assign each of the 2563 colors a single gray level, ranging from 0 to 255, they are clustering…
Prasoon Ambalathankandy, Yafei Ou, Sae Kaneko, Masayuki Ikebe
Grayscale Mapping Authors: ['Prasoon Ambalathankandy' 'Yafei Ou' 'Sae Kaneko' 'Masayuki Ikebe'] Grayscale images are essential in image processing and computer vision tasks. They effectively emphasize luminance and contrast, highlighting important visual features, while also being easily compatible with other…
Sara Ignacio-Cerrato, David Pacios, José Miguel Ezquerro Rodriguez, José Luis Vázquez-Poletti + 4 more
'José Luis Vázquez-Poletti' 'Nikolaos Schetakis' 'Konstantinos Stavrakakis' 'Alessio Di Iorio' 'María Estefanía Avilés Mariño'] This paper introduces a novel approach for encoding information in PDF documents or similar files. The proposed encoding involves a dual-step method: firstly, the information is encoded in…
Jon Sneyers, Alakuijala, Jyrki, Luca Versari + 9 more
JPEG XL is a new image coding system offering state-of-the-art compression performance, lossless JPEG recompression, and advanced features. It aims to replace JPEG, PNG, GIF, and other formats with a single universal codec. This article provides an overview of JPEG XL, including its history, design rationale, coding…
Lee Prangnell, Víctor Sánchez
In perceptual image coding applications, the main objective is to decrease, as much as possible, Bits Per Pixel (BPP) while avoiding noticeable distortions in the reconstructed image. In this paper, we propose a novel perceptual image coding technique, named Perceptual Color Compression (PCC). PCC is based on a novel…
Jolyon Troscianko, Daniel Osorio
An object’s colour, brightness and pattern are all influenced by its surroundings, and a number of visual phenomena and “illusions” have been discovered that highlight these often dramatic effects. Explanations for these phenomena range from low-level neural mechanisms to high-level processes that incorporate…