Spectral investigation of the canopy has an increasing importance in precision viticulture to monitor effect biotic and abiotic stress factors. In this study, RGB (color model, red, green, blue)-based vegetation indices were evaluated find a correlation with grapevine leaf chlorophyll concentration. ‘Hárslevelű’ (Vitis vinifera L.) samples obtained from commercial vineyard digitalized. The conc...

This paper compares the Portuguese and Bulgarian consumer price indices (CPI) and attempts to identify some areas in which the CPI compilation methodology could be improved in the two countries. This work is organised into six sections. The first section briefly describes the organisational structure on which the production of the CPI is based in the two countries. The second section focuses on...

A simple, rapid and eco-friendly method has long been needed for evaluating the compost stability because application of unstable compost in agricultural field causes phytotoxicity. Thus, the CIELAB variables L*, a*, b*, a* x b*, a* / b*, 2000a* / (L* x b*), 1000a* / (L* + b*), chroma (C*ab), hue (hab) and color difference (∆E00) in dried (70oC) and ground composting materials (particle size ≤ ...

We observed the flat-spectrum radio quasar 4C 29.45 in BVRI optical bands for 39 nights from February 2022 to July with T60 telescope at TÜBİTAK National Observatory (TUG) Turkey. In this study, we aimed study flux, color, and spectral variability on short timescales. The object was an active (bright) phase average R-band brightness of 14.7 mag variable throughout monitoring period. analyzed fl...

This study we focus on the morphological-based image segmentation problem, based on the watershed pre-segmentation with color-alone feature. Based on the color mathematical morphology (MM) method, the similarity measure of merging process between neighboring pixels and regions can be performed as a ranking problem. To avoid the creation of a false color and false segmentation, a hybrid-ordering...

Edge detection has attracted the attention of many researchers and is one of the most important areas in low level computer vision. In recent years, the focus of edge detection has shifted from grayscale single component images to multicomponent color images that utilize the inter-spectral correlation of the neighboring color samples to eliminate color artifacts and increase the accuracy of edg...

Emerging electronic display technologies for cinema and television such as LED, OLED, laser and quantum dot are permitting greatly enhanced color gamuts via increasingly narrow-band primary emission spectra. A recent standard adopted for Ultra High Definition television, ITU-R Rec. 2020, promotes RGB primary chromaticities coincident with the spectral locus. As displays trend towards larger gam...