Transformations in digital color imaging from RGB to CIELAB are compared between conventional ICC profiles and a newly developed neural network model. The accuracy of the transformations are computed in terms of Delta E and a comparison is made between the ICC profile and a neural network implemented in MATLAB. The transformations are used to characterize and test the color response of an Epson...

The classical definitions of color are well adapted to diffusing objects, whose color is almost independent of the viewing angle, and to very glossy object observed in the specular direction in respect to the light source. For glossy or iridescent objects, the color is difficult to characterize due to its dependence on the viewing direction. In order to cope with such objects and to represent t...

En el presente trabajo se determinaron los parámetros colorimétricos mediante sistema CIELAB y la densidad aparente por densitometría de rayos X en madera Guazuma crinita para obtener información su calidad uso como solida o transformada. La evaluación realizó tres niveles del eje axial (basal, medio apical) una plantación 5 8 años, zona Puerto Inca, departamento Huánuco, Perú. ambas ...

An energy restricted image processing method under power constrained condition is important. In this paper, we analyze bit plane analysis and apply this method to energy efficient image processing method. We investigate number of bit cases and their corresponding object and subjective performance such as CPSNR and S-CIELAB. Experimental results indicate that the presented method can raise energ...

A review of technical papers on the subject of the accuracy of RGB to CIELAB conversion is provided. In general, these papers concentrate on a single limiting factor, the spectral response of the camera. Even with the assumption that all other parts of the system contribute insignificantly to the error, the accuracy reported is still considerably worse than one would like from a color measureme...

The Image Systems Evaluation Toolkit (ISET) is an integrated suite of software routines that simulate the capture and processing of visual scenes. ISET includes a graphical user interface (GUI) for users to control the physical characteristics of the scene and many parameters of the optics, sensor electronics and image processing-pipeline. ISET also includes color tools and metrics based on int...

A common problem in the field of color printing is closed loop color calibration, a process which generally requires a spectrometer. Light Emitting Diodes (LED) sensors are inexpensive and effective for measuring the net reflectance of certain frequencies of light. Sensor measurement of LED reflectance can be used to estimate spectral reflectance or color value (measured in CIELAB or CIEXYZ col...