English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Image enhancement is an important stage in the image-processing domain. Themost known image enhancement method is the histogram equalization. This methodis an automated one, and realizes a simultaneous modification for brightnessand contrast in the case of monochrome images and for brightness, contrast,saturation and hue in the case of color images. Simple and efficient methodscan be obtained if affine transforms within logarithmic models are used. A veryimportant thing in the affine transform determination for color images is thecoordinate system that is used for color space representation. Thus, the usingof the RGB coordinates leads to a simultaneous modification of luminosity andsaturation. In this paper using the lrgb perceptual coordinates one can defineaffine transforms, which allow a separated modification of luminosity l andsaturation s (saturation being calculated with the component rgb in thechromatic plane). Better results can be obtained if partitions are defined onthe image support and then the pixels are separately processed in each windowbelonging to the defined partition. Classical partitions frequently lead to theappearance of some discontinuities at the boundaries between these windows. Inorder to avoid all these drawbacks the classical partitions may be replaced byfuzzy partitions. Their elements will be fuzzy windows and in each of themthere will be defined an affine transform induced by parameters using the fuzzymean, fuzzy variance and fuzzy saturation computed for the pixels that belongto the analyzed window. The final image is obtained by summing up in a weightway the images of every fuzzy window.

Color Image Enhancement Using the lrgb Coordinates in the Context of Support Fuzzification