The Office Cat Reports onWorld War II in Colour(Channel 5)

2015 ◽  
Vol 35 (2) ◽  
pp. 339-346
Author(s):  
Jerry Kuehl
Keyword(s):  
Author(s):  
Abdallah Al-Tahan Al-Nu’aimi

This article introduces intelligent watermarking scheme to protect Web images from attackers who try to counterfeit the copyright to damage the rightful ownership. Using secret signs and logos that are embedded within the digital images, the technique can investigate technically the ownership claim. Also, the nature of each individual image is taken into consideration which gives more reliable results. The colour channel used was chosen depending on the value of its standard deviation to compromise between robustness and invisibility of the watermarks. Several types of test images, logos, attacks and evaluation metrics were used to examine the performance of the techniques used. Subjective and objective tests were used to check visually and mathematically the solidity and weakness of the used scheme.


Perception ◽  
10.1068/p5165 ◽  
2005 ◽  
Vol 34 (8) ◽  
pp. 921-925 ◽  
Author(s):  
Alexander D Logvinenko ◽  
Sara J Hutchinson

Contrary to the general belief that the yellow-blue mechanism has lower spatial resolution than the red-green mechanism, it has been recently claimed that both mechanisms have similar spatial sensitivity (McKeefry et al, 2001 Vision Research41 245–255). Studying high-spatial-frequency tritanopia (a colour illusion based on spatio-chromatic interactions in human vision), we found strong evidence for the existence of two blue mechanisms—with low and high spatial-frequency resolution. If confirmed, this may resolve the apparent paradox concerning spatial resolution of the yellow-blue mechanism.


2009 ◽  
Vol 26 (1) ◽  
pp. 011202 ◽  
Author(s):  
Bi Zheng ◽  
Pang Hou-Rong ◽  
Ping Jia-Lun

2020 ◽  
Vol 10 (3) ◽  
pp. 1165 ◽  
Author(s):  
Yutaro Iwamoto ◽  
Naoaki Hashimoto ◽  
Yen-Wei Chen

This study proposes real-time haze removal from a single image using normalised pixel-wise dark-channel prior (DCP). DCP assumes that at least one RGB colour channel within most local patches in a haze-free image has a low-intensity value. Since the spatial resolution of the transmission map depends on the patch size and it loses the detailed structure with large patch sizes, original work refines the transmission map using an image-matting technique. However, it requires high computational cost and is not adequate for real-time application. To solve these problems, we use normalised pixel-wise haze estimation without losing the detailed structure of the transmission map. This study also proposes robust atmospheric-light estimation using a coarse-to-fine search strategy and down-sampled haze estimation for acceleration. Experiments with actual and simulated haze images showed that the proposed method achieves real-time results of visually and quantitatively acceptable quality compared with other conventional methods of haze removal.


1998 ◽  
Vol 81 (6) ◽  
pp. 272-279
Author(s):  
Luke E. Mahon ◽  
Algis J. Vingrys ◽  
Suzanne MJ Fleiszig

2021 ◽  
Author(s):  
Ghada Sandoub ◽  
Randa Atta ◽  
Hesham Arafat Ali ◽  
Rabab Farouk Abdel‐Kader

Author(s):  
Sergey V. Murashеv ◽  
Elena A. Gorlach ◽  
Alexander N. Chertov ◽  
Elena V. Gorbunova ◽  
Elena I. Kiprushkina

A crucial technological task that must be solved in the production of sausage products is to stabilize the product’s red colour. In this paper, we propose a scheme to determine the most significant parameters of the quality of dry-cured sausages by their colour characteristics. For this purpose, colour digital images were obtained, which were further processed using two classical colour representation systems: RGB and xyY. We monitored changes in pH and the ratio of water to dry matter in meat products. These crucial sausage properties were changed by introducing chitin-containing supplements into their recipes, which allowed us to solve two tasks simultaneously. The first comprises, as already mentioned, changing the properties of sausages to obtain correlations with colour characteristics. The second is to enrich meat products with chitin complex for preventive purposes to improve people’s nutrition. The construction of correlation dependencies using each coordinate separately in two colour systems showed that each system (RGB and xyY) has one colour channel with a maximum correlation coefficient. This is due to the colour features of sausages, which can be represented to the greatest extent with the help of only one colour coordinate in the considered colour representation systems (RGB and xyY). Using these colour coordinates will allow one to achieve maximum measurement accuracy. Thus, two tasks are being solved: the enrichment of food with dietary supplement and the development of a method to control their content.


ScienceAsia ◽  
2014 ◽  
Vol 40S (1) ◽  
pp. 1 ◽  
Author(s):  
Alaa Ahmed Abbas Al-abayechi ◽  
Xiaoning Guo ◽  
Wooi-Haw Tan ◽  
Hamid A. Jalab

2019 ◽  
Vol 2019 (1) ◽  
pp. 75-79
Author(s):  
Yu Hu ◽  
Ming Ronnier Luo

The goal is to develop a display characterization model to include the personal vision characteristics. A two-step model for visually characterizing displays was developed. It was based on the concept of half-toning technique for obtaining gamma factor for each colour channel, and unique hue concept for achieving 3x3 matrix coefficients, respectively. The variation can be presented by the optimized RGB primaries for each observer. The typical difference between the individual and the measured ground truth is 2.2 in terms of CIEDE2000 units.


2016 ◽  
Author(s):  
I. Md. Dendi Maysanjaya ◽  
Hanung Adi Nugroho ◽  
Noor Akhmad Setiawan ◽  
E. Elsa Herdiana Murhandarwati

Sign in / Sign up

Export Citation Format

Share Document