Developing countries have embarked on the promotion of “ICT access for all” through subsidized Information and Communication Technologies (ICTs), especially in underserviced areas of such countries. The main aim of the “ICT access for all” is to extend the communication services to the large areas of underserviced regions through subsidized communication services. In some instances, subsidies m...

If uniform coding (Gödelization) of potentially infinite sequences of numbers can be performed in PSPACEF, then PSPACE = EXPTIME 6= EXPSPACE = 2-EXPTIME, and, for all p, we have p−EXPSPACE = p+1-EXPTIME; if it can be performed in LINSPACEF, we also have LINSPACE = DTIME(2); the proof fails, when relativized to oracle-TM’s. A by-product of this research is that PTIMEF is not closed under number-...

Predicting a surface color under different lights is an easy task if the surface reflectance function is available. However, often only colorimetric information is available, and the tristimulus values of a color that undergoes an illuminant change are estimated using transforms inspired by the von Kries coefficient rule model. We propose a new method, based on the reconstruction of multispectr...

Many research results indicated that the surround condition of image display could be a very important factor for image appearance. The most significant impact of the surround on image appearance is the change in perceived image contrast. The chromatic perception of the image will also depend on the color of surround. In this research, a psychophysical experiment was carried out to investigate ...

Abstract Quantification of the degradation behaviour heritage objects is essential to manage rate and hence optimise their lifetime. In this research, a 2 3 full factorial experiment was carried out deepen understanding photodegradation historical rag paper induced by continuous polychromatic visible radiation. Oxygen concentration, relative humidity illuminance were investigated as three envir...

With the development of remote sensing technology, simultaneous acquisition 3D point cloud and color information has become constant goal for scientific research commercial applications in this field. However, since radar echo data practice refer to value spectral channel its corresponding energy, it is still impossible obtain accurate tristimulus values through integral calculation after tradi...

BACKGROUND AND OBJECTIVE A cross-polarized diffuse reflectance (CDR) color imaging system was developed for quantitative evaluation of port wine stain (PWS) response to laser therapy. To obtain calibrated Commission International de l'Eclairage (CIE) color space images from RGB (red, green, and blue) images, it was necessary to derive an optimized conversion matrix specific to our imaging syste...

an algorithm is suggested for implementation of unlimited primaries in two-constants kubelka-munk color matching attempt. allens method for tristimulus color matching which was limited to four colorants in two constant theory, dealt with inversable matrices. by application of the pseudo-inverse, it is not necessary to limit the number of primary colors to four as allen suggested. the suggested ...